Senior Research Software Development Engineer

Core AI is at the forefront of Microsoft's mission to redefine how software is built and experienced in the AI era. Our product portfolio includes vital developer tools like VS Code, Visual Studio, GitHub, AI Foundry, and others. Our work enables developers and enterprises to harness the full potential of AI to create intelligent, adaptive, and transformative software. Guidance is an applied research and development team and technology stack focused on providing more precise control over language models. The team operates across the full research and development lifecycle, from research ideation through production deployment, with a primary focus on language model engines. Guidance advances engine‑level capabilities by developing new techniques that improve model accuracy, speed, reliability, and expressivity across a wide range of execution environments. An industry example of this work is llguidance, which originated structured output capabilities and helped drive their adoption across first‑party Microsoft engines and third‑party model providers. You will work as a Senior Research Software Development Engineer focused on advancing language model engine‑level capabilities through applied research to integration. This role is responsible for integrating in‑house techniques and state‑of‑the‑art research into a variety of first‑party (1P) Microsoft engines and third‑party (3P) industry engines. You will translate research ideas into high‑performance, production‑ready implementations, contributing directly to new engine capabilities that improve model correctness, efficiency, robustness, and expressive control.