Modular · 1 week ago
Mojo Compiler Engineer
United States
Full-time
Remote
Mid Level
$135K/yr - $242K/yr
3+ years expModular is on a mission to revolutionize AI infrastructure by rebuilding the AI software stack. They are seeking a Mojo Compiler Engineer to design and evolve the Mojo compiler, focusing on creating new language features and optimizing performance for AI systems.
AI InfrastructureArtificial Intelligence (AI)Generative AIMachine LearningSoftware
Responsibilities
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
Qualification
Required
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
Preferred
Experience with HPC or accelerator ecosystems (CUDA, SYCL, OpenCL, etc.)
Experience working in type-system-heavy programming languages (Rust, Scala, Haskell)
Benefits
Premier insurance plans
Up to 5% 401k matching
Flexible paid time off
Annual target bonus
Equity
Benefits
Company
Modular
Modular provides AI infrastructure for deployment, serving, and programming GPUs.
51-200 employees
H1B Sponsorship
Modular has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (10)
2024 (6)
2023 (8)
2022 (4)
Funding
Current Stage
Growth StageTotal Funding
$380MKey Investors
US Innovative Technology FundGeneral CatalystGoogle Ventures
2025-09-24Series C· $250M
2023-08-24Series B· $100M
2022-06-30Seed· $30M
Leadership Team
Chris Lattner
CEO + Co-Founder
Tim Davis
Co-Founder & President
Recent News
General Catalyst
2026-01-14
General Catalyst
2026-01-14
Greylock
2025-12-29
Company data provided by crunchbase