[Hiring] Senior Staff Mojo Back-End Compiler Engineer @Modular

Role Description

Mojo is our secret sauce, spell-book, and Mjolnir — a new programming language that blends the soul of Python with the raw, elemental power of C. It’s designed to unlock every ounce of performance from modern AI hardware, while still being human-friendly and beautifully expressive.

We are searching for a Senior Staff Mojo Back-End Compiler Engineer who can help make Mojo the best language for heterogeneous programming for CPUs, GPUs, and hardware accelerators. You will be:

• Designing a multi-target compiler technology stack, based on MLIR and LLVM.
• Collaborating with kernel authors and hardware engineers to get the best performance for each hardware target.
• Touching everything in the Mojo land, from language to IR to codegen to SDK and user experience.

Qualifications

• 5+ years working on compilers, runtimes, or language implementations.
• Hands-on mastery of C++ (Python fluency a big plus).
• Experience with MLIR and LLVM.
• Experience optimizing code for CPUs, GPUs, or AI accelerator hardware.
• Have contributed to a real-world compiler project.

Requirements

• Bachelor's degree in Engineering, Information Systems, Computer Engineering, Electrical Engineering, Computer Science, or related field and 6+ years of Software Engineering or related work experience.
• OR Master's degree in Engineering, Information Systems, Computer Engineering, Electrical Engineering, Computer Science, or related field and 5+ years of Software Engineering or related work experience.
• OR PhD in Engineering, Information Systems, Computer Engineering, Electrical Engineering, Computer Science, or related field and 4+ years of Software Engineering or related work experience.
• AND 3+ years of work experience with Programming Languages such as Python, Mojo, Rust, C++, etc.

Benefits

• Amazing Team: We are a progressive and agile team with some of the industry’s best engineering and product leaders.
• World-class Benefits: Comprehensive healthcare coverage, retirement and savings programs, employee stock purchase opportunities, paid time off, wellbeing resources, family support programs, and learning and development opportunities.
• Competitive Compensation: Strong compensation packages, including RSU grants.
• Team Building Events: Regular team onsites and local meetups in Los Altos, CA, as well as different cities.