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About Chainlabs

Chainlabs is a data startup focused on enabling web3 analytics. We specialize in identifying blockchain address ownership and tracking addresses linked to illicit activities. Our work supports industry leaders like Nansen, Chainalysis, and Arkham in their wallet labeling efforts.

Our primary clients include anti-money laundering (AML) service providers, as well as law enforcement, traders, and academic researchers. Backed by Lunar Rails (200 employees), Chainlabs maintains the agility and independence of a startup while benefiting from financial stability and strong industry connections.

Position Overview

We are seeking a Senior Back End Engineer to develop key data pipelines, including web scrapers, ETL workflows, and AI agents. Your work will enable us to extract critical data from clearnet and darknet platforms and power our blockchain intelligence solutions.

In this role, you’ll design high-performance systems that move data seamlessly into PostgreSQL and BigQuery environments. By tackling complex challenges in web scraping and data engineering, you’ll help us collect, organize, and analyze the web3 ecosystem at scale.

Key Responsibilities

Web Scraping**:

• Design and deploy web scrapers to extract data from complex websites like Etherscan, Arkham, ChainAbuse, etc.
• Implement data collection mechanisms with support for IP rotation, CAPTCHA handling, and dynamic content rendering.
• Help us build Crawlers and Scrapers to find hidden web3 wallets on the Darknet.

Data Engineering**:

• Build and maintain ETL pipelines to ingest scraped data into PostgreSQL or Bigquery.
• Classify the collected web3 wallets into predefined categories (e.g., Swap, Bridge, Scam, Ransomware) according to our taxonomy definitions.

API Maintenance**:

• Maintain and enhance Chainlabs API endpoints to provide seamless access to the data.
• Utilize Python frameworks (e.g., Flask) to support and extend RESTful APIs.

Data Analytics**:

• Use SQL to analyze on-chain data, ie, the behavior of collected wallets, their interaction with other entities, and other on-chain trends

Requirements

• Proficiency in Python for data engineering, web scraping, API development; and databases like PostgreSQL.
• Experience with frameworks such as Scrapy, Selenium and BeautifulSoup.
• Understanding of advanced Web Scraping techniques, including IP rotation, proxy management, and CAPTCHA handling.
• Familiarity with modern AI models, APIs, and SDKs (e.g. OpenAI, LLMs).
• Hands-on experience with ETL orchestration tools like Apache Airflow
• Strong problem-solving and not afraid to work with a wide variety of data.
• Ability to work independently and meet deadlines in a remote environment.
• A passion for blockchain and web3 technologies. An interest in combatting financial cybercrime.
• *Nice to Have: Familiarity with RESTful API development using_ Flask framework.
• Nice to Have: Strong experience with SQL and some exposure to Javascript.
• Nice to Have: Experience with on-chain analytics

Benefits

• Competitive salary.
• Remote work environment with a flexible schedule.
• A team that values data and AI; our founder is a data scientist.
• A company culture that values transparency, speed, courage, and curiosity.
• Opportunities for fast personal and professional growth.
• Exposure to a global network of industry experts and partners.

QuickNode is looking to hire a Support Engineer II to join their team. This is a full-time position that can be done remotely anywhere in Portugal or Spain.

*About CoW DAO

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

About the role**

Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time

Please note we’re not hiring from the US, Australia, or New Zealand.

Position: Full-time contractor

We are looking for an enthusiastic, self-motivated, Senior Backend Engineer to help us build the next generation of decentralised trading protocols. As a dedicated backend engineer, you will gain ownership of our existing backend services and influence the creation, design, and execution of future features and products. You will work on technically challenging aspects of our off-chain services and our developer-facing APIs and help ensure the delivery of reliable and performant features to improve CoW Protocol.

