Contra
over 2 years ago
anywhere in the worldcontractfront-end programming
Contra is looking for a talented front-end developer to build a couple marketing landing pages, including a redesigned contra.com homepage! These pages will be key conversion points to bring both Independents and Clients to Contra.
While this is a one-off project to build and launch a couple marketing landing pages, there is opportunity for expanded scope based on success in this first project.
This will require experience coding with React and you will be coordinating directly with Contra engineers throughout this project.
$180.5k – $227.85kaiengineersoftware engineer
Pulumi is hiring a remote Principal Software Engineer - AI. This is a full-time position that can be done remotely anywhere in the United States.
Pulumi - Modern infrastructure as code.
engineerproductremote remote-first
vidIQ is hiring a remote Associate Product Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
vidIQ - Chrome extension for YouTube video creators.
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(ca)aideveloper relationsengineerfull-time
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$212kbackend engineerengineersoftware engineersql
RevenueCat is hiring a remote Senior Backend Engineer, Web. This is a full-time position that can be done remotely anywhere in Americas or EMEA.
RevenueCat - The better way to build and manage subscription apps.
full-timemelbourneproject managementremote
Zero Hash is looking to hire a Technical Project Manager to join their team. This is a full-time position that is remote or can be based in Melbourne.
apidynamodbengineerfront endgraphql
At LaunchBrightly, we are on a mission to automate a process that continually captures and enhances screenshots of all your SaaS product features. The continuous integration and continuous deployment (CI/CD) pipeline and process that engineers adopted over the last decade, is what we ultimately want to build for customer support teams. TLDR; LaunchBrightly = Github Actions/Circle CI for customer support. And we are currently looking to bring onboard a strong Application Engineer.
Everyone at LaunchBrightly is a creator, an owner, or perhaps better, a celebration of the crazy ones. The misfits. The rebels. Most big companies are afraid of entrusting the future of the company and their software to a few makers, and as they defend against that, they end up with three layers of managers and a product designed by a committee. We want the opposite. We need the opposite as we enter virgin territory trying to build that CI/CD pipeline and process for the support organization. As our customer pushes a new feature to production, we automatically update all product images within the help center. This is a thrilling adventure!
Our work is remote, not distant. We believe that being a remote-first organization allows us to build an exceptional team composed of makers and sellers with erse backgrounds and skill sets from around the globe. Our default work culture is asynchronous and emphasizes written communication to prioritize maker time, focus and company productivity. Our goal is not to eliminate face-to-face interaction, but we should default to a setting where written documentation is so strong that a meeting on most project subject matters would seem odd.
Founded in 2022, and backed by prominent venture firms including IA Ventures, Tuesday Capital, and B Capital Group, this is a unique opportunity to join this band of misfits on the ground floor. As an early teammate you will be working intimately with the founding team, who has done 0 to 1 five times over while seeing four of them come to an exit.
The Application Engineer will become an integral member of an intimate 9-person team consisting of:
Maker #7 (Application Engineer, You!)
Maker #6 (Melissa, Implementation Specialist)
Maker #5 (Michel, Frontend Engineer)
Maker #4 (Lucas, Frontend Engineer)
Maker #3 (Jose, Fullstack Engineer)
Maker #2 (Hyder, Backend Engineer)
Maker #1 (Dennis, Founder)
Seller #1 (Josh, Co-founder)
Helper #1 (Vibeke)
However, we are looking not just for an Engineer but, rather, a teammate we see as integral to LaunchBrightly’s long-term journey and vital to our success. Someone who is comfortable in the dark and who sees a certain romance, like we do, in embracing the unknowns that come with being on the startup journey. We have a track record of seeing those colleagues who join us on the ground floor of our ventures ride the startup journey to completion (exit) with us, as we grow and become successful together. This is something we take seriously, and something we are extremely proud of!
Job Description
You'll work with Jose (and the remainder of the team) on the logic layer that powers our product: workflows, task runners, state machines, rules engines, and orchestration. You'll work in Typescript directly in the Vue App, and often in JS in AWS Lambda’s, tune our data models, and shape how primary product features like Audits function behind the scenes. You're not building APIs or UI — you're building the actual product behavior. Think of yourself as a Product Logic & State Orchestration Engineer.
This is a hands-on role for an engineer who loves building reliable systems that model real-world processes. You’ll work on the internal state machines that govern how screenshots flow through the system, are transformed, enhanced, and delivered. You’ll define rules engines that let non-technical users control automated behavior, manage task orchestration across Lambda and queues, and shape our schema design to handle complex edge cases with clarity and performance in mind.
You’ll thrive in this role if you think deeply about how complex systems behave over time, have strong opinions on data modeling and event-driven workflows, and enjoy writing deterministic, testable, observable logic. If you care more about product behavior than presentation, and love turning business intent into robust execution — this is for you!
We are looking for previous experience working with
Building production-grade B2B web apps, including everything that comes with robust, scalable software: business logic, testing, observability, and performance.
Writing TypeScript in a modern frontend architecture (Vue 3 SPA) and JavaScript in AWS Lambda functions.
Working deeply to create meaningful and maintainable test coverage across core business logic (e.g. Vitest).
Designing and modeling robust data schemas for DynamoDB and GraphQL queries, with a strong intuition for how data shapes product behavior.
Consuming and reviewing internal APIs using Postman, and contributing clear, actionable feedback to improve them.
Implementing Serverless architecture with AWS Amplify, including event-driven flows and task orchestration.
Having a good functional understanding of UI-layer concerns (HTML, DOM, TailwindCSS, HeadlessUI), but focusing your energy on what happens beneath the surface — the orchestration, rules, and workflows that make the app tick.
What you bring to the table
Minimum of 3 years of industry experience
A customer-first mentality, with an instinct to imagine how users will react and interact
Strong and precise communication and documentation skills, with a will to understand and be understood
Prides themselves on writing highly readable, thoroughly tested code
The personal organization skills and patience to manage multiple contexts as projects and features come together. A good dev can do things like: juggle tickets and Git branches, keep zero inbox, write notes for themselves to keep their small tasks straight, whip up shell scripts/test data to automate repetitive tasks
A passion for being part of the startup journey and taking ownership of the company’s success
A willingness to take initiative and enthusiasm to make an impact and take action
Thrives in a highly collaborative environment and enthusiasm for being a team player
Bonus point if you
Built Apps on the AWS Amplify (Serverless Design) framework, which is the primary backdrop for our App.
What we offer
Flexible working hours and locations. Your success is measured on outcomes
A culture of NO meetings where maker time and productivity is prioritized
Excellent start-up culture with openness and inclusiveness
True ownership and autonomy over your role and the impact on the company
Prioritization of focus time and productivity
Your choice of technical setup and equipment
Experienced founders with many years of successfully building product across multiple ventures
Annual meetup as a team in New York City.
What to expect in the interview process
Given the remote nature of our work setting, one of the core principles for how we operate as a remote team is written communication. And we therefore run a slightly unique interview process that begins with an email-based exchange to learn more about your background, communication style and overall fit for the role.
Stage 1: You’ll begin with an email conversation with our Co-founder, Josh Peacock, to get a sense of your technical background, written communication, and English proficiency.
Stage 2: Next, you'll have a follow-up email exchange with one of the Makers on our team on a set of more technical questions to get a deeper understanding of your technical knowledge and capabilities.
Stage 3: We’ll then ask you to complete a short technical assignment to demonstrate your practical skills in action.
Final stage: You’ll have two video calls—one with our Founder, Dennis Mortensen, and another with a Maker from the team to give us a chance to connect more personally and explore how you'd fit into the team.
Salary and compensation
$50,000 — $60,000/yearjavascriptkotlinsveltetailwindtypescript
About Us
Green Stuff World is a bootstrapped and profitable online hobby shop with over 10 years in the market and a team of ~80 staff. We’re growing fast, and our current tech stack can no longer keep up. That’s why we’ve been building a new 100% remote engineering team to modernize our platform.
Our backend is being rebuilt using C# on .NET 9. On the frontend, we use TypeScript with the Svelte framework to create fast, reliable web experiences that scale to high usage.
About You
We’re looking for an experienced, full-time Frontend Software Engineer to join our team. You should have a solid understanding of modern web technologies and a passion for designing and building user-facing features from the ground up.
Requirements
+ 4 years of experience building modern frontend applications with JavaScript, HTML, and Tailwind CSS
+ At least 1 year of experience working with Svelte+ Strong skills in debugging, performance optimization, and writing clean, maintainable code+ Strong UI design skills and a good eye for detail+ Deep understanding of REST APIs and HTTP requests+ Experience participating in code reviews and maintaining a scalable frontend architectureNice to Have
+ Experience with native mobile app development (Kotlin) - yes we will be building mobile app nextWhy Work With Us?
