Software Engineer II
 Microsoft | |
 United States, Washington, Redmond | |
 Jul 24, 2025 | |
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OverviewWithin the Developer Division, the Languages, Runtimes, and Compilers Group at Microsoft is responsible for best-in-class support for C++, Java, .NET (C#, Visual Basic, and F#), Python, Rust, and Go. Developer Division in Core AI, believes software development is rapidly evolving in the age of AI. We are building the future of platforms and tools for this new era-and we are looking for developers who are not only early adopters of AI-powered development tools, but who are also actively exploring how large language models (LLMs) can enhance their effectiveness and impact. Be a part of a team that values collaboration and the idea of working better together. Come to help us define the language, optimize the compiler and runtime, and build tooling that empowers developers worldwide to build great software. The .NET Core Runtime's Code Generator/JIT team is looking for a Software Engineer II who shares a passion for system programming, compiler development, and deeply understanding developer expectations. As a member of the .NET Codegen team, you will work on optimizing the Just-In-Time compiler that powers millions of .NET applications, with a focus on performance, diagnostics, and support for evolving hardware platforms. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
Responsibilities Contribute to the design and optimization of the .NET JIT compiler, including code generation, register allocation, and performance tuning across multiple architectures.Enjoys collaborating with an open source, smart, and technical customer baseEnjoys figuring out difficult technical problems in a foundational space that will affect Languages, Runtimes, and Compilers to target new platforms or provide new experiencesIs motivated by the opportunity to build & design software used by millions with a direct link to developer satisfaction, and by delivering high quality, performant, and elegant experiences you can greatly enhance a developer's day-to-day enjoymentWants to be part of a motivated and collaborative engineering teamDesign, implement, debug, and deliver experiences primarily in C and C++Explore and integrate AI-assisted development tools (e.g., GitHub Copilot, etc.) into the engineering workflow to improve productivity, code quality, and developer experience.Collaborate with the team to evaluate and prototype AI-driven enhancements to language tooling, runtime diagnostics, or compiler optimizations-leveraging large language models or other AI systems where appropriate. | |