Full-stack work is judgement across the whole system. AI systems need developers who can review how a model builds front to back.
This isn’t advisory work and it isn’t labelling. You’re reviewing real engineering work and explaining your judgement clearly enough that an AI can learn from it — paid for your expertise, by the hour.
Applied Clinical Judgement connects qualified people to vetted platforms, and Sean Key personally vouches for those he refers. We’re paid a referral fee by the platform on a successful placement — never by you. The roles below are live today.
40 live Web & Full-Stack Developers roles · updated daily
Software Engineer (AI-Native Platform & Integrations)
£55–£87 hourly via Cincinnatus. Full-stack engineer needed to build an AI-native platform replacing spreadsheet workflows with real-time dashboards and agentic capabilities. You'll own platform foundations, integration layers, analytics surfaces, and pilot launch across backend and frontend. Suited to pragmatic engineers comfortable shipping end-to-end SaaS products, designing scalable integrations, and leveraging AI development tools effectively.
Frontend Engineer Talent Network
Mercor seeks experienced frontend engineers for its expert network, paying $70–$150 per hour on a contract basis. You'll train and evaluate AI models, create real-world engineering tasks, and provide feedback to advance frontier research. Work flexibly remote, 15–30 hours weekly, if you have strong JavaScript framework experience (React, Vue, Angular), responsive design skills, and independent work habits.
Full-Stack Engineer Talent Network
Mercor's Full-Stack Engineer Expert Network offers $70–$150 per hour for remote contract work on AI research projects. Suited to experienced full-stack developers comfortable with React, Angular, Vue, Node.js, Django, Spring, and both relational and NoSQL databases. Work involves training and evaluating AI models, creating real-world engineering tasks, and providing specialist feedback. Typical commitments range from 15–30 hours weekly, with flexible scheduling.
Software Engineer, Financial Platform
Full-time remote role with base salary $140,000–$160,000 USD, plus equity and performance bonuses. micro1 seeks a Software Engineer to design and build scalable financial technology systems. You'll work across fullstack applications using Node.js, React.js, Next.js, and PostgreSQL on AWS infrastructure. Requires 5+ years professional development experience with recent hands-on work in both frontend and backend, plus proven shipping of production code in the past year.
Software Engineer, micro Platforms
Full-time fullstack software engineer role on micro1's internal platforms team, paying $180,000–$250,000 annually. You'll own end-to-end systems powering operations and AI infrastructure, working with TypeScript, React, Node.js and PostgreSQL. Requires production fullstack experience and PST timezone overlap. Suited to engineers comfortable in fast-moving environments who want high ownership of critical internal tooling.
Software Engineer (Human Data Platforms)
$50–$70 per hour for a full-stack software engineer to build data infrastructure on micro1's platform. You'll ship APIs, UIs, and data pipelines supporting model evaluation and secure document workflows. The role demands Python/FastAPI and React expertise, with experience across cloud platforms, SQL, and async systems. Requires 6–8 hours daily PST overlap. Suits senior builders comfortable owning problems end-to-end in small teams.
Software Engineer
Contractors earn $40–75 per hour on micro1, paid per completed task meeting specifications. This role suits experienced software engineers with 3+ years' hands-on backend or full-stack experience who can reason through unfamiliar codebases and explain technical decisions clearly. You'll build reinforcement learning environments that test AI systems' ability to identify and fix security vulnerabilities, create features, refactor code, and optimise performance. Cybersecurity or SecOps background is preferred.
Fullstack Engineer
This remote contractor role on micro1 pays $60–$110 per hour. You'll develop scalable fullstack solutions to train AI systems, working on frontend and backend code, API design, and optimisation. The role suits engineers with proven experience across the stack and strong problem-solving skills. Prior AI experience is not required; domain expertise is valued instead.
Software Engineer
Remote contractor role paying $50–$100 per hour via micro1. Requires four years' software engineering experience with strong Java, JavaScript, and Python skills. You'll design and optimise backend and frontend systems, develop RESTful APIs, maintain SQL databases, and champion clean code practices within Agile teams. Domain knowledge matters more than AI experience. Distributed systems and full-stack exposure preferred.
Senior Software Engineer (Typescript)
Micro1 seeks a senior full-stack engineer at $50–$100 per hour for remote full-time work. You'll design and deploy scalable TypeScript applications whilst helping train AI systems. The role requires four years' experience with Node.js, React, microservices architecture, and cloud platforms. You'll lead code reviews, mentor engineers, and optimise distributed systems. Domain expertise matters more than prior AI experience.
