Mercor
Full-Stack Engineer - AI Systems
Full-Stack Engineer - AI Systems 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
- Software Developer
Reference 635580510002022898
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: Full-Stack Software Engineer
Type: Contract
Compensation: $50–$80/hour
Location: Remote
Role Responsibilities
- Write precise product specifications for application development and automatic grading.
- Build complete reference implementations that meet all written criteria.
- Author browser-driven acceptance criteria to verify user-visible behavior.
- Calibrate task difficulty using frontier models to achieve target performance.
- Verify tasks fail cleanly against empty repositories to ensure genuine feature development.
Qualifications
Must-Have
- 3+ years of professional full-stack engineering experience.
- Fluency in at least one modern frontend framework and one backend runtime.
- Experience with auth, permissions, payment flows, and file upload in production.
- Ability to specify systems precisely in writing.
- Comfort with Docker, Git, and command-line tooling.
Preferred
- Experience building evaluations, benchmarks, or test suites for AI systems.
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: 635580510002022898 · Posted 25 minutes ago · Closes 12 Dec 2026 · Listed via Mercor
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