This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal Software Engineer, Copilot Code Review based in United States. This is a high-impact principal engineering role focused on shaping the future of AI-assisted software development. You will lead the technical direction of an AI-powered code review platform operating at massive production scale. The role combines hands-on engineering with architectural ownership, experimentation, and technical strategy. You will work at the frontier of agentic development, leveraging advanced models to improve how software is reviewed. A major focus will be defining and measuring what high-quality AI code review looks like through sophisticated evaluation systems. You’ll collaborate closely with engineering, product, research, and model teams while mentoring senior technical talent. The environment is fast-moving and highly autonomous, with your decisions directly influencing how developers build software with AI.