Fullstack Engineer (Python+React)
Fullstack engineer role paying $50–$100 per hour on micro1. Design and build production web applications using Python, React, Django and Flask, working with relational databases, Docker and CI/CD pipelines. No AI experience required. Suits developers with strong backend and frontend skills who can work independently in remote, collaborative teams and prioritise code quality and clear communication.
Front-end Developer (Typescript)
Contractor role on micro1 paying $30–$80 per hour. Front-end developers with expert Typescript, JavaScript, HTML and CSS skills are needed to build and optimise scalable web components for AI training systems. The work involves API integration, testing automation, code quality focus, and cross-team collaboration in a distributed environment. No AI experience required.
UI Developer
Contractor role at $30–90 per hour on micro1. Seeking a UI Developer with 4+ years' experience to build responsive, accessible interfaces using React and TypeScript. You will convert Figma designs into pixel-perfect components, integrate REST APIs, and collaborate with designers and engineers. The role demands strong HTML5, CSS3, and performance-tuning expertise, plus commitment to web accessibility standards and clean code practices.
Frontend Developer - (HTML,CSS)
Micro1 offers $30–$80 per hour for remote frontend developers to train AI systems using real-world expertise. You'll convert design files into responsive UI components with React, Angular, or Vue.js, integrate APIs, and optimise performance. No AI experience needed; strong HTML, CSS, and JavaScript skills are essential. Ideal for developers comfortable with modern frameworks and scalable component architecture.
Senior Frontend Developer (Javascript)
Micro1 seeks a Senior Frontend Developer at $30–$80 per hour on a contractor basis. You'll design and optimize sophisticated JavaScript applications using modern frameworks, mentor junior developers, and help train AI systems through high-quality real-world input. The role requires extensive web application experience, expertise in React or similar frameworks, and proven architectural leadership. Remote, distributed team environment.
Software Engineer (ElectronJS)
micro1 seeks a Software Engineer with 3+ years' desktop application experience to architect cross-platform Electron.js productivity software for macOS and Windows. You'll design real-time timekeeping systems, implement system-level signal collection with privacy safeguards, and develop offline-first data pipelines. Strong TypeScript, Node.js, and performance optimisation skills essential. Full-time remote role with base salary $130,000–$160,000 USD plus equity and benefits.
JavaScript / TypeScript Full-Stack Developer
Turing seeks JavaScript/TypeScript full-stack developers for remote contractor work with US-based AI companies. You'll design and maintain code for AI model training and optimization, conduct model evaluations, rank responses, develop datasets for supervised fine-tuning, and collaborate on RLHF initiatives. Requires a bachelor's degree in engineering or computer science (or equivalent), demonstrable web application development experience, proficiency in JavaScript ES6, and experience with Node.js, React, Angular, Vue, or Nest.js. Minimum 20 hours weekly; flexible commitment options available.
Python + Full-Stack (JS) Developer
Turing seeks Python and full-stack JavaScript developers to build AI training solutions for US-based companies. The contractor role involves designing code for AI model optimisation, conducting model evaluations, creating datasets for supervised fine-tuning, and collaborating on RLHF processes. Minimum 20 hours weekly with 4-hour PST overlap required. Bachelor's degree in engineering or computer science (or equivalent) and Docker proficiency mandatory.
Senior Full Stack Engineer
Contractor role paying $30–$90 per hour on micro1. Senior full-stack engineers with 3+ years' experience in NodeJS, TypeScript, Python, JavaScript and Java are needed to build and maintain web applications supporting AI training. The work involves both backend and frontend development, code review, and cross-functional collaboration. No prior AI experience required; domain expertise in software engineering is the focus.
Javascript Developer
Contractor role paying $30–$90 per hour on micro1. Javascript developers with expertise in modern frontend frameworks will help train AI systems by designing and optimizing web applications. The position suits experienced developers comfortable with remote work, mentoring peers, and advocating for clean code practices. No prior AI experience required.
Angular Developer
Earn $30–$90 per hour as a contractor evaluating Angular codebases to improve AI model training. You'll critique real-world front-end development, apply expert knowledge in RxJS and SCSS/SASS, and provide detailed feedback on software engineering tasks. Suits experienced Angular developers who can work independently and communicate findings clearly. Offered through micro1.
