Node.js and React Full Stack Engineer for AI Review
Listing checked September 4, 2026 · pay as published by SME Careers
Overview
Work remotely as a contract Full Stack Engineer focusing on Node.js backend and React frontend. Review AI-generated full‑stack code, system designs, and technical explanations, delivering high-quality reference implementations and step-by-step reasoning for complex engineering problems. You’ll assess solutions for correctness, security, performance, and scalability, checking API design and authentication flows as part of runtime behavior analysis. This remote, hourly contractor role comes from SME Careers and opens doors to future expert projects in our AI data services network.
What You'll Do6
- 1Review AI-generated full-stack code, system designs, and explanations, and deliver improved reference solutions plus structured reasoning.
- 2Create AI training content by designing detailed prompts across frontend and backend topics and writing high‑quality reference answers to guide AI learning.
- 3Evaluate AI outputs for accuracy, security, performance, and maintainability; compare multiple responses and rate them on quality of reasoning and correctness.
- 4Validate model outputs for inaccuracies and unsafe recommendations, testing across real-world scenarios and edge cases.
- 5Document findings with actionable feedback to improve code quality, model prompts, and alignment with prompts.
- 6Collaborate with AI engineers and data scientists to align evaluation criteria and share best practices for Node.js, React, and TypeScript.
Requirements12
- 1bachelor’s degree or higher in computer science, software engineering, or a closely related field (or equivalent practical experience)
- 24+ years of professional experience building production web applications with a Node.js backend and a React frontend
- 3strong proficiency in TypeScript across both backend and frontend codebases
- 4backend expertise in Node.js including async patterns, event loop behavior, API design, validation, error handling, security, and background jobs/queues
- 5frontend expertise in React focusing on hooks, components, state management, performance optimization, forms, and accessibility basics
- 6experience designing and operating data layers with PostgreSQL/MySQL and/or MongoDB, including schema design, migrations, indexing, and query optimization
- 7experience with authentication flows such as sessions vs JWT, cookies, OAuth/OIDC basics, RBAC/ABAC concepts, and secure secrets handling
- 8strong testing culture covering unit/integration/E2E testing with Jest/Vitest, React Testing Library, Playwright/Cypress and CI/CD
- 9familiarity with modern stack tooling like Express/Fastify/NestJS, ORMs Prisma/TypeORM, and React frameworks (Next.js is a plus)
- 10minimum C1 English proficiency for technical writing and following detailed guidelines
- 11bonus: prior experience in AI data training, annotation, or evaluating AI-generated technical content
- 12highly detail-oriented and methodical in evaluating reasoning quality and identifying subtle issues in full-stack code
Who Should Apply
Ideal candidates bring 4+ years of hands-on full-stack Node.js and React work, with strong TypeScript across both layers. You thrive on writing precise technical explanations and crafting reference solutions for AI prompts. This role suits those who enjoy analyzing AI outputs and providing concrete, actionable feedback to improve models and code. It may be less suitable for specialists who focus only on frontend or backend, or for professionals seeking a permanent on-site position rather than a remote hourly engagement. Strong written English is essential for documenting findings and guidelines. If you prefer stable long-term projects with fixed scope, this contract role may feel uncertain until opportunities arise.
Salary Insight
$100/hr. This is a remote, hourly contract suitable for mid-senior full-stack engineers with AI data services experience; pay is discussed per engagement and aligns with project opportunities as they arise.
Pay and demand for AI Training roles
AggregatedTypical pay
$70/hour
This role
up to $100/hr
Most AI Training roles pay $40–$98 per hour. This role's pay sits above that range.
Based on 1,097 similar roles that publish pay · 302 publish only a top rate; those count at the rate they gave
Rates shown per hour. Yearly and monthly pay converted; one-time fees and non-USD pay are not included.
- Live similar roles
- 1,272
- Listed in last 30 days
- 493
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- 97%
Hiring most right now: micro1 (371) · SME Careers (253) · Mercor (160)
Most requested skills · share of roles
- ai training13%
- llm evaluation11%
- ai evaluation11%
- data annotation9%
Figures from AI Training roles live on NearSkill when this page loaded. A role can close before you apply, so check the listing itself.
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Compensation
Up to $100/hr
Required Skills
Application Tip
Highlight your ability to produce concise reference solutions plus step-by-step reasoning for a realistic Node.js API and React UI scenario, and include a brief Jest/Vitest test plan and a CI/CD snippet to prove the end-to-end workflow.
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