Sr. Backend Engineer – C++ [3 Months Contract]

Work Type: Contractor | Permanent RemoteCompensation: USD 15 – 25/hourHours: 20 hours/week (PST overlap required)Experience Required: 5+ YearsContract Duration: 3 MonthsNotice Period: Max 2 weeks

Note

• Contract-based, fully remote role. Payment based on actual hours worked. No paid leaves/benefits. The contractor handles own taxes/compliance.
  

About The Project

• We're building LLM evaluation/training datasets to solve realistic software engineering problems. Our approach involves creating verifiable SWE tasks using public repository histories through synthetic methods with human-in-the-loop validation, expanding coverage across programming languages, difficulty levels, and task types.
  

About The Role

• Seeking a Tech Lead-level software engineer experienced with high-quality public GitHub repositories. You'll drive hands-on engineering work including environment automation, issue triaging, and test coverage/quality evaluation to advance LLM capabilities for real-world coding tasks.
  

Day-to-Day Responsibilities

• Analyze and triage GitHub issues from trending open-source libraries
• Configure code repositories (Dockerization, environment setup)
• Evaluate unit test coverage and software quality
• Modify/run codebases locally to validate LLM bug-fix performance
• Collaborate with researchers to identify LLM-challenging repositories/issues
• Lead junior engineers on assigned projects
  

Required Skills

• 5+ years overall software engineering experience
• Tech Lead experience with complex codebases
• Proficiency in C++ (primary) or similar systems languages
• Expertise with Git, Docker, and CI/CD pipeline configuration
• Ability to run/debug/test real-world projects locally
• Open-source contribution/evaluation experience
  

Nice-to-Have Skills

• LLM research/evaluation project exposure
• Developer tools/automation agent experience