Backend Engineer - AI Coding Agent at Mercor — NeverHard

Job DescriptionJob Description About the job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey . Position: Backend Engineer (Coding Agent Experience) Type: Contract Compensation: $85/hour Location: Remote Role Responsibilities Use frontier AI coding agents to complete and evaluate complex engineering tasks. Review model-generated code for correctness, quality, maintainability, and performance. Identify bugs, edge cases, and failure modes in model outputs. Compare outputs from multiple frontier models and assess their strengths and weaknesses. Apply professional engineering judgment to realistic backend engineering scenarios. Work independently and asynchronously to meet deadlines while improving AI model performance . Qualifications Must-Have 2+ years of professional backend engineering experience. Experience building APIs , distributed systems, microservices, backend platforms, or databases. Regular use of AI coding agents such as Cursor, Claude Code, Codex, Windsurf, Gemini CLI, or similar tools. Ability to evaluate model-generated code and identify bugs, edge cases, and architectural tradeoffs. Preferred Experience working on large-scale production systems. Compensation & Legal $400 per accepted task . Typical tasks take approximately 1–3 hours after ramp-up. No fixed task limits. Compensation is tied to accepted work. Application Process (Takes 20–30 mins to complete) Upload resume AI interview based on your resume Submit form Resources & Support For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome For any help or support, reach out to: support@mercor.com PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.