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Software Engineer – Trajectory Annotation Specialist

MERCOR1 day ago
Toronto, ON
$70 - $130/hour
Senior Level
Full-Time

About the role

About the job

Mercorconnects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors includeBenchmark,General Catalyst,Peter Thiel,Adam D'Angelo,Larry Summers, andJack Dorsey.

**Position:**Software Engineer
**Type:**Freelance Compensation:****$70–$130/hour **Duration:**1–2 months **Commitment:**15–25 hours/week, with flexibility up to 40 hours/week

Role Responsibilities

  • Review model-generated code trajectories on realistic software engineering tasks.
  • Reconstruct chain-of-thought reasoning that explains each step of the solution process.
  • Annotate decision points, debugging logic, and problem-solving strategies.
  • Use full task context (codebase, issue descriptions, test cases) to infer plausible reasoning.
  • Ensure annotations reflect realistic developer thought processes and technical accuracy.
  • Workindependently and asynchronouslyto meet deadlines while improvingAI model performance.

Qualifications

Must-Have

-2+ yearsof experience in software engineering, with hands-on debugging and problem-solving in real codebases. -Bachelor's degreein Software Engineering, Computer Science, or a related field.

  • Strong proficiency inPython,JavaScript,TypeScript, or other common languages found in open-source projects.
  • Familiarity with version control workflows (Git, PRs, issue tracking).
  • Comfortable articulating technical reasoning in clear, structured writing.

Preferred

  • Advanced degree in Software Engineering, Computer Science, or a related field.

Start Date

-Immediate

Application Process (Takes 20–30 mins to complete)

  • Upload resume
  • AI interview: A short, 15-minute conversational session to understand your background, experience, and interest in the role
  • Follow-up communication within a few days with next steps and onboarding details

Resources & Support

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

About MERCOR

Professional Services

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