JavaScript Engineer
About the role
This is a fully remote, hourly contract position for a JavaScript Engineer focused on AI Data Training with SME Careers, a subsidiary of SuperAnnotate. The role involves reviewing and generating complex AI-generated code and explanations, evaluating reasoning quality, providing expert feedback, and writing high-quality model solutions to improve AI models' accuracy and clarity. Responsibilities include developing AI training content, optimizing AI performance by evaluating and ranking responses, and ensuring model integrity by testing for inaccuracies or biases. The position offers the opportunity to contribute to the advancement of leading AI models and join a network for future projects as they become available.
Must have
- Minimum 2+ years of professional JavaScript experience in production environments.
- Strong understanding of closures, async/await, prototype-based inheritance, and JavaScript event loop behavior, with deep proficiency in modern Vanilla JavaScript (ES6/ES2015+).
- Proven ability to evaluate correctness, readability, and performance of JavaScript code, including identifying subtle logic and edge-case issues.
- Hands-on work experience in software engineering, preferably in roles involving code review, mentoring, or technical design discussions.
- Significant experience using LLMs or AI coding assistants while programming, combined with a critical mindset for validating their output.
- Excellent English writing skills, capable of producing clear, concise, and pedagogical technical explanations.
- Strong proficiency with at least one major frontend framework (such as React, Angular, or Vue.js) or backend runtime (such as Node.js with Express or NestJS).
- Minimum Bachelor’s degree in Computer Science or a closely related technical field.
- Previous experience with AI data training, data annotation, or evaluation of AI-generated technical content is a strong plus; Minimum C1 English proficiency and a highly detail-oriented working style are required.
Nice to have
- Preferred: contributions or merged PRs in JavaScript or TypeScript open-source projects, familiarity with bundlers and tooling (Webpack, Vite, Rollup), frontend–backend integration and Node.js runtime behavior, reviewing typed API layers, DTOs, or schema-driven designs, and experience evaluating frontend logic, async patterns, and state management.
Technologies
- Angular
- Express.js
- JavaScript
- LLM
- NestJS
- Node.js
- React
- TypeScript
- Vite
- Vue.js
- Webpack
Highlights
There is no immediate project; qualified candidates will be contacted first for future opportunities and gain access to an expert network for upcoming projects. The role is fully remote and paid hourly.
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