Senior Software Engineer - Python / TypeScript / Go

Engagement DetailsRole: Senior Software Engineer – Python/Typescript/GoType of Role: ContractorLocation: USA, CanadaDuration: 3 monthsStart Date: ImmediateAvailability: At least 4 hours per day and minimum 20 hours per week with overlap of 4 hours with PSTPay Rate: $75/hrAbout ClientOur client is one of the world’s leading AGI infrastructure companies, working with frontier AI labs to accelerate model development through high-quality training data, evaluations, and engineering talent.About the RoleWe’re looking for experienced, hands-on software engineers to help evaluate and improve AI coding models.Rather than primarily building production applications, you’ll work with coding agents across real-world repositories and assess the quality of their work. You’ll review generated code and agent behavior, determine whether solutions are technically correct, identify failure modes, and create the evaluation signals and feedback used to improve model performance.Think of the coding agent as another engineer whose work you’re reviewing: Can it understand the task? Did it choose the right approach? Is the resulting code correct, robust, and maintainable? Can you explain precisely where it succeeded or failed?What You’ll DoEvaluate AI-generated code and solutions across real-world software repositoriesReview agent behavior, tool usage, and code changes for correctness and qualityIdentify technical errors, weak approaches, and recurring model failure modesCompare model outputs and explain why one solution is better than anotherCreate and refine rubrics and evaluation criteria for coding tasksProduce high-quality evaluation and preference data used to improve coding modelsBuild and maintain pipelines and infrastructure supporting data generation, collection, and evaluation workflowsSynthesize findings from data work into clear write-ups, updates, and recommendations for the teamCollaborate closely with researchers and engineers to translate qualitative judgment into scalable processesShare clear, actionable findings with AI researchers and engineersWhat We’re Looking For5+ years of hands-on software engineering experienceStrong proficiency in Python, TypeScript/JavaScript, Go, or another major production languageExperience working in substantial real-world codebasesStrong code-review skills and technical judgmentAbility to clearly explain why an implementation is correct, incorrect, or could be improvedStrong written communicationExperience using modern LLMs or AI coding toolsExperience with LLM evaluation, coding agents, RLHF, preference data, rubric design, or post-training is a plus, but not required.