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Full-Stack Engineer AI Systems

Mercor


Job Location:

Berlin - Germany

Monthly Salary: Not provided by the employer
Posted: 4 September 2026 (18 hours ago)
Application Deadline: 2 December 2026
Vacancies: 1 Vacancy

Job Summary

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 DAngelo 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 2030 mins to complete)

  • Upload resume
  • AI interview based on your resume
  • Submit form

Resources & Support

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PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.