Senior Full Stack Engineer
Contractor role paying $30–$90 per hour on micro1. Senior full-stack engineers with 3+ years' experience in NodeJS, TypeScript, Python, JavaScript and Java are needed to build and maintain web applications supporting AI training. The work involves both backend and frontend development, code review, and cross-functional collaboration. No prior AI experience required; domain expertise in software engineering is the focus.
Software Engineer
Contractors earn $40–75 per hour on micro1, paid per completed task meeting specifications. This role suits experienced software engineers with 3+ years' hands-on backend or full-stack experience who can reason through unfamiliar codebases and explain technical decisions clearly. You'll build reinforcement learning environments that test AI systems' ability to identify and fix security vulnerabilities, create features, refactor code, and optimise performance. Cybersecurity or SecOps background is preferred.
Shopify Expert
$50–$70 per hour. Mercor seeks contractors with hands-on experience deploying and configuring Shopify's agent platform. The role suits e-commerce technologists and developers familiar with Shopify's automation tools. Work involves applying practical knowledge of Shopify agent functionality to support implementation and optimisation tasks.
Senior Full Stack Engineer
Contractor role paying $30–$90 per hour on micro1. Senior full-stack engineers with 3+ years' experience in NodeJS, TypeScript, Python, JavaScript and Java are needed to build and maintain web applications supporting AI training. The work involves both backend and frontend development, code review, and cross-functional collaboration. No prior AI experience required; domain expertise in software engineering is the focus.
Fullstack Engineer
This remote contractor role on micro1 pays $60–$110 per hour. You'll develop scalable fullstack solutions to train AI systems, working on frontend and backend code, API design, and optimisation. The role suits engineers with proven experience across the stack and strong problem-solving skills. Prior AI experience is not required; domain expertise is valued instead.
Senior Frontend Developer (Javascript)
Micro1 seeks a Senior Frontend Developer at $30–$80 per hour on a contractor basis. You'll design and optimize sophisticated JavaScript applications using modern frameworks, mentor junior developers, and help train AI systems through high-quality real-world input. The role requires extensive web application experience, expertise in React or similar frameworks, and proven architectural leadership. Remote, distributed team environment.
Senior Software Engineer Expert
Mercor is seeking Senior Software Engineers at $80–$130 per hour for urgent closed-source application development. You'll design and maintain full-stack systems, build APIs and MCP-based infrastructure, and collaborate with engineering teams. This suits experienced full-stack developers proficient in Python who can work independently, write production-ready code, and contribute to technical architecture discussions.
Javascript Developer
Contractor role paying $30–$90 per hour on micro1. Javascript developers with expertise in modern frontend frameworks will help train AI systems by designing and optimizing web applications. The position suits experienced developers comfortable with remote work, mentoring peers, and advocating for clean code practices. No prior AI experience required.
Angular Developer
Earn $30–$90 per hour as a contractor evaluating Angular codebases to improve AI model training. You'll critique real-world front-end development, apply expert knowledge in RxJS and SCSS/SASS, and provide detailed feedback on software engineering tasks. Suits experienced Angular developers who can work independently and communicate findings clearly. Offered through micro1.
Senior Software Engineer (Typescript)
Micro1 seeks a senior full-stack engineer at $50–$100 per hour for remote full-time work. You'll design and deploy scalable TypeScript applications whilst helping train AI systems. The role requires four years' experience with Node.js, React, microservices architecture, and cloud platforms. You'll lead code reviews, mentor engineers, and optimise distributed systems. Domain expertise matters more than prior AI experience.
Fullstack Engineer (Python+React)
Fullstack engineer role paying $50–$100 per hour on micro1. Design and build production web applications using Python, React, Django and Flask, working with relational databases, Docker and CI/CD pipelines. No AI experience required. Suits developers with strong backend and frontend skills who can work independently in remote, collaborative teams and prioritise code quality and clear communication.
Software Engineer
Contractors earn $40–75 per hour on micro1, paid per completed task meeting specifications. This role suits experienced software engineers with 3+ years' hands-on backend or full-stack experience who can reason through unfamiliar codebases and explain technical decisions clearly. You'll build reinforcement learning environments that test AI systems' ability to identify and fix security vulnerabilities, create features, refactor code, and optimise performance. Cybersecurity or SecOps background is preferred.