+ 100% remote (we believe in trust and autonomy)+ Flexible working hours+ 30 days of holiday - take them whenever you need+ No strict policies or hard deadlinesSalary
We offer between $30,000 and $40,000 USD annually, depending on experience.
Please mention the word DOMINATE when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$30,000 — $40,000/yearBenefits
🌎 Distributed team
⏰ Async
🏖 Paid time off
👀 No monitoring system
🚫 No politics at work
🎅 We hire old (and young)
full stackinfra
ModelVault is building the world’s first fully-integrated, on-prem AI appliance — a plug-and-play AI server preloaded with software, models, and tools that let businesses (and eventually consumers) run powerful AI models locally, privately, and securely.
We're looking for a Senior Software Engineer to help us build the core software stack that powers our on-prem systems — from model integration and system orchestration to user interfaces and remote updates. You’ll be a key technical partner in defining our architecture, tools, and technical culture from day one.
🚀 What You’ll Do
Design and build the software stack that ships with ModelVault’s on-prem AI systems — everything from containerized inference engines to local dashboards and command-line tools.
Set up and manage integration with modern LLMs and vision models (e.g. LLaMA, Mistral, SDXL), including support for fine-tuning and local deployment.
Build and maintain user-facing tooling: CLIs, lightweight GUIs, and APIs that make the device intuitive for developers and AI teams.
Make architecture decisions for system orchestration, hardware interfacing, remote update pipelines, and telemetry — all optimized for stability and security.
Help set up GPU drivers, OS configuration (e.g., Ubuntu, NVIDIA stack), and optimized inference runtimes as needed.
Collaborate with the founding team to test and iterate with early business customers.
Contribute to hiring and scaling the engineering team over the next 12 months.
🧠 You Might Be a Fit If You
Have 5+ years of software engineering experience, preferably at early-stage startups or in fast-paced environments.
Are comfortable working across the stack — from OS-level setup and deployment to user-facing tools.
Have experience with containerization, system packaging, deployment tooling, and managing model runtimes.
Have worked with, or integrated, LLMs and ML models in real-world systems (e.g., inference, fine-tuning, embeddings).
Can independently drive architecture decisions and own large pieces of product infrastructure.
Thrive in ambiguity, learn fast, and are passionate about building great tools from scratch.
⭐️ Bonus Points
Experience with GPU computing, NVIDIA drivers, CUDA, or model acceleration tools.
Familiarity with ML tooling: vLLM, Ollama, Triton Inference Server, LangChain, etc.
Comfort with Linux system internals, remote access tooling (e.g., SSH, Ansible), or auto-update agents.
Previous experience with AI developer tooling, embedded systems, or secure local apps.
🌍 Why Join ModelVault?
Help define a new category: secure, local AI for everyone — starting with businesses, expanding to the world.
Work on real, shipped hardware + software that users will touch.
Be part of the founding engineering team with high autonomy and deep ownership.
Fully remote, async-friendly, with strong product velocity and clear vision.
Salary and compensation
$50,000 — $80,000/yearBenefits
🌎 Distributed team
⏰ Async
🏖 Paid time off
📚 Learning budget
💰 Profit sharing
🚫 No politics at work
$130k – $175kengineerfrontend engineer
Axios is hiring a remote Senior Frontend Engineer. This is a full-time position that can be done remotely anywhere in the United States.
Axios - Smart brevity worthy of people's time, attention and trust.
defiengineerethereumfrontend engineerfull-time
Tokemak is looking to hire a Web3 Junior Frontend Engineer to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
developerinternshipremote
About the Codex Student Program
The Codex Student Program (CSP) is aimed at Bachelor, Master’s or PhD students looking to gain experience and do research and development in one of the domains of interest related to the Codex project. The grant is intended to help students gain visibility into their field of interest while also allowing them to learn about standard research and development practices that should be beneficial for their continuing careers.
Responsibilities
- Create engaging developer-focused content (blog posts, tutorials, social media)
- Build simple demonstrations and code examples showcasing our technology
- Assist with content strategy and identify topics that resonate with developers
- Help measure and track the impact of content initiatives
- Collaborate with product and engineering teams
Requirements
- Currently pursuing a degree in Computer Science or related field
- Basic coding experience, particularly in technologies we use in Codex
- Strong written and verbal communication skills
- Curious about decentralized technologies and storage solutions
- Ability to explain technical concepts clearly
- Self-motivated and comfortable working in an async, fast-paced environment
The Grant
The CSP is very flexible and adapts to different levels of experience and various lengths. The following numbers are just indicative, as the final stipend might slightly change depending on the student experience and to adapt to differing regions’ costs. For an officially enrolled PhD student, the CSP offers a stipend in the range of $2,000/month (full-time equivalent).
In addition, the CSP may offer mobility grants to attend meetings and related conferences within the scope of the internship’s research field.
Application
To submit your application, please fill out this form providing the following documents:
- Up-to-date Curriculum Vitae
- A cover letter expressing your research interests
- Proof of enrollment in your university
- Reference letter from one of your university professors
- Applications will be evaluated a few weeks after submission. Students passing the initial evaluation will be contacted to pass a short interview.
The fees, duration of the agreement, and deliverables shall be reviewed on a case-by-case basis and as set out in the contractor agreement to be signed by the student. Please consider that once you have signed the agreement, you must comply with the local regulations for the provision of the services that are applicable in your country of residence or nationality.
awsdefideveloperfull stack developerfull-time
About Us
Re7 Capital is a London-based cryptoasset investment firm, leveraging our deep crypto network and proprietary data infrastructure to drive investment decisions across various DeFi and alpha strategies. Through Re7 Labs, we also collaborate with leading projects and blockchains to design DeFi ecosystems, provide on-chain risk curation, and deliver vault management services.
Our team combines expertise in investment management, data science, and crypto. To support our continued growth, we are seeking a motivated Full Stack Web Developer to join our engineering team. Reporting directly to the Head of Technology, you will take full ownership of our dApps, used to interact with our vault smart contracts.
Responsibilities
- Develop and maintain responsive, user-friendly front-end interfaces using React, Next.js, Vue or similar frameworks.
- Integrate EVM and non-EVM smart contracts using libraries like Ethers.js, Web3.js, Viem, Starknet.js and wallet connectors such as ConnectKit and wagmi.
- Support wallet integrations including MetaMask, Argent X, and Braavos.
- Design and implement scalable back-end services and APIs using Node.js, Express, and related technologies.
- Collaborate with blockchain engineers to interact with smart contracts and on-chain data.
- Implement best practices for security, including wallet connectivity, transaction handling, and protection of user data.
- Deploy and maintain applications on AWS (EC2, Elastic Beanstalk, S3, CloudFront), with a focus on scalability, logging, and monitoring.
- Set up and manage CI/CD pipelines using GitHub Actions or similar tools to automate testing and deployment workflows.
- Deploy applications to decentralized hosting environments (e.g., IPFS, Fleek) as well as cloud-based infrastructure.
- Ensure performance optimization through CloudFront caching, invalidation strategies, and SSL/TLS management.
- Contribute to Whisk infrastructure and security, ensuring resilient and secure production deployments.
- Work closely with designers, PMs, and cross-functional teams to define and deliver new DeFi features and enhancements.
- Implement and maintain interactive UI elements and animations using modern HTML/CSS (including transitions, keyframes, and responsive styling) within PHP-based web applications.
Requirements
- Proficiency in JavaScript/TypeScript and PHP.
- 5+ years of experience in web development, including 3+ years in dApp development.
- Hands-on experience integrating and interacting with both EVM and Non-EVM smart contracts.
- Familiarity with ConnectKit, wagmi, and Viem libraries for modern wallet connection flows.
- Experience deploying web applications on AWS using services like Elastic Beanstalk, EC2, and S3, with understanding of environment config, auto-scaling, and CloudWatch logging.
- Proficient in setting up CI/CD pipelines using GitHub Actions (or similar tools), including artifact packaging and automated deployment.
- Working knowledge of CloudFront, CDN behavior, cache invalidation, and AWS Certificate Manager.
- Familiarity with IAM roles, security groups, VPC setup, and cloud infrastructure security best practices.
- Experience with front-end frameworks (React, Next.js, Vue, etc.)
- Comfortable working in Linux environments and using Git for version control.
- Understanding of DeFi concepts and major protocols (e.g., Uniswap, Aave, Curve).