Our Tech Stack

• Backend Code: Rust, Tokio, Cargo, Git (https://github.com/cowprotocol/services)
• Infrastructure: Pulumi, AWS, Docker, Kubernetes, Grafana, Prometheus, Elasticsearch
• Other codebases: Typescript, Python, Solidity

What you will do

• Architect and design our off-chain services (core auction protocol as well as the orderbook) to support feature growth and the rapidly changing requirements that come from being an application on a constantly evolving blockchain.
• While your focus will be writing concurrent backend systems in Rust, you will also interact with our Smart Contracts written in Solidity and develop your understanding of auction mechanisms and DeFi protocols
• Participate in our on-call rotation to help ensure the reliability of our production systems (on-call work is additionally compensated)
• Work closely with researchers and the product team to ship features and come up with new solutions for challenging technical problems
• Deliver high-quality code for features from concept until production (including state-of-the-art monitoring of our production systems)
• Give thoughtful and in-depth code reviews of your colleagues’ contributions to our open-source codebase

Who you are

• You have 5+ years of production experience with systems-level programming languages, with at least 1+ year of hands-on production experience using Rust
• You have practical experience working in web3 (ideally in DeFi and the Ethereum ecosystem)
• You have excellent computer science, programming, and algorithmic skills
• Experience with operating, maintaining, and architecting complex software systems
• You care deeply about the quality, readability, observability, and testability of your code
• You proactively give technical direction to improve performance, prevent issues, optimise data usage, and refactor the codebase
• You are a team player, strong communicator, and gladly share your expertise with others
• You collaborate effectively with a remote-first team on a large, open-source codebase
• Ideally, someone senior who can mentor colleagues and provide direction.
• You are excited to explore and gain experience with Ethereum

What we can offer you

• Flexible work environment: Join our hub in Lisbon or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
• Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
• Learning budget: Use our learning budget to support your higher ambitions
• Hardware budget: Take advantage of a hardware budget for acquiring necessary equipment
• Make an impact: You are joining a startup where you can make a huge difference. Your work matters!
• Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
• Flexible work and vacation times: Prioritize work-life balance through our robust flexible work policy and vacation allowance
• Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your inidual growth

Referral Program

Earn 6.000 USDC or USD with the refer-to-earn program. More details here.

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our erse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

Title: QA Manager – Consumer Complaint & Adverse Events

Location: Remote (United States)

Job Description:

#KeepGrowing with Nutrafol

Come grow with us. We’re a growing company. Everything we do, we do to help people grow into the best version of themselves.

As the pioneers of hair wellness, we create natural, clinically effective solutions for hair growth and provide support for people at every step of their hair journey. Our multi-factorial approach targets the root causes of hair thinning using a patented blend of medical-grade botanicals — and is recommended by over 3,000 physicians and hair professionals for trusted, reliable results.

We never settle, and are continuously challenging existing treatments and methodologies to advance the frontier of hair science. As we help our customers grow, we grow too — by embracing iniduality and differences, leading by example, and empowering ourselves and others with our passion for wellness and innovation.

Keep growing. It’s our mantra. Our commitment to helping anybody and everybody committed to realizing their own potential to grow.

About You

As Quality Assurance Manager for NUTRAFOL, you will be responsible for leading the Consumer Complaint/Adverse Event Management Program. In support of the growing platform of products and formats spanning the business portfolios, you will bring deep expertise and experience in the dietary supplement and cosmetic categories and have strong knowledge and experience in ensuring adverse event compliance in adherence to FDA guidelines and regulations. This expertise will enable NUTRAFOL to continue to grow as a competitive and agile business in the categories that it operates within.

You will be responsible for executing end-to-end adverse event management support that will help grow and protect the business. This role reports directly into the Director, QA.

Responsibilities:

• Management of the Consumer Complaint, Adverse Event Program
• Ensure consumer contact follow-ups are conducted using appropriate questions as required
• Review adverse events to determine if they are potentially serious
• File serious adverse event reports with FDA as required for dietary supplements and cosmetic products
• Complete adverse event assessments and investigations
• Track and trend adverse events on a monthly and quarterly basis
• Monitor metrics and KPIs (key performance indicators)
• Work closely with 3rd party medical advisor/PV vendor as required
• Support the implementation of a consumer complaint, adverse event management database.
• Gather in-depth adverse event information to address specific inquiries from colleagues and collaborators.
• Ensure the consumer complaint, adverse event program is prepared for internal and 3rd party audits as well as regulatory inspections.
• Participate as an effective member of cross-functional teams.
• Demonstrate ability to lead in a collaborative environment with a positive leadership style and a hands-on approach that emphasizes teamwork, collaboration, motivation, and consensus and team building.
• Perform management tasks for the team, which include conducting reviews, maintaining team motivation and iding the workload among team members.
• Assists with ad hoc projects as required.

