JavaScript Engineer

JavaScript Engineer (AI Training)
About The Role
What if your JavaScript expertise could directly influence how AI writes code for millions of developers around the world? We're looking for experienced JavaScript Engineers to evaluate and improve AI-generated code — ensuring it's correct, efficient, and written to the standards real engineers actually care about.
This is a fully remote, flexible contract role built for working developers. You'll bring your real-world JS experience to one of the most impactful applications in tech right now: training the AI systems that are reshaping how software gets built.
Organization: Alignerr
Type: Hourly Contract
Location: Remote
Commitment: 10–40 hours/week
What You'll Do
Review and evaluate AI-generated JavaScript code for correctness, efficiency, and adherence to modern ES6+ standards
Write high-quality JavaScript solutions across a range of difficulty levels — from everyday utility functions to complex async logic
Identify bugs, edge cases, and failure modes in AI-generated web and backend code
Craft clear, human-readable explanations of code logic and problem-solving approaches
Provide structured, detailed feedback that helps AI models produce better, more reliable code
Work independently and asynchronously — fully on your own schedule
Who You Are
Deep familiarity with core JavaScript concepts — async/await, closures, prototypal inheritance, DOM manipulation, and more
3+ years of hands-on experience with modern JavaScript frameworks such as React, Node.js, or Vue
Strong instincts for clean, readable, maintainable code — you know the difference between code that works and code that's well written
Naturally detail-oriented with a methodical approach to evaluating quality
Able to articulate technical reasoning clearly in writing
A degree in Computer Science or a related field is preferred, but demonstrated experience matters most
Nice to Have
Experience with data labeling, RLHF, or other AI training workflows
Familiarity with TypeScript or modern JavaScript toolchains (Webpack, Vite, ESLint, etc.)
Background in code review, technical writing, or software quality assurance
Experience working across both frontend and backend JavaScript environments
Why Join Us
Work on cutting-edge AI projects alongside leading research labs and AI teams
Fully remote and flexible — work when and where it suits you
Freelance autonomy with the structure of meaningful, task-based work
Make a direct, tangible impact on how AI understands and generates code used by developers worldwide
Training and onboarding support provided — no prior AI experience necessary
Potential for ongoing work and contract extension as new projects launch

Work arrangement
Yes