- Awareness of and ability to support Whisk infrastructure and security requirements.
- Basic knowledge of HTML5, CSS3, and animation techniques (e.g., transitions, keyframes, scroll-triggered effects), with the ability to integrate them into PHP-rendered views or templating engines.
Benefits
- A dynamic, collaborative, and highly technical work environment.
- Opportunities for professional growth in a rapidly evolving industry.
- Remote-first setup with regular opportunities to meet the team in person.
- Competitive compensation package.
Application Process
Please submit the following:
- Your resume
- A cover letter explaining your interest in the role
- Your response to the following technical challenge:
- Challenge: Describe a high-level architecture and solution for a dApp that supports both EVM and non-EVM wallets (e.g., MetaMask and Braavos). Include considerations for wallet detection, abstraction, and secure transaction signing.
full-timeremote - ussecurity
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developer relationsethereumfull-timelayer 2remote
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engineerremote americastechnical support
GitLab is hiring a remote Support Engineer (Sunday Coverage - AMER). This is a full-time position that can be done remotely anywhere in Americas.
GitLab - A single application for the entire DevOps lifecycle.
About the Codex Student Program
The Codex Student Program (CSP) is aimed at Bachelor, Master’s or PhD students looking to gain experience and do research and development in one of the domains of interest related to the Codex project. The grant is intended to help students gain visibility into their field of interest while also allowing them to learn about standard research and development practices that should be beneficial for their continuing careers.
Responsibilities
- Help increase awareness of Codex & its tech stack
- Create sample applications and code examples
- Support developers through forums, documentation, and direct engagement
- Gather feedback from the developer community to improve our platform
- Represent our project at virtual events, hackathons or university gatherings
- Seek opportunities to organise Codex developer meetups and coding challenges
Requirements
- Currently pursuing a degree in Computer Science or related field
- Comfortable with public speaking and technical demonstrations
- Basic understanding of decentralized technologies
- Enthusiasm for engaging with developer communities
- Strong problem-solving skills
- Interest in building your personal brand within the tech ecosystem
The Grant
The CSP is very flexible and adapts to different levels of experience and various lengths. The following numbers are just indicative, as the final stipend might slightly change depending on the student experience and to adapt to differing regions’ costs. For an officially enrolled PhD student, the CSP offers a stipend in the range of $2,000/month (full-time equivalent).
In addition, the CSP may offer mobility grants to attend meetings and related conferences within the scope of the internship’s research field.
Application
To submit your application, please fill out this form providing the following documents:
- Up-to-date Curriculum Vitae
- A cover letter expressing your research interests
- Proof of enrollment in your university
- Reference letter from one of your university professors
- Applications will be evaluated a few weeks after submission. Students passing the initial evaluation will be contacted to pass a short interview.
The fees, duration of the agreement, and deliverables shall be reviewed on a case-by-case basis and as set out in the contractor agreement to be signed by the student. Please consider that once you have signed the agreement, you must comply with the local regulations for the provision of the services that are applicable in your country of residence or nationality.
engineerremote argentinasoftware engineer
Mural is hiring a remote Senior Software Engineer, eCommerce. This is a full-time position that can be done remotely anywhere in Argentina.
Mural - Online brainstorming, synthesis and collaboration.
contractdefideveloperethereumevm
Serokell is a fast-growing, fully remote software development company that works on innovative solutions for complex problems. We’re packed full of adventurous, curious, and inclusive folks who want to build cutting-edge software with modern technologies like functional programming.
This position is open now with a July start. This is a project-based hire with the option to extend if it is a good match. Submit your CV and we’ll reach out promptly.
We’re seeking a middle to senior level Solidity Developer to join a team of fierce and fun Serokellers.
Hiring Process Overview: We invite candidates to the HR screening as the first step. Next, we conduct a technical interview with those whose profiles align with our requirements. Successful candidates will receive an offer.
Requirements:
- Fluency with Ethereum or another EVM-based blockchain ecosystem
- 2+ years in software development
- 1+ years experience writing, testing, and deploying Solidity contracts
- Hands-on experience with Hardhat, Foundry, Truffle, or Remix for development, testing, and debugging, including transaction submission, data retrieval, and key management
- Understanding of security issues and best practices for Ethereum and De-Fi applications
- Knowledge of popular token standards such as ERC-20, ERC-721, and ERC-1155
- Experience developing and integrating decentralized applications, both backend and frontend
- Basic understanding of cryptography primitives: public/private keys, signing, encryption, hashing
- Knowledge of fundamental algorithms and data structures like hash tables, binary search trees, DFS, quicksort
- Strong coding practices, including clean code structure, use of git, pull requests, and code review
- Fluent English, strong communication and collaboration skills
- Comfortable with daily stand-ups and asynchronous updates
- Self-driven, proactive, teamwork-oriented, curious and inclusive mindset
- Full-time commitment, around 140–160 hours per month
- Comfortable overlapping with team time zones from UTC 0 to UTC -8
It will be a significant plus if you have:
- Knowledge of TypeScript, Haskell, Rust, or OCaml
- Experience conducting security audits and identifying vulnerabilities
- Understanding of computer networks, HTTP, TCP/IP stack, and data synchronization models used in modern service APIs
- Familiarity with build/deploy automation tools and CI/CD systems such as Docker, Nix, Kubernetes
Responsibilities:
- Create and implement secure and efficient Solidity contracts, ensuring scalability, reliability, and maintainability
- Integrate contracts with EVM blockchain networks, often involving backend or frontend work
- Review and audit code
- Develop and execute unit tests, integration tests, and end-to-end tests
- Write detailed documentation for code, including design specs, user guides, and API documentation
- Stay updated on the latest developments in Solidity, Ethereum, and EVM-related technologies, cryptographic methods, and relevant programming languages
- Optimize code performance and gas efficiency
- Implement and enforce security best practices to protect contracts from common vulnerabilities
- Provide ongoing support and maintenance for deployed applications, addressing user-reported issues and bugs
We offer:
- Competitive salary.
- Engaging international projects.
- Participation in leading global conferences.
- International and multicultural teams.
- Fully remote work with flexible hours.
- Ability to take time off as needed.
- Investment in career and professional growth, with potential for wage increases.
- Mentoring and training programs.
- Opportunity to contribute to a leading functional programming blog.
- Therapy sessions for well-being support.
By joining Serokell, you’ll become part of a warm community of ingenious engineers, computer scientists, designers, marketing experts, and other inventive minds. You’ll work on ambitious projects building the next generation of computer software, explore creative initiatives unhindered by bureaucracy, and enjoy our vibrant Slack channels—ranging from #music to #philosophyandtears (did we mention the massive custom emoji set?).
Stay in the loop.
Follow @raikucom on Twitter for product updates, engineering deep es, and a closer look at how we’re building the future of blockspace.
About Raiku
Raiku is reengineering blockchain infrastructure from first principles to make global digital markets as precise and dependable as physical systems. Built on Solana, our platform delivers deterministic execution, guaranteed inclusion, and low-latency performance—solving the foundational failures that cause transactions to miss, trades to revert, and systems to collapse under pressure. By placing high-performance compute close to where transactions happen and coordinating execution through our advanced scheduling engine, Raiku empowers developers to build scalable, high-performance applications—and gives institutions the reliability and control they demand. We believe financial infrastructure should behave like physics: fast, reliable, and predictable—every time, without exception.
Research Engineer (Solana/Rust)
We’re seeking a passionate Research Engineer to drive protocol-level innovation on Solana. As the ideal candidate, you’ll combine deep technical expertise with scientific curiosity to:
- Lead technical discovery initiatives focused on Solana’s runtime, consensus, scheduler, and networking layers
- Conduct performance modeling and develop validator-centric architecture solutions
- Identify and address complex edge cases in transaction handling across production environments
- Translate research findings into actionable protocol design improvements
You’ll collaborate directly with our CEO, CTO (your manager), protocol architects, and key Solana ecosystem contributors to shape validator economics and transaction lifecycle guarantees across the Raiku stack.
Key Responsibilities
- Analyze and model Solana’s core architecture — deeply understand and document Solana’s runtime, scheduler, consensus, Turbine/Gossip, and transaction pipeline, with emphasis on edge cases under network stress or validator misbehavior.
- Lead internal research on validator economics and incentive alignment — explore impacts of Raiku’s slot marketplace, Ahead-of-Time (AOT) block auctions, and inclusion guarantees on validator profitability and slashing risks (e.g. under SIMDs 0096, 0123, 0212, 0228).
- Design bandwidth and blockspace pricing models — define and simulate pricing mechanisms for Raiku’s primary and secondary slot markets, ensuring validator rewards and application inclusion needs are economically aligned.
