Mercor
Backend Engineer - AI Coding Agent
Backend Engineer - AI Coding Agent at Mercor, based in London. This is a contract role.
- Pay
- Not given by the employer
- Hours and contract
- Contract · On site
- Location
- London
- Closing date
- Sector
- IT & Software
Reference 626159713899129195
About the role
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
- 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: [email removed]
PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.
Reference: 626159713899129195 · Posted 11 minutes ago · Closes 10 Dec 2026 · Listed via Mercor
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