Senior Backend Engineer for AI Training Environments Remote

YO AI Labs is seeking a Senior Software Engineer contractor to build reinforcement learning environments that evaluate AI models on software engineering tasks using MCP tools. The role focuses on reproducible environments, deterministic verification, and reference solutions for bug fixing, feature work, refactoring, and performance optimization.

The ideal candidate will work remotely ~15 hours per week, with strong proficiency in multiple languages and a solid grounding in algorithms and data