- Prototype system-level experiments across the Raiku and Solana stack — evaluate performance, liveness, and correctness when integrating Raiku’s ackermann-node and sidecar into Solana validator clients (e.g. Agave, Jito).
- Develop proofs-of-concept for transaction lifecycle primitives — such as pre-confirmations, slot reservations, and proof streaming for large bundled state transitions.
- Research and benchmark global account models — test interaction models across multiple VMs (e.g. SVM, EVM, MOVE) and assess state determinism and composability in high-throughput environments.
- Contribute to the design of Raiku’s protocol-level mechanisms — including builder commitments, proposer formats, MEV mitigation strategies, and slot slashing logic under failure modes.
- Author technical deep es, simulations, and RFCs — serve as a knowledge base for both internal and external stakeholders across Raiku’s validator, capital, and app layers along with wider engineering and marketing teams.
- Collaborate with external researchers and validators — especially those running testnet sidecars or participating in bandwidth resale to ensure safe and performant mainnet integration.
Preferred Qualifications
- Technical background with strong system-level experience
- Proven open-source engineering background, evidenced by contributions to major blockchain or distributed systems repositories — ideally within the Solana ecosystem.
- Involvement in protocol research, MEV, performance tuning, or client implementations
- Experience designing proofs-of-concept for novel execution or slot-inclusion logic
- Familiarity with zero-knowledge proof systems and state settlement patterns
- Active presence in relevant research circles, Discords, or open-source forums
What We’re Looking For
- 3+ years of experience working with Rust in production (preferably in core systems or blockchain contexts)
- Deep familiarity with Solana’s source code and protocol-level architecture (runtime, scheduler, consensus, networking)
- Demonstrated ability to reason through complex distributed systems
- Experience modeling and explaining performance bottlenecks in real-world validators
- Ability to read protocol proposals and specs and convert them into actionables (e.g. implementation paths, test harnesses, edge case coverage)
- A deep design philosophy focused on deterministic execution and reliable system behavior
- Strong communication skills and clarity in technical writing
What We Offer
- A chance to join a category-defining protocol team pushing the frontier of Solana infrastructure
- Token upside and a key role in shaping Raiku’s ecosystem footprint
- Remote-first team with async workflows, a high ownership culture, and deep technical curiosity
- Competitive salary, token allocation, and performance-based bonuses
- Budget for travel, ecosystem events, and home office setup
$86k – $124.1kdeveloperengineertechnical support
Airtable is hiring a remote Developer Support Engineer. This is a full-time position that can be done remotely anywhere in the United States.
Airtable - Build powerful work apps, without coding.
entry-levelethereumevminternship
Gnosis is looking to hire a Summer Internship (Ethereum Ecosystem) to join their team. This is an internship position that can be done remotely anywhere in EU or India time zone +/- 3 hours.
awsbackendopspythonsenior
🚀 About Orga AI
Orga AI, headquartered in Palma de Mallorca, builds real-time AI systems that see, listen, and speak. Our mission is to enable people to interact with technology in a fluid and natural way through the multimodality of AI.
🛠️ Responsibilities
Design and optimize Python 3.11 / FastAPI / asyncio-based APIs and microservices powering our SDK and TTS engine.
Integrate and scale audio-video components (WebRTC, WebSockets) to maintain latency below 300 ms.
Implement secure and scalable architectures in AWS EKS + Fargate, using IaC (Terraform) and CI/CD (GitHub Actions).
Ensure observability with Prometheus/Grafana and maintain defined SLOs.
Collaborate with the MERN and DevOps teams for efficient continuous deployments.
Mentor junior team members and participate in code reviews with a focus on best practices.
🎯 Requirements
5+ years of experience building production-grade backends with Python.
Expertise in concurrency and high-performance systems (asyncio, multiprocessing, profiling).
Professional English proficiency and time zone overlap within CET ± 2 hours.
✨ Nice to Have
Experience with audio/video streaming or TTS.
Work with LLMs, PyTorch, Transformers, or ONNX Runtime.
Knowledge of Rust or Go for high-performance paths.
Experience leading end-to-end features in fast-paced environments.
🌍 What We Offer
100% remote contract, flexible schedule focused on outcomes.
Multidisciplinary team and a culture of continuous feedback.
📜 Selection Process
Interview (40 min)
Technical Deep-Dive (90 min) – Pairing with the CTO
Cultural Fit & Roadmap (45 min) – Chat with the CEO and Co-CEO
All steps are completed within ≤ 7 days from the initial interview.
🚀 We’re Not Your Typical Startup
Orga AI is a startup founded by Marc Revert (CEO), a 17-year-old entrepreneur, and Julio Roldán (Co-CEO), a seasoned professional with over 30 years of experience. Our international team of 18 members spans the US, Japan, Argentina, Spain, and France.
We are part of the Santander X100 program, ranked #55 among the top 100 startups by El Referente, and backed by both public and private funding. Please mention the word CONVIENIENT when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$40,000 — $60,000/yearBenefits
🌎 Distributed team
💰 Equity compensation
🎅 We hire old (and young)
entry-levelinternshipmachine learningremote - usresearch
Sahara AI is looking to hire a ML Research Intern to join their team. This is an internship position that can be done remotely anywhere in the United States.
react native
About UsInterviews Chat is an AI-powered platform helping people ace their job interviews in 32 languages around the world. It features Interview Prep for practicing tailored questions and Interview Copilot for real-time support during online interviews. Built with Next.js, React, Node.js, and OpenAI, the platform is growing fast! We've recently launched a Chrome extension and a desktop app — and now we’re ready to expand into mobile. That’s where you come in.
Role OverviewWe’re looking for a skilled React Native Developer to help us build our first mobile app. You’ll play a key role in translating the core functionality of Interviews Chat into a fast, intuitive mobile experience. Working closely with the founder and a lean, driven remote team, you’ll take ownership of the mobile codebase and help bring our AI assistant to users on the go.
What You’ll Do
- Build and maintain the Interviews Chat mobile app using React Native.
- Collaborate with the existing team to bring Interview Copilot and Interview Prep to mobile.
- Implement smooth, native-feeling UI and seamless integration with backend APIs.
- Optimize performance for both iOS and Android platforms.
- Handle edge cases around audio, permissions, and background activity (e.g. for meeting-based interviews).
- Test, debug, and iterate quickly based on user feedback.
What We’re Looking For
- 3+ years of experience building mobile apps with React Native.
- Strong command of JavaScript/TypeScript, React, and mobile performance optimization.
- Familiarity with mobile-specific challenges: push notifications, audio access, app permissions, App Store / Play Store submission.
- Experience integrating REST or GraphQL APIs.
- Ability to work independently in a fast-paced remote environment.
- Bonus: experience with speech-to-text, OpenAI, or real-time data handling.
- Bonus: previous work on tools or products related to productivity, video/audio communication, or AI.
Why Join Us?
- Work remotely from anywhere in the world.
- Be the lead mobile developer on a growing product with real impact.
- Shape the future of a tool that helps people land jobs and level up their careers.
- Collaborate with a highly technical, no-fluff team.
- Flexible working hours and competitive compensation.
About the Process
We keep it simple and fast. If your profile looks like a match, we’ll reach out for a quick chat. No take-home tests, just real discussion and code if needed.
Please mention the word ENCOURAGING when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$60,000 — $120,000/yearBenefits
🌎 Distributed team
⏰ Async
🏖 Paid time off
⬜️ No whiteboard interview
🚫 No politics at work
🎅 We hire old (and young)
apiengineerfull time
Jump | Software Engineer Full-Time (Contractor) | Global Remote
Who are we?
Hi! We’re jumpapp.com and we’re looking for contract software engineers. Our startup is moving fast, our customers love us, and we have an incredible team of people who are collaborative and deeply care about what we’re building!
If you don't have experience with everything in our tech stack still apply! We are willing to teach the right candidates and get them up to speed. Our tech stack is Elixir, Liveview, Postgres, Github, k8s & Terraform on Google Cloud.
What is the job?
This role pays $30-$70/hr and is for global software engineering contractors.
You can work any hours from anywhere. Our code is clean, well tested, well architected and fun to work in. You’ll love how quickly you can ship stuff!
What is the hiring process?
We have a 3 step hiring process and it takes about a week.
First, we’ll send a screening test where you’ll have 30 minutes to record your screen building a simple app.
Second, you’ll have 48 hours to build a real feature (as your own app) that we actually need. Anyone who successfully completes this challenge before the deadline will be paid $3,000. It must be a complete deployed & working app with all requirements met perfectly. If hired your first task will be to use your code to finish building the feature.
