Middleware Development Engineer (LLVM)

TL;DR

Middleware Development Engineer (LLVM/C++): Building an offloading runtime for heterogeneous compute across GPUs and CPUs within the LLVM ecosystem with an accent on core runtime APIs and driver-level backends. Focus on designing high-performance execution paths, implementing backends for CUDA/ROCm/Level Zero, and contributing to upstream LLVM.

Location: Hybrid in Gdansk, Poland

Company

hirify.global is a global leader in semiconductor design and software stacks, focusing on AI technologies and foundational hardware-software integration.

What you will do

• Design and implement runtime APIs within the liboffload project.
• Develop and evolve backends and adapters for driver-level stacks including Level Zero, CUDA, HIP/ROCm, and OpenCL.
• Contribute upstream code, reviews, and documentation to the LLVM community.
• Collaborate with compiler (Clang/LLVM IR/SPIR-V), runtime, and driver teams to implement new features.
• Engage with the open-source community through design proposals and community calls.

Requirements

• Strong systems programming in C/C++ with a track record of shipping low-level libraries or complex runtimes.
• Deep understanding of computer architecture, heterogeneous memory models, and concurrency.
• Experience debugging and profiling non-trivial software using symbolic debuggers and sanitizers.
• Excellent English communication skills for async discussions and RFCs in a distributed environment.
• Must be based in or able to work in a hybrid model in Gdansk, Poland.

Nice to have

• Familiarity with GPU programming stacks (CUDA, ROCm, OpenCL) and SPIR-V.
• Prior contributions to LLVM or experience with LLVM internals (libomptarget, TableGen).
• Proficiency with CMake, GitHub Actions, and Python for automation.

Culture & Benefits

• Competitive salary, stock programs, and quarterly bonuses.
• Comprehensive health package including medical plan, life insurance, and employee pension plan.
• Practical perks such as lunch cards, Multisport/Holiday cards, and exclusive employee discounts.
• Flexible working hours and a supportive environment that encourages innovation and professional growth.
• Access to advanced development programs, conferences, and a wide library of online courses.