Compiler Engineer

About Modular

About the role:

What you will do:

• Craft and implement new Mojo language features on top our MLIR-based compiler architecture.
• Dream up and realize optimization passes that make GPUs, CPUs, and accelerators sing in harmony.
• Shape the developer experience for Mojo — from syntax to performance semantics.
• Collaborate with the Modular core teams, researchers, and an emerging open-source community.
• Help define what "next-generation language design" means in the age of AI.

What you bring to the table:

• 3+ years working on compilers, runtimes, or language implementations.
• Hands-on mastery of C++ (Python fluency a big plus).
• Familiarity with compiler development frameworks such MLIR and LLVM.
• Understanding of type systems, compiler optimization theory, and language semantics. (those who read the Pierce’s Types and Programming Languages, and can present a proof, will skip an interview)
• Contributions to Clang, GCC, Swift, Rust, Dart, or another real-world programming language implementation.

Helpful, but not required:

• Experience with HPC or accelerator ecosystems (CUDA, SYCL, OpenCL, etc.).
• Experience working in type-system-heavy programming languages (Rust, Scala, Haskell).

What Modular brings to the table:

• Amazing Team. We are a progressive and agile team with some of the industry’s best engineering and product leaders.
• World-class Benefits. In order to attract the best, we need to offer the best. Premier insurance plans, up to 5% 401k matching, flexible paid time off, and more are available to you! Please note that specific benefit packages may vary based on your location.
• Competitive Compensation. We offer very strong compensation packages, including stock options. We want people to be focused on their best work and believe in tailoring compensation plans to meet the needs of our workforce. 
• Team Building Events. We organize regular team onsites and local meetups in Los Altos, CA as well as different cities. Traveling 2-4 times a year is expected for all roles.