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Senior Software Engineer - GPU Kernel Authoring & Optimization

CoreWeave· Technology
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Sunnyvale, CA, Bellevue, WA$182k - $242k + equity + bonusFull-timePosted 3mo ago

About the role

Senior engineer role on CoreWeave's Benchmarking & Performance team focusing on GPU kernel authoring and optimization for high-performance model serving, with emphasis on end-to-end latency/throughput improvements and industry benchmarking such as MLPerf.

Responsibilities

  • Author, profile, and optimize CUDA kernels—GEMMs, attention, MoE routing, quantization, KV-cache, and fused epilogues—on the critical path of LLM inference.

Qualifications

  • 5+ years of experience building high-performance computing, GPU/accelerator software, or performance-critical systems.
  • Hands-on CUDA experience is required—you have written and optimized custom kernels and are fluent with the CUDA programming and memory model.
  • Deep understanding of GPU architecture and performance: tensor cores, warp/occupancy tuning, the memory hierarchy and bandwidth, NVLink/PCIe, and profiling with Nsight Compute/Systems.
  • Strong coding in C++ and Python; comfortable reading and writing low-level, performance-sensitive code.
  • Familiarity with model-serving stacks (vLLM, TensorRT-LLM, llm-d, SGLang) and the kernels that dominate their inference cost.
  • Strong communicator comfortable collaborating with cross-functional teams and external partners.

Skills

Required:CUDA kernel developmentC++PythonGPU architecture knowledgeNsight Compute/SystemsModel-serving stacks familiarityCommunication
Nice to have:Kernel optimization

Benefits

  • Medical, dental, and vision insurance - 100% paid for by CoreWeave
  • Company-paid Life Insurance
  • Voluntary supplemental life insurance
  • Short and long-term disability insurance
  • Flexible Spending Account
  • Health Savings Account
  • Tuition Reimbursement
  • Ability to Participate in Employee Stock Purchase Program (ESPP)
  • Mental Wellness Benefits through Spring Health
  • Family-Forming support provided by Carrot
  • Paid Parental Leave
  • Flexible, full-service childcare support with Kinside
  • 401(k) with a generous employer match
  • Flexible PTO
  • Catered lunch each day in our office and data center locations
  • A casual work environment
  • A work culture focused on innovative disruption
Last updated Aug 12, 2026. Interested? Apply on the company