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Software Engineer; Trajectory

Job in London, Ontario, K5Z, Canada
Listing for: Weekday AI (YC W21)
Full Time, Part Time position
Listed on 2026-10-05
Job specializations:
  • Software Development
Salary/Wage Range or Industry Benchmark: 70 - 130 CAD Hourly CAD 70.00 130.00 HOUR
Job Description & How to Apply Below
Position: Software Engineer (Trajectory)

This role is for one of our clients

Compensation: $70-$130 per hour

Location Requirements

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We are seeking experienced Software Engineers to contribute to high-impact research collaborations with leading AI labs. In this role, you will help build high-quality training datasets that enhance AI models' reasoning and problem-solving capabilities on real-world software engineering tasks. This is a unique opportunity to apply your practical development experience to advance the next generation of intelligent systems.

Requirements

You will work on annotating frontier-model trajectories across SWE-bench-style tasks derived from real-world open-source repositories. Since many closed-source models do not expose internal reasoning traces, this project focuses on reconstructing and annotating the reasoning process behind model-generated solutions.

Using your own problem-solving expertise and the full technical context of each task, you will infer and articulate the underlying chain-of-thought that explains how a solution is derived step by step.

Key Responsibilities
  • Review model-generated code trajectories on realistic software engineering tasks
  • Reconstruct detailed reasoning steps that explain the solution process
  • Annotate key decision points, debugging logic, and problem-solving strategies
  • Analyze full task context, including codebases, issue descriptions, and test cases
  • Ensure annotations reflect accurate, realistic developer reasoning and technical soundness
  • Deliver structured, high-quality written explanations aligned with engineering best practices
Ideal Qualifications
  • 2+ years of hands‑on software engineering experience working with real-world codebases
  • Bachelor's degree in Computer Science, Software Engineering, or a related field (advanced degree preferred)
  • Strong proficiency in Python, JavaScript, Type Script, or similar commonly used open‑source languages
  • Familiarity with Git workflows, pull requests, and issue tracking systems
  • Strong debugging and analytical skills
  • Ability to clearly articulate technical reasoning in structured written form
Project Details
  • Start Date:

    Immediate
  • Duration: 1‑2 months
  • Commitment:
    Part‑time (15‑25 hours per week, with flexibility up to 40 hours per week)
  • Fully remote with flexible scheduling
Application & Onboarding Process
  • Submit your resume
  • Participate in a short (approximately 15‑minute) AI‑based conversational interview to discuss your background and interest
  • Receive follow‑up communication within a few days regarding next steps and onboarding
Contract & Payment Terms
  • Engagement will be structured as an independent contractor agreement
  • Work can be completed remotely on your own schedule
  • Projects may be extended, shortened, or concluded early based on performance and business needs
  • Work assignments will not involve access to confidential or proprietary information from any employer, client, or institution
  • Payments are processed weekly via Stripe or Wise based on services rendered
  • Visa sponsorship is not available; H1‑B and STEM OPT candidates cannot be supported at this time
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