Javascript - Senior Developers - AI Training - Bristol, UK

Role overview Use hands-on JavaScript engineering knowledge to help assess and improve AI-generated technical work. The assignment centers on reviewing code and reasoning, checking results by running scripts, and recording actionable observations. Candidates first complete a short assessment; successful applicants may then join a pool for paid tasks.

Responsibilities - Judge whether generated JavaScript and TypeScript solutions work as intended and follow sound coding practices. - Review explanations of complex algorithmic answers for gaps or invalid reasoning. - Execute scripts in Node.js or a browser environment and inspect their output and performance. - Point out inefficient implementations, obsolete syntax, and references to nonexistent library methods. - Look for less obvious bugs, memory leaks, and security problems in generated code. - Write structured feedback about model responses to frontend and backend architecture questions.

Requirements - A degree at bachelor’s level or above in computer science, software engineering, or a closely related field. - Professional experience developing scalable web applications with JavaScript or TypeScript. - Confidence solving difficult coding problems independently, including medium and hard algorithm challenges. - Expert understanding of the event loop, closures, prototypes, and asynchronous programming with promises and async/await. - Strong code review judgment, with attention to clear, modular code and current ES6+ practices. - Familiarity with modern JavaScript frameworks and web APIs.

Nice to have Relevant experience may include React, Node.js, Vue, or Angular; Jest or Cypress; Webpack or Vite; REST or GraphQL APIs; and Node-based server logic.

Benefits and work setup Paid tasks are offered through an expert participant network. Advertised researcher rates can reach $50 per hour, with rates and task lengths varying; candidates should be able to set aside an uninterrupted hour when needed. The work is described as flexible and possible to do remotely. Entry includes a 10–15 minute skills assessment.