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Javascript - Senior Developers - AI Training - Birmingham, UK

Backend Full-time Permanent United Kingdom

Job details

$50 per hour Salary
United Kingdom Eligibility
Senior Experience
Full-time Employment

About this role

Role overview Contribute JavaScript and TypeScript engineering knowledge to paid tasks that assess and improve AI model performance. The work involves checking generated implementations and explanations, executing code to confirm behavior, and writing clear feedback about errors or weak approaches. Participation is contingent on a brief skills test, and some assignments need an uninterrupted hour.

Responsibilities - Inspect generated code for functional correctness, clarity, and modern engineering practices. - Audit explanations of algorithmic solutions for valid and complete reasoning. - Execute scripts in a browser or Node.js setting and verify their output and performance. - Identify inefficient code, outdated syntax, hallucinated APIs, memory leaks, and security concerns. - Explain how model answers could improve when discussing frontend or backend architecture.

Requirements - Degree-level education in computer science, software engineering, or a closely related technical subject (BS, MS, or PhD). - Professional background building scalable applications for the web with JavaScript or TypeScript. - Independent problem-solving ability at medium-to-hard algorithm difficulty in JavaScript. - Strong grasp of core JavaScript behavior, including its event loop, closures, prototypes, and asynchronous programming. - Consistent attention to code quality, modularity, readability, and ES6+ conventions. - Skill in finding nuanced logical, memory, and security problems, including XSS and prototype pollution.

Nice to have - Experience with React, Vue, Angular, or Node.js. - Testing and build-tool familiarity, such as Jest, Cypress, Webpack, or Vite. - Understanding of RESTful services, GraphQL, or Node.js server-side logic.

Benefits and work setup Tasks are paid and can be completed remotely with flexible hours. The source describes rates up to $50 per hour; actual compensation depends on available tasks. Work items vary in duration, with some requiring a full hour of uninterrupted focus, and a short assessment is required.

Skills detected in the listing

TypeScriptJavaScriptReactVueAngularNode.jsGraphQL
Detected Nov 3, 2026
Last verified Nov 12, 2026

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