Requirements:

• Bachelor’s degree in quality assurance, science, medical sciences, pharmacology etc.; or an equivalent combination of education and experience sufficient to successfully perform the key accountabilities of the job required.
• 5+ years of direct US dietary supplement/Consumer Healthcare Quality experience within a wellness/supplement brand.
• Well versed and knowledgeable regarding US FDA guidelines and regulations for handling consumer complaints, especially for dietary supplements and cosmetic products.
• Hands-on experience in adverse events compliance and GMP standards.
• Experience executing QA GMP compliance for a broad portfolio of dietary supplements, cosmetics or related products.
• Effectively prioritized and completed multiple projects in an agile and fast-paced environment.
• Proven ability to communicate and collaborate effectively with a variety of audiences, both internal and external.
• Consistently demonstrated a professional, positive, and approachable attitude.
• Strong analytical, organizational and critical thinking skills.
• Demonstrates team player mentality with ability to work independently.
• Self-motivated with critical attention to detail, deadlines, and reporting.
• Excellent English written and verbal communication skills.

Nutrafol takes into consideration a wide range of factors in final compensation decisions, including but not limited to: skill sets, experience and training, licensure and certifications, qualifications and education, and other business and organizational needs. The listed range is applicable only to the annual base salary and does not include additional perks, benefits, or applicable bonus eligibility comprising the total compensation package.

Salary Range:

$110,000 – $130,000 USD

Perks & Benefits

• Fully remote work experience
• Comprehensive medical, dental, and vision package, including FSA program
• 401K with 50% match
• Quarterly Bonus Program
• Flexible PTO
• Two company-wide wellness breaks every day
• Free lunch on us every Tuesday and Thursday via Seamless/Grubhub
• Monthly wellness stipend
• Monthly internet stipend
• Monthly cell phone stipend
• Annual learning & development stipend
• Wellness Program, including virtual Wellness Sessions & No-Meeting Wednesdays
• Free meditation app membership (Headspace)
• Free Nutrafol subscription
• Pet insurance and benefit programs

QA Automation Engineer

Technology

Remote, United States

Defines, develops, maintains, and executes the automation of test scripts utilizing Selenium framework for IT projects and/or maintenance items within an Agile environment. Strives to ensure that User Stories and/or system requirements are satisfied for internal and external application users. Ensures project and release testing is complete and testing risks are identified prior to implementation. Manages defects from identification to closure through the Software Development Life Cycle.

Job Responsibilities

• Defines, develops and maintains automated test scripts in Selenium framework. Reviews automated test scripts and provides feedback to other team members including off-shore members.
• Independently executes automated test plans and test scripts based on planned project schedules and in accordance with QA methodology.
• Proactively escalates issues to the QA Manager and alerts the project team on potential impact to test or release schedule.
• Records and tracks defects uncovered during the execution of tests scripts. Drives defect towards resolution; proposes and designs retest cases, scripts and data. Contributes to the defect management: defect status, root cause, daily triage meeting.
• Provides timely and accurate status defect information and appropriate metrics to facilitate QA reporting. Reports inidual status: dashboard information, open issues, risk analysis.
• Participates on Testing Production Support though rotating on-call responsibilities. Provides consistent and uninterrupted testing service to the organization and minimizes risk of systems down time.
• Reviews requirement specifications, or user stories and provides input during requirements and specification walkthroughs.
• Develops and executes SQL queries.
• Contributes to the development of the automated test plans and project testing approach. Contributes to the development of project and release Test Plan documents. Understands and contributes to the process of test estimates, project and release schedules.
• Participates in automation test planning, test case design and test script walkthroughs with project/scrum teams. Understands automated testing to be accomplished and suggests changes for efficiencies within or between projects. Actively participates and contributes to the QA Automation Test Design.
• Adheres to established automation standards and methodologies. Utilizes automation tools and methodologies to improve inidual effectiveness and to increase efficiencies in the QA process.
• Develops and sustains appropriate relationship with peers and other project team members.
• Assists with the evaluation of Software Test and Automation tools and contributes to the Test Tool Evaluation report.