Finally, if your code looks good, our final step is a short chat with our CTO.
You can and should use AI to help you create this app. We are all in on the use AI and want someone who can make the most of it!
Stats on that paid project:
140 people were invited to the screening test
10 people successfully completed the screening test.
7 people submitted a project.
4 people earned $3,000 for a perfect working app
2 people were hired full-time
We’ve done 7 rounds and each person we’ve hired has been truly amazing. We look forward to finding the next!
Our Culture
We have a rigorous hiring process yet a kind and encouraging culture. We hire for a mix of experience, aptitude & attitude. We are a family-first company (13 kids among the founders), so we work smart and hard but not round the clock at the expense of family.
Other info:
We buy the subscriptions you need (Cursor.ai, ChatGPT, etc)
We’re a small and efficient dev team
We’re growing gangbusters. All revenue-backed, super low churn.
Raised a $20M Series-A a few months ago
$30-$70/hour depending on experience
HQ based in SLC, Utah
You can work any hours from anywhere
Salary and compensation
$60,000 — $140,000/year$180k – $220kbackend engineerengineer
Eight Sleep is hiring a remote Senior Backend Engineer. This is a full-time position that can be done remotely anywhere in the United States.
Eight Sleep - The sleep fitness company.
$118k – $231kaiengineer
MongoDB is hiring a remote Senior AI Engineer, Code Generation. This is a full-time position that can be done remotely anywhere in the United States.
MongoDB - The database for modern applications.
$150k – $200kengineerfrontend engineer
Customer.io is hiring a remote Senior Frontend Engineer. This is a full-time position that can be done remotely anywhere in Americas.
Customer.io - Power automated communication that people like to receive.
Role Intro
Ethereal is DeFi’s next major trading protocol and the first built on Ethena. Recently launching Testnet, we’re at $700M+ TVL on track to become a top 10 ecosystem. This is a rare opportunity to join a world class DeFi team.
We’re building a Perps DEX, which will handle over 1 million orders per second delivering CEX level performance, with on-chain security.
You’ll be part of an engineering-first team solving deep, complex problems that haven’t been tackled before. If you thrive in an environment about optimisation, distributed systems, and real-time performance at scale, this is your kind of challenge.
This is a remote team who work within AEST, strong preference for AU/NZ location, but all applications must be from timezones within GMT +7 and GMT+13.
About the Role
We’re hiring a Senior Backend Engineer to help design and optimise the core infrastructure across both an on/off chain EVM/Typescript architecture. You’ll be working on high-throughput systems that redefine execution speed and efficiency in DeFi.
What You’ll Be Doing
- Designing and implementing scalable, distributed backend systems to handle millions of orders per second.
- Optimising for latency and performance
- Working with event-driven architectures, real-time data pipelines, and high-throughput APIs.
- Collaborating with front end and protocol engineers to build an entirely new class of DeFi trading infrastructure.
- Ensuring fault tolerance, efficiency, and security across the platform.
What We’re Looking For
Essential Skills:
- Strong experience in backend development using Node.js & TypeScript building applications that have proven to scale
- Deep understanding of and experience with distributed systems - scalability, high availability, and performance tuning.
- Strong experience with CI/CD, AWS.
- Experience building or contributing to production DeFi or web3 projects.
Highly desirable:
- Prior work with real-time trading systems or large-scale on-chain applications
- Solidity/smart contract knowledge is not essential but a bonus.
Why Join Us?
- Fully remote (AEST ± 3 hours)
- Get paid on-chain (USD stables)
- Work alongside world-class engineers building core DeFi infrastructure
- Get early ownership in a protocol with $700M+ TVL and serious momentum
- Solve complex, technical problems with real user impact
- No politics - just sharp, curious engineers delivering fast
If you’re passionate about building the future of DeFi, let’s chat.
backendfront endfull stackjavascriptnode
💡 We are seeking a Senior Fullstack Developer with a strong backend focus to join our core team. This hands-on role is ideal for candidates who take full ownership of their work and are passionate about building scalable, high-impact iGaming solutions. You will drive the development of partner integrations, backoffice tools, and APIs, while collaborating closely with other experts to deliver robust, AI-powered features. 💡
Key Requirements
- Significant experience in fullstack development, with a strong focus on backend systems
- Recent hands-on experience in high-load, successful product teams (iGaming or similar domains preferred)
- Demonstrated proficiency in AI engineering practices (must-have)
- High level of ownership and initiative in driving projects from concept to delivery
Tech Stack
- Node.js (primary backend)
- React (frontend)
Responsibilities
- Lead the development and integration of partner systems
- Build and maintain backoffice tools for internal operations and analytics
- Design, implement, and optimize APIs for internal and external use
- Provide ad-hoc technical support and solutions for evolving business needs
- Collaborate with cross-functional teams to deliver AI-driven features and enhancements
- Ensure scalability, security, and performance across all systems
What We Offer
- The opportunity to shape the future of iGaming with innovative, high-impact products
- Work in a high-ownership, expert-driven environment alongside industry leaders
- Competitive compensation and long-term growth potential
If you are a skilled fullstack developer with a backend mindset, strong AI expertise, and a passion for building next-gen gaming infrastructure, we want to hear from you.
Please mention the word SOUNDLY when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$60,000 — $90,000/yearBenefits
🌎 Distributed team
🏖 Paid time off
👀 No monitoring system
🚫 No politics at work
🎅 We hire old (and young)
$200k – $288kengineering managernon-tech
Boulevard is hiring a remote Director of Engineering (Data). This is a full-time position that can be done remotely anywhere in Canada or the United States.
Boulevard - Software for self-care.
$101.6kengineertechnical support
Sourcegraph is hiring a remote Senior Support Engineer - US West [IC3]. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
Sourcegraph - Advanced code search.
full-timeremoteresearchsolanatechnical writer
About Us
Raiku is reengineering blockchain infrastructure from first principles to make global digital markets as precise and dependable as physical systems. Built on Solana, our platform delivers deterministic execution, guaranteed inclusion, and low-latency performance—solving the foundational failures that cause transactions to miss, trades to revert, and systems to collapse under pressure. By placing high-performance compute close to where transactions happen and coordinating execution through our advanced scheduling engine, Raiku empowers developers to build scalable, high-performance applications—and gives institutions the reliability and control they demand. We believe financial infrastructure should behave like physics: fast, reliable, and predictable—every time, without exception.
About the Role
As a Protocol Research Specialist at Raiku, you will be at the forefront of protocol research and development, bridging the gap between technical innovation and market implementation. You’ll be crucial in monitoring and influencing protocol developments while translating complex technical capabilities into compelling use cases for our target markets. This position requires a unique blend of technical expertise, market understanding, and communication skills.
Core Responsibilities
Protocol Research & Development
- Monitor and analyse Solana protocol changes (SIMDs) and their impact on Raiku’s infrastructure
- Drive Raiku’s protocol development by drafting and advocating for strategic SIMDs
- Host technical workshops with the team on relevant SIMDs and architectural changes to the network.
Product & Commercial
- Create technical use cases and system diagrams showcasing Raiku’s infrastructure capabilities.
- Support commercial discussions with partners and clients
- Transform technical capabilities into clear value propositions for target sectors
- Bridge the gap between technical capabilities and commercial opportunities
Technical Communication & Writing
- Produce technically accurate content for marketing and educational purposes.
- Represent Raiku in technical discussions across public forums
- Collaborate with the team on technical documentation and presentations
- Contribute to the company’s thought leadership in the Solana ecosystem
What You’ll Bring
- Bachelor’s degree or higher in Computer Science, Engineering, or related technical field
- Proven track record of writing in-depth technical articles mainly focused on blockchain protocol architecture and improvement proposals
- Ability to effectively bridge business requirements with technical specifications
- Deep understanding of blockchain protocols, particularly Solana’s architecture and ecosystem
- Experience with protocol development and improvement proposals
- Outstanding technical writing and documentation skills
- Proven ability to translate complex technical concepts into clear, business-focused use cases
- Excellent communication skills for both technical and non-technical audiences
- Track record of working independently while collaborating effectively with cross-functional teams
Preferred Qualifications
- Strong stakeholder management skills with experience in client-facing roles
- Familiarity with Solana’s governance and improvement proposal process
- Experience in product development or technical sales
- Active participation in blockchain technical communities
Benefits
- Opportunity to shape the future of Solana’s infrastructure
- Competitive compensation package, including token allocation
- Remote-first work environment
- A one-off allowance upon joining to set up a home office
- Professional development opportunities
- Chance to work with cutting-edge technology and world-class engineers
GitLab is hiring a remote Assigned Support Engineer / Senior Support Engineer (EMEA). This is a full-time position that can be done remotely anywhere in EMEA.