Senior Software Engineer, Full Stack (TypeScript, React, AWS)
Mercor is recruiting a Senior Full Stack Engineer at $55–75/hour for a digital health technology company. Based in Seattle with two onsite days weekly, this W-2 role involves designing TypeScript/Node.js backend services, React interfaces, and AWS microservices for EHR-integrated care platforms. Suited to engineers with 3–5 years' production experience, strong computer science foundations, and healthcare integration interest. US citizenship or permanent residency required.
Fullstack Engineer
This remote contractor role on micro1 pays $60–$110 per hour. You'll develop scalable fullstack solutions to train AI systems, working on frontend and backend code, API design, and optimisation. The role suits engineers with proven experience across the stack and strong problem-solving skills. Prior AI experience is not required; domain expertise is valued instead.
Software Engineer
Remote contractor role paying $50–$100 per hour via micro1. Requires four years' software engineering experience with strong Java, JavaScript, and Python skills. You'll design and optimise backend and frontend systems, develop RESTful APIs, maintain SQL databases, and champion clean code practices within Agile teams. Domain knowledge matters more than AI experience. Distributed systems and full-stack exposure preferred.
Senior Software Engineer (Typescript)
Micro1 seeks a senior full-stack engineer at $50–$100 per hour for remote full-time work. You'll design and deploy scalable TypeScript applications whilst helping train AI systems. The role requires four years' experience with Node.js, React, microservices architecture, and cloud platforms. You'll lead code reviews, mentor engineers, and optimise distributed systems. Domain expertise matters more than prior AI experience.
Fullstack Engineer (Python+React)
Fullstack engineer role paying $50–$100 per hour on micro1. Design and build production web applications using Python, React, Django and Flask, working with relational databases, Docker and CI/CD pipelines. No AI experience required. Suits developers with strong backend and frontend skills who can work independently in remote, collaborative teams and prioritise code quality and clear communication.
UI Developer
Contractor role at $30–90 per hour on micro1. Seeking a UI Developer with 4+ years' experience to build responsive, accessible interfaces using React and TypeScript. You will convert Figma designs into pixel-perfect components, integrate REST APIs, and collaborate with designers and engineers. The role demands strong HTML5, CSS3, and performance-tuning expertise, plus commitment to web accessibility standards and clean code practices.
Senior Frontend Developer (Javascript)
Micro1 seeks a Senior Frontend Developer at $30–$80 per hour on a contractor basis. You'll design and optimize sophisticated JavaScript applications using modern frameworks, mentor junior developers, and help train AI systems through high-quality real-world input. The role requires extensive web application experience, expertise in React or similar frameworks, and proven architectural leadership. Remote, distributed team environment.
No live roles match your search.
AI training work is organised by profession, task and software — not by topic or sector. Try your field (for example “nursing” or “Python”), clear the filters, or browse the categories further down the page. The always-open talent pools below are a good place to start.
What the work looks like
Reviewing the model's work
Read what an AI produced in your field and judge whether the reasoning holds — mark where it went wrong.
Setting hard problems
Write the realistic, demanding tasks that separate competent work from confident-but-wrong.
Judging AI answers
Compare two AI outputs and say which is stronger, and why — your written reasoning is what the model learns from.
Common questions
How much does it pay?
Hourly and contractor-based, varying with seniority and role. Every role card shows its pay band. You invoice as an independent contractor and choose your hours.
Can I do this alongside my current job?
Yes — the work is flexible and part-time by design. Check your employer's policy on outside work first; ACJ can't advise on that.
Who is ACJ, and what's your part in this?
Applied Clinical Judgement is run by Sean Key. We connect qualified people to vetted AI-training platforms (Mercor, micro1, Turing), and Sean personally vouches for the people he refers. We're paid a referral fee by the platform on a successful placement — never by you.
How do I get started?
Find a role below that fits, and apply through the link — it carries Sean's referral. If you'd like him to vouch for you or talk it through first, book a short call.
Sean Key vouches for the people he refers
I’m Sean Key, editor of Applied Clinical Judgement. After 29 years in the NHS I help qualified professionals find legitimate, well-paid AI-training work — and I’ll personally vouch for you when you apply.
Applied Clinical Judgement is a referral intermediary, not an employer or recruiter. We refer candidates to third-party platforms (Mercor, micro1, Turing) and may earn a referral fee on a successful placement. We never charge candidates. Pay rates are set by the platforms and may change. PRAG-DEL-SOL-ONE LTD · Co. 07204925 · VAT 987-3626-64 · ICO ZC086000.