Requirements (Education & Experience)

• 1+ years of experience with Selenium/QTP
• 1+ years of application development experience, preferable with Net, ASP, Java, C#, C++, PL/SQL or Visual Basic
• 1+ years of source code control experience
• Minimum of 2-4 years experience in developing and implementing business applications or in Quality Assurance
• Bachelors Degree or equivalent relevant work experience and training/education

Skills (Software, Soft Skills, KSAs)

• Ability to work on most phases of fairly complex application assignments understanding project lifecycles
• Competency in a variety of software tools and languages
• Excellent team member, good judgment and the ability to work effectively with a erse workforce
• Excellent verbal and written communication skills
• Strong analytical, problem solving and planning ability, detailed oriented, observational.
• Ability to multi-task to accomplish workload efficiently, excellent time management.
• Good work ethic and general business acumen
• Knowledge of system development lifecycle. Knowledge of automation test engineering methodologies
• Working knowledge of automation testing concepts, verification and validation techniques, defect management, quantitative methods, risk management and measurement programs
• Understanding of relational database principles, client/server infrastructure, and n-tier architecture concepts
• Working knowledge of defect tracking, quality principles and testing tools
• Knowledge of Sybase, Oracle, Web and Middle tier testing
• Focusing on business results

The salary range for this position is $80,000 – $102,000; commensurate salary to be determined based on skills, professional background and expertise. This position is also eligible, pursuant to applicable eMoney policies, for the annual bonus program, retirement contributions, health insurance, sick leave, parental leave and paid time off.

Title: Senior QA Automation Engineer (Remote)

Location: Albany NY US

Type: Full-Time

Category: Software Development

Job Description:

Transact and CBORD have joined forces as industry leaders to bring the best integrated technology solutions to education, healthcare, and business campuses worldwide. Be a part of this exciting new partnership, committed to transforming organizations and improving the lives of people doing mission-critical work.

We are currently searching for qualified candidates for Senior QA Automation Engineer. Please see the details for the position below.

Title: Senior QA Automation Engineer

Location: Albany, NY or Remote within the US

Key Responsibilities:

• Driving the software quality assurance lifecycle within Agile processes
• Design and coordinate test strategies and plans with development/product teams
• Designing and implementing test plans and cases
• Developing and maintaining mobile test automation frameworks
• Executing automated UI and functional tests on real devices and emulators
• Review daily test results, report and track issues
• Enhance and maintain automated CI flows
• Troubleshoot issues in systems under test
• Raise the bar for test automation coverage, reduce code complexity, increase CI/CD automation, and improve upon on quality metrics
• Work in a team environment using Agile project approaches (Scrum)
• Participate in peer code reviews
• 5+ years of experience in software development or QA automation
• Proficiency in mobile/web application testing
• Experience with programming languages such as Java, Groovy, Ruby, Python, or JavaScript
• Familiarity with Appium or Selenium WebDriver, and testing frameworks like TestNG, JUnit, or Cucumber
• Comfortable using Git, and experienced with CI tools like Jenkins, and test management tools like JIRA
• Knowledge of SQL/NoSQL databases
• Fluency in written and spoken English
• Experience in native mobile testing frameworks (XCUITest, UIAutomator, Espresso) or micro-services architecture
• A bachelor’s degree in computer science or related field of study or equivalent experience is preferred.

Must Have Experience:

• 5+ years of experience in software development or QA automation
• Proficiency in mobile/web application testing
• Experience with programming languages such as Java, Groovy, Ruby, Python, or JavaScript
• Familiarity with Appium or Selenium WebDriver, and testing frameworks like TestNG, JUnit, or Cucumber
• Comfortable using Git, and experienced with CI tools like Jenkins, and test management tools like JIRA
• Knowledge of SQL/NoSQL databases
• Fluency in written and spoken English

Preferred Skills:

• Experience in native mobile testing frameworks (XCUITest, UIAutomator, Espresso) or micro-services architecture
• A bachelor’s degree in computer science or related field of study or equivalent experience is preferred.

This job description is not designed to contain a comprehensive listing of activities, duties, or responsibilities that are required. Nothing in this job description restricts management’s right to assign or reassign duties and responsibilities at any time.

Base salary offers for this position may vary based on factors such as location, skills, and relevant experience. Some positions may include additional compensation in the form of bonus, equity, or commissions.

If you are a full-time salaried or hourly worker, we offer the following benefits: Medical, Dental, Vision, Life Insurance, Matched 401(k), Wellness Program, Short-and Long-Term Disability, Charitable Contribution Match, Holidays, Personal Days & Vacation, Paid Volunteer Time Off, and more.