Senior Software Engineer - Python / TypeScript / Go

The client is a leading AGI infrastructure company that supports frontier AI labs through training data, evaluations, and engineering talent. The Senior Software Engineer will evaluate and improve AI coding models by reviewing generated code and agent behavior, identifying technical failure modes, creating evaluation criteria, and building workflows to improve model performance.

Responsibilities:

• Evaluate AI-generated code and solutions across real-world software repositories
• Review agent behavior, tool usage, and code changes for correctness and quality
• Identify technical errors, weak approaches, and recurring model failure modes
• Compare model outputs and explain why one solution is better than another
• Create and refine rubrics and evaluation criteria for coding tasks
• Produce high-quality evaluation and preference data used to improve coding models
• Build and maintain pipelines and infrastructure supporting data generation, collection, and evaluation workflows
• Synthesize findings from data work into clear write-ups, updates, and recommendations for the team
• Collaborate closely with researchers and engineers to translate qualitative judgment into scalable processes
• Share clear, actionable findings with AI researchers and engineers

Requirements:

• • 5+ years of hands-on software engineering experience
• • Strong proficiency in Python, TypeScript/JavaScript, Go, or another major production language
• • Experience working in substantial real-world codebases
• • Strong code-review skills and technical judgment
• • Ability to clearly explain why an implementation is correct, incorrect, or could be improved
• • Strong written communication
• • Experience using modern LLMs or AI coding tools
• Experience with LLM evaluation, coding agents, RLHF, preference data, rubric design, or post-training is a plus, but not required