AI Kernel Optimization Senior Engineer

The role

As Senior AI Kernel Optimization Engineer you will lead the optimization of high-performance kernels to push the limits of AI Inference on Openchip RISC-V platforms.

You will design implement and optimize AI compute kernels (Gen AI Large Language Model AI Vision CNNs etc) and runtime components to fully exploit the underlying hardware architecture from vector/matrix units and memory hierarchies down to the assembly level.

Your work will directly influence how efficiently AI models run on Openchip SoCs shaping the performance of next-generation inference accelerators. You will collaborate closely with hardware architects compiler engineers and AI framework developers to achieve optimal hardwaresoftware co-design.

Key responsibilities

• Drive the development optimization profiling of AI compute-intensive kernels (e.g. GEMM attention activations) targeting Openchip RISC-V architectures.
• Identify and resolve performance bottlenecks at the ISA compiler and runtime levels.
• Collaborate with the hardware and architecture teams to guide design decisions that improve real-world performance.
• Give orientation for the development and tuning of AI runtime and graph execution engines.
• Implement performance analysis tools and scripts to automate profiling and validation.
• Work with AI frameworks (e.g. vLLM PyTorch ONNX Runtime TensorRT TVM) to ensure efficient mapping to Openchip targets.
• Stay up to date on AI kernel optimization trends emerging hardware acceleration techniques and open-source contributions.
• Review and mentor other AI Kernel Optimization Engineer in the team.

Required qualifications

• MSc or PhD in Computer Engineering or Computer Science or equivalent practical experience.
• 7 years of experience in performance optimization for AI Inference (or HPC use cases).

Technical skills

• Strong background in low-level performance optimization (vectorization memory access optimization loop unrolling instruction scheduling data-tiling etc.).
• Proficiency in C/C and good understanding of assembly-level optimizations (SIMD intrinsics compiler flags).
• Solid understanding of CPU/GPU/AI accelerator architecture (pipelines caches memory hierarchies compute units).
• Experience with RISC-V architectures or other custom ISAs.
• Experience with profiling and performance analysis tools (perf VTune nvprof etc.).
• Strong knowledge of parallel programming (SIMD multithreading OpenMP CUDA or similar).
• Solid software engineering skills (version control CI/CD testing).

Nice to have

• Experience with AI inference workloads or libraries (e.g. BLIS cuDNN oneDNN TVM or similar).
• Familiarity with MLIR/LLVM or other compiler infrastructures.
• Contributions to open-source AI inference engines or kernel libraries.
• Understanding of chiplet-based architecture or heterogeneous computing (e.g. NUMA)
• Experience with quantization and mixed precision inference.

Soft Skills

• Passion for performance and detail-oriented mindset.
• Strong analytical and problem-solving abilities.
• Leadership collaborative and open to cross-disciplinary work.
• Comfortable working in an international fast-evolving startup environment.

What we offer

• Contract: Permanent contract (CDI)
• Start date: Q2 2026
• Location: Montbonnot-Saint-Martin (near Grenoble)
• Remote policy: Up to 2 days per week remote work possible
• Benefits: Meal vouchers Premium health coverage Sustainable mobility incentives Generous paternity leave etc.
• We offer a remuneration package that values your experience
• We believe in investing in our employees and providing them with opportunities for growth and career development.
• Join an innovative team and experience company growth.
• A chance to work at one of the most transformative AI and silicon engineering companies in Europe.
• Opportunity to travel to other countries in Europe to meet the teams collaborate and drive solutions

We are looking for outstanding people willing to join our mission to change the silicon industry and help build

a better world. If you identify with Openchip please contact us.

At Openchip & Software Technologies S.L. we believe a diverse and inclusive team is the key to groundbreaking

ideas. We foster a work environment where everyone feels valued respected and empowered to reach their full

potential - regardless of race gender ethnicity sexual orientation or gender identity.