GitLab - A single application for the entire DevOps lifecycle.
cainternmachine learningsan franciscous / remote
"
We’re building an autonomous engine for scientific discovery—an AI system that designs, plans, and learns how to learn. This role is for exceptional people who want to invent a better way to optimize products and generalize models over complex search spaces using reinforcement learning, Bayesian methods, and active experimentation.
You’ll be part of the core research team. No side projects. No throwaway intern work. You’ll be expected to think deeply, write clean code, and help us push the theoretical and practical boundaries of intelligent discovery systems.
What You’ll Work On
* Designing and implementing the core decision-making framework.
* Running experiments with internal ML models.* Evaluating performance, generalization, and uncertainty of models.* Coding mock environments for policy learning.Qualifications
* Strong mathematical foundation, with emphasis on probability theory, information theory, and optimization.
* Understanding of Bayesian reasoning and decision theory (e.g. expected utility, belief state modeling, POMDPs)* Experience with learning under uncertainty and active learning methods (e.g. Bayesian optimization) * Experience with planning and control algorithms (e.g. Monte Carlo Tree Search, multi-armed bandits such as UCB and Thompson Sampling, meta-RL)* Knowledge of modeling and generalization techniques, including surrogate modeling, inductive biases, and generalization in high-dimensional search spaces* Solid practical ML engineering and software engineering fundamentals (Python, PyTorch/JAX/TensorFlow, NumPy/SciPy)* Ability to mathematically formalize vague problemsBonus:
* Experience with BoTorch, GPyTorch, Pyro, Stan, or JAX.
* Experience with deep learning methods (e.g. VAE, transformers)* Prior research or open-source contributions in probabilistic inference, RL, or decision-making.* Strong performance in math/programming competitions or coursework (e.g. Putnam, IOI, ICPC).",
$98k – $210kdeveloper advocate
GitLab is hiring a remote Developer Advocate. This is a full-time position that can be done remotely anywhere in North America.
GitLab - A single application for the entire DevOps lifecycle.
$109.047k – $169.455kengineersre
Wikimedia Foundation is hiring a remote Senior Site Reliability Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
Wikimedia Foundation - The non-profit that operates Wikipedia.
developeriosmobile developerremote asia europe ukswift
CrazyGames.com is an HTML5 browser games platform with 40M monthly active users from countries around the world. In just a few years, we’ve grown from a hobby project to a team of 35 experts. CrazyGames is now expanding its reach and looking for a remote Mobile App Developer.
You will be working in a small, fully remote engineering team where you will build and enhance our mobile applications for both iOS and Android. CrazyGames is already used by millions of users daily, providing a massive audience for your work from day one. While skills across both platforms are valued, we are particularly seeking strong iOS expertise to complement our team’s current capabilities.
Key outcomes for the role:
- Within 1 month, you have a good understanding of the current architecture of the website and successfully built and shipped native features or enhancements within our mobile apps.
- Within 3 months, you have proactively identified and implemented a tangible improvement to mobile build pipelines, automated testing and development workflow, demonstrably saving time or reducing friction for the mobile development process.
- Within 6 months, you take ownership over significant mobile app features or modules (especially iOS-centric ones), managing them from scoping through development, testing, and release.
- Within 9 months, you propose architectural improvements to our mobile app codebase or the web-native integration layer, enhancing maintainability, performance, and future feature development.
On a typical day you might:
- Implement and refine both native and web UI elements and interactions based on designs for our iOS and Android apps.
- Develop and integrate native functionalities (e.g., push notifications, platform-specific APIs) that enhance the core PWA experience.
- Work on the bridge and communication layer between the web view and the native app shell.
- Propose and discuss mobile-specific user experiences and native integrations together with the designer, and product manager.
- Identify performance bottlenecks or areas for improvement in the mobile apps and refactor code or implement native solutions.
- Break down mobile-focused features or epics into specific tasks and discuss implementation strategies, especially for iOS, with the tech lead and team.
What we offer:
- Top-notch engineers as colleagues. We like to hire experts.
- A modern mobile development environment leveraging web technologies combined with native development (Swift for iOS, Kotlin for Android). Experience with bridging technologies is a plus.
- Your work directly impacts millions of users across the globe playing hundreds of millions of game sessions per month.
- A lot of responsibility and freedom. We hire only experts and trust them to deliver excellent results.
- Flexible working hours and location. The results are what count!
- Team weeks: we organize a week somewhere in Europe once or twice per year. We pay for transport and accommodation so you can have fun with the team.
- The opportunity to play games and claim it’s work.
Job requirements
Reach out if:
- You have demonstrable experience developing native mobile applications, with a strong focus and deep understanding of iOS development (Swift/Objective-C and core iOS frameworks). Experience with Android (Kotlin/Java) is a significant plus.
- You have experience with or are eager to learn more about React web development.
- You have experience working with or integrating web views (WKWebView/WebView) or PWAs within native mobile applications.
- You have experience optimizing mobile applications for responsiveness, and smooth user experience across various iOS devices and versions.
- You can think from the perspective of the mobile user and understand platform conventions.
- You have experience interpreting mobile analytics to drive development choices.
- You are intelligent, efficient, and organized. You have an attention to detail.
- You like open, efficient, and to-the-point communication and you have experience working effectively in a remote team.
- Bonus points for experience with web-to-native bridging technologies (like Capacitor or custom implementations) or cross-platform frameworks (like React Native, Flutter) even if not directly used here.
contractcrypto payengineerfull-timejavascript
P2P.org is the largest institutional staking provider with a TVL of over $6B and a market share exceeding 20% in restaking.
We are continually focused on researching and improving our infrastructure to extract maximum APR while enhancing security. For instance, in ETH and SOL, our NRR is on average 10% higher than the market, and in DOT, it’s 20% higher.
We also place significant focus and resources on launching new networks such as TON, Avail, Monad, Babylon, Story, Berachain, and others, along with yield products. From restaking, where we are the largest operator with a 20+% market share, to yield aggregators on stablecoins.
Our clients include BitGo, Copper, Crypto.com, Ledger, ByBit, Bitget, OKX, HTX, Bitvavo, SBI, and others, who choose us for our client-centric approach and extensive product line from unified API to widgets and custom dApps.
We are also actively expanding our product line, exploring RWA, data, yield, and service products for banks, exchanges, custodians, and wallets.
P2P.org unites talented iniduals globally ❤️
Despite our distributed team, we share a passion for decentralized finance - a fairer system for all. We code, learn, create, and connect to shape finance’s future 💰
P2P.org boasts a strong reputation and network. We prioritize customer satisfaction and, as tech enthusiasts, develop innovative solutions that bolster our brand.
You will 🚀
- Serve as the technical advisor for our institutional clients during sales and onboarding
- Conduct technical discovery and design tailored solutions using our staking APIs, SDKs, and platform tools
- Deliver live product demos, technical workshops, and architectural consultations
- Work cross-functionally with Engineering and Product to support complex integration flows
- Maintain technical documentation, integration playbooks, and POCs to accelerate time-to-market
- Translate customer feedback into actionable product insights
- Build trust and long-term relationships with key stakeholders (Product Managers, Technical Leaders, CTO)
You have 🤓
- Proficient in both written and spoken English and Mandarin
- 4+ years of experience as a Sales Engineer, Technical Lead, Engineering Manager, or similar technical client-facing role
- Strong communication skills with the ability to engage both technical and non-technical stakeholders
- Solid experience with APIs, Postman, SDKs, and scripting in TypeScript, JavaScript, or Python
- Experience preparing and delivering architecture diagrams, implementation proposals, and live demos
- A proactive, problem-solving mindset and the ability to take ownership of complex projects
Nice to have
- Blockchain, staking, or Web3 experience
- Familiarity with yield products, wallet integrations, or RWA concepts
- Experience with institutional custody flows and HSM integrations
- Exposure to staking protocols such as Ethereum, Solana, Polkadot, Cosmos
- Experience working in a regulated or security-sensitive environment
At P2P.org we have a team of experts with their own unique approach and ownership culture. Together we gain experience and make dreams come true! 🌟
- Full-time Contractor (Indefinite-term Consultancy Agreement)
- Competitive salary level in $ (we can also pay in Crypto)
- Well-being program
- Mental Health care program
- Compensation for education, including Foreign Language & professional growth courses
- Equipment & co-working reimbursement program
- Overseas conferences, community immersion
- Positive and friendly communication culture
P2P.org is committed to providing equal opportunities. All applicants will be considered without regard to race, color, national origin, religion, sex, sexual orientation, gender identity, veteran status, or disability.
engineerfull stack engineerproductremote polandsoftware engineer
Dropbox is hiring a remote Full Stack Product Software Engineer. This is a full-time position that can be done remotely anywhere in Poland.
Dropbox - Keep life organised and work moving – all in one place.
$100.8k – $161kengineerfull stack engineersoftware engineer
Headspace is hiring a remote Software Engineer, Full Stack. This is a full-time position that can be done remotely anywhere in the United States.
Headspace - The go-to self-guided meditation and mindfulness app.
Senior Full-Stack Engineer (Node.js + Next.js)
Location: RemoteWorking Hours: Must be available during U.S. business hours (until at least 3 PM ET)Compensation: Competitive salaryStart Date: ImmediateApplication Email: Send your resume to [email protected]About AMK Solutions
AMK Solutions is a software consultancy that helps fast-growing startups and established companies build reliable, scalable, and beautiful products. We are a tight-knit, remote-first team that values ownership, clear communication, and delivering quality software.
We're expanding our development team with experienced full-stack engineers who can work across both backend and frontend, contribute to large-scale systems, and collaborate effectively in a high-performance environment.
What You’ll Be Working On
We're hiring senior developers to help us deliver high-traffic web platforms that include real-time features, modern APIs, and mobile-friendly frontends. You’ll work on a shared repo using TypeScript, contributing across backend services (Node.js/Express) and frontend applications (Next.js/React).
You’ll collaborate closely with designers, product managers, and fellow engineers to ship features that are performant, scalable, and well-tested.
Responsibilities
Develop backend services using Node.js, Express.js, and TypeScript
Build and maintain RESTful APIs for user accounts, voting systems, and live updates
Create responsive web apps using Next.js, React, Tailwind CSS, and component libraries like ShadCN
Work with MongoDB and Mongoose for data modeling and queries
Implement authentication flows (email, social login, OTP) using Passport.js
Handle real-time communication with users using Socket.io
Set up background job processing with Redis and Bull
Contribute to shared frontend components for web and future mobile apps
Optimize performance, caching, and SEO rendering strategies
Requirements
5+ years of experience building full-stack applications at scale
Strong knowledge of Node.js, Express.js, and TypeScript
Proficiency in building frontend apps with React and Next.js (SSR/SSG)
Experience working with MongoDB, Redis, and job queues
Familiarity with Tailwind CSS and modular component libraries
Strong understanding of REST APIs, real-time updates, and background processing
Fluent in English, with excellent written and verbal communication
Must be able to work during U.S. business hours
Bonus Skills
Familiarity with React Native and the Expo ecosystem
Experience with integrations like Stripe, Typesense, or reCAPTCHA
Exposure to DevOps tools (Docker, AWS, Pulumi) is helpful, but not required
What We Offer
Competitive compensation
Fully remote team and flexible work culture
U.S. time zone alignment for collaboration
Opportunity to grow with a high-performing engineering team
To apply, send your resume to [email protected].
We’re looking for team players who write clean, tested code and take ownership of what they build.
Please mention the word HOTCAKES when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$30,000 — $40,000/yearBenefits
🌎 Distributed team
🏖 Paid time off
📚 Learning budget
full stack
Teracy is a presence app for remote workers and people who live apart — designed to help you feel close, even when far away. We’re rethinking what it means to live and work together online with depth, presence, and care.
About Teracy
We’re building a product that helps people truly share time and life together online, not just collaborate. No more cold tools for task management. We believe in designing software with soul, tools that enrich real human connection.
- Launched in Japan, used by startups, public companies, students, and communities (no ads or press)
- 1-week retention 80%, 30-day retention 72%
- Goal: 1M users by end of 2025 — 20K+ on the waitlist already
- Bootstrapped ($1.3M) + Pre-seed funded (~$1.7M raised)
- Preparing for global launch, starting with the US
What We’re Building
A multi-platform presence app for teams, communities, and the people who matter most
Teracy is not just another productivity app. It’s a reimagined layer for remote work and remote relationships — a product that redesigns presence in online life.
- “Shared presence” experience that lets people live together online
- Web / Desktop / Mobile with real-time interaction (WebRTC, LiveKit)
- Brand and UX relaunch coming in Summer 2025
- Built with React, Electron, Swift, Node.js
What We’re Looking For
You might be a fit if you:
- Feel frustrated with soulless tools or hyper-optimized culture
- Want to use your talent for something that makes life better
- Care deeply about people and software
- Have grit—been through hard things and came out stronger
- Value honesty, ownership, and shared growth
- Want to build something truly meaningful from the ground up
Requirements
Must-have:
- 5+ years experience or equivalent skill level
- Strength in either:
- Frontend: React / Electron
- Mobile: Swift (iOS)
- Backend: Node.js / Infra
- Comfortable working across platforms (Web, Mobile, Desktop)
- Experience in early-stage or cross-functional teams
- Fluent in async communication and fast feedback cycles
Nice-to-have:
- Tech lead or EM experience
- Cross-platform UI/UX experience
- Familiarity with LiveKit, WebRTC, or real-time systems
- Startup or founder-level product delivery experience
Compensation & Working Style
- Equity: Stock options or founder-level shares
- Location: Fully remote + optional offsite retreats
- Timezone: Any country — overlap with one of these:
- JP 9–13 / SF 17–21 / NY 20–24
- Tools: Slack, Notion, Figma, GitHub, Teracy
- Communication: Clear, async-first, written culture — work feels fun and connected, even remotely, on Teracy
Team & Culture
- Small team: 6 full-time (2 engineers + CPO who also codes = 3 devs), 1 intern
- Mostly Japan-based, moving to the US in 2025
- Cross-functional: design, engineering, product, growth
- Async-first but fast-moving
- Main language: English (with flexible Japanese use)
- We trust each other, take ownership, and move with care
More Detail
https://teracy.notion.site/Teracy-Introduction-EN-213a8897c4468089979fe40b0dedf48b?source=copy_link
Please mention the word SATISFYING when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$70,000 — $120,000/yearBenefits
🌎 Distributed team
⏰ Async
🏔 Company retreats
💰 Equity compensation
engineerremote australiatechnical support
Instructure is hiring a remote Customer Support Engineer. This is a full-time position that can be done remotely anywhere in Australia.
Instructure - Makes software that makes people smarter.
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Are you a talented Senior AI Engineer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.
What we offer:
- The rate depends on your skills and experience. We've already paid out over $11M to our engineers.
- No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
- We'll manually find the best project for you according to your skills and preferences.
- Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
- We respect your seniority so you can expect no micromanagement or screen trackers.
- Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
- We will support you from the time you submit the application throughout all cooperation stages.
- Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
- Through our community, we will connect you with the best developers from more than 50 countries.
Requirements - Senior AI Engineer:
- 3+ years of commercial experience applying AI to practical technology solutions
- A solid understanding of Python is a must; experience with other programming languages commonly used in AI is a plus
- Experience with AWS, GCP, or Azure is required
- Experience with large language models (LLMs) is mandatory
- 2+ years of commercial experience with OpenAI technologies is required
Requirements - Senior Python & LLM Engineer:
- 5+ years of commercial experience with Python.
- Experience with large language models (LLMs) is required.
- Experience with AWS, GCP, or Azure is essential.
Other Requirements:
- Strong technical skills: as a Senior Engineer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
- Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
- Strong self-organizational skills — ability to work full-time remotely with no supervision.
- Reliability — we want to trust you and expect that you won’t let us and the client down.
- Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.
Sounds good for you? Apply now and join the Lemon.io community!
NOT YOUR TECH STACK?
We have different projects for Senior Full-Stack Developers, so if you have 4+ years of commercial experience in software development and you are fluent with React & Python, Ruby & React, UI & UX, Blockchain, WordPress & Figma, Svelte & TypeScript, Svelte & Node, Svelte & Python, Shopify & JavaScript, we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you.
If your experience matches our requirements, be ready for the next steps:
- VideoAsk — watch a short video about our startup, up to 10 minutes
- Complete your profile on our website
- 30-minute screening call
- Technical interview
- Feedback
- Magic Box (we are looking for the best project for you).
P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, the U.S., Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), Canada, and the UK. However, we have some exceptions.
At the moment, we don’t have a legal basis to accept applicants from the following countries:
- European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
- Latin America: Cuba and Nicaragua
- Most Asian countries and Africa.
We expand and shorten the list of exemptions regularly.
Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.
Please mention the word EXCELS when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$60,000 — $180,000/yearBenefits
🌎 Distributed team
⏰ Async
👀 No monitoring system
🚫 No politics at work
🎅 We hire old (and young)
crypto paydockerengineerfull-timegolang
About Vac
Vac builds public good protocols for the decentralised web. We do applied research based on which we build protocols, libraries and publications.
The role
We are seeking an experienced Distributed Systems Evaluation Engineer to join the Vac DST team. This role focuses on rigorously assessing the performance and reliability of IFT projects at scale. You’ll be responsible for designing and executing comprehensive evaluation strategies, leveraging both large-scale lab deployments and protocol behaviour modelling scripts. Your expertise will be crucial in analysing these complex distributed systems, automating intricate test scenarios, and providing in-depth insights into system behaviours.
Working closely with cross-functional teams, you’ll troubleshoot complex issues and translate technical data into actionable recommendations. Proficiency in containerisation, cloud technologies, and distributed systems principles is essential.
This position offers the opportunity to make a significant impact on the robustness and scalability of IFT projects, contributing to the development of next-generation decentralised technologies.
Key responsibilities
- Design, implement, and maintain sophisticated tools for analysing distributed systems at scale, ensuring robust and efficient testing processes.
- Orchestrate and automate large-scale deployments to rigorously validate the functionality, performance, and scalability of complex distributed systems.
- Identify, document, reproduce, and troubleshoot intricate issues in distributed environments, collaborating closely with IFT project teams to resolve challenges.
- Develop a comprehensive understanding of IFT project protocols and components to provide insightful analyses that drive improvements and inform decision-making.
- Create and maintain scripts that model protocol behaviour, utilising these models to validate and sanity-check large-scale deployment runs.
- Work with Docker, Kubernetes, and POSIX-like systems
- You ideally will have
- Solid experience with scripting languages like Python.
- Experience with statistical analysis tools, like pandas, seaborn.
- Experience with systems programming languages like Nim, Go, Rust.
- Understanding of network behaviours (libp2p, gossipsub, p2p networks).
- Working knowledge of Docker, Kubernetes, and POSIX-like systems.
- Excellent written and conversational communication skills.
- Alignment with our core values and principles.
Bonus points
- Experience with off-the-shelf networking stacks such as libp2p.
- Experience in blockchain technology.
- Experience working for an open-source organisation.
- Hiring process
- Interview with our POps team
- Interview with team member from the Vac DST team
- Take home assignment & interview with team member from the Vac DST team
- Interview with Vac team lead
Compensation
The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.
DV Labs is building the next generation of distributed validators to make Ethereum staking more resilient, decentralized, and secure.
Our software allows groups of operators—large and small—to collaboratively run a single validator while minimizing single‑point‑of‑failure risk and maximizing client ersity. We are a venture‑backed, remote‑first team that values open‑source ethos, long‑term thinking, and empirical decision‑making.
We’re looking for a product‑minded Full‑Stack Engineer who can take UI/UX ideas, wire them to backend services, and ship features that help operators run distributed validators with confidence.
You’ll work closely with protocol & infra engineers, pulling consensus‑layer telemetry that our analytics team already prepares, and surfacing it through APIs and dashboards that delight end users.
Responsibilities
- Build end‑to‑end features with Next.js (React/TypeScript) on the front‑end and NestJS(Typescript) on the back‑end.
- Query ClickHouse and MongoDB to consume outputs from existing analytics pipelines; transform & expose that data via REST endpoints and typed client SDKs.
- Integrate consensus‑layer insights (beacon duties, attestation stats, slashing alerts) so stakers understand their validator health.
- Interact with deployed Solidity smart contracts using viem/ethers.js/web3.js to read on‑chain state or submit transactions (e.g., validator registration, withdrawal credentials updates).
- Automate testing & deployment with GitHub Actions and serverless hosting on Vercel.
- Contribute to technical road‑mapping, architecture reviews, and RFCs in our open, async‑first culture.
Requirements
- 4+ years building production full‑stack web applications.
- Advanced TypeScript skills across React and Node.js.
- Demonstrated experience designing & consuming REST APIs.
- Ability to query and optimise ClickHouse or another analytic DB, plus familiarity with MongoDB.
- Working knowledge of the Ethereum consensus layer (Beacon Chain duties, attestations, slashing conditions).
- Proven experience interacting with deployed Solidity contracts (reading state, sending signed transactions, gas estimation, event parsing).
- CI/CD mindset; you automate workflows with GitHub Actions (or similar) and treat infrastructure as code.
- Strong testing discipline: unit, integration, and E2E where it matters.
- Excellent written communication; comfortable in an async, globally distributed team.
Nice to have
- Experience with SQL
- Exposure to GraphQL (Apollo Server/Federation) — some internal services use it.
- Contributions to Ethereum client code, staking protocols, or DV research (Lido, DVT).Experience with p2p networking stacks (libp2p, gRPC) or BFT systems.
- Familiarity with container orchestration (Kubernetes) and infrastructure‑as‑code (Terraform).
- Go proficiency (many beacon‑chain tools use them).
- Data‑visualisation skills (D3.js, Recharts) for rich dashboards.
About the team - How we work?
- Async‑first: proposals & design docs precede meetings.
- Small, senior team: high trust & ownership.
- Open‑source by default: most code and discussions are public.
Our Values
- Synergistic
- Secure
- Innovative
- Reliable
Compensation
- Competitive salary in dollars
- Full remote company - Work from wherever you want
- Possibility to attend to relevant Conferences
- 2 Recharge weeks at the end of the year
- Equipment budget
Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together.
Best of luck!
dataengineerethereumfull-timepython
DV Labs is building the next generation of distributed validators to make Ethereum staking more resilient, decentralized, and secure.
Our software allows groups of operators—large and small—to collaboratively run a single validator while minimizing single‑point‑of‑failure risk and maximizing client ersity. We are a venture‑backed, remote‑first team that values open‑source ethos, long‑term thinking, and empirical decision‑making.
We are searching for a dedicated Data Engineer to design, build, and own the data platform that powers product decisions, validator‑performance analytics, on‑chain research, and community transparency.
Responsibilities
- Ingest & model Beacon‑chain data — blocks, attestations, sync‑committee aggregates, deposits, and slashings—into ClickHouse and MongoDB at multi‑TB scale.
- Develop scalable ETL/ELT pipelines in Apache Spark (PySpark/Scala) orchestrated via GitHub Workflows and containerized CI/CD.
- Implement columnar schemas & partition strategies to achieve sub‑second analytical queries and reduce storage footprint.
- Expose clean, version‑controlled datasets & metrics to internal stakeholders through APIs, dashboards, and notebooks.
- Collaborate with Protocol & DevOps teams to surface validator health, slash‑risk events, and protocol‑level anomalies in real time.
- Own data quality, lineage, testing, and documentation across the stack; champion best practices and continuous improvement.
- Contribute to open‑source tooling around consensus‑layer data, distributed‑validator monitoring, and Ethereum research.
Requirements
- 2+ years of professional experience in data engineering or high‑performance backend roles.
- Production expertise with ClickHouse and Apache Spark on multi‑terabyte datasets.
- Hands‑on experience operating MongoDB for semi‑structured/operational workloads.
- Proficiency in Python (pandas/PySpark) and/or Scala; solid Git and CI/CD habits (GitHub Actions/Workflows or similar).
- Deep understanding of the Ethereum consensus layer (Beacon chain architecture, validator lifecycle, slashing conditions, client ersity—Lighthouse, Prysm, Teku, etc.).
- Comfortable working in a remote, asynchronous startup environment with high ownership and autonomy.
Nice to have
- Familiarity with Ethereum execution‑layer JSON‑RPC, MEV‑Boost, and block‑building economics.
- Experience operating distributed systems on Kubernetes, Nomad, or similar orchestrators.
- Fluency in Python.
- Exposure to data‑observability stacks (dbt, Great Expectations, Dagster) and time‑series monitoring (Prometheus/Grafana).
- Prior contributions to web3 or other open‑source projects.
About the team - How we work?
- Async‑first: proposals & design docs precede meetings.
- Small, senior team: high trust & ownership.
- Open‑source by default: most code and discussions are public.
Our Values
- Synergistic
- Secure
- Innovative
- Reliable
Compensation
- Competitive salary in dollars
- Full remote company - Work from wherever you want
- Possibility to attend to relevant Conferences
- 2 Recharge weeks at the end of the year
- Equipment budget
Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together. Best of luck!
Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together.
Best of luck!
Updated about 19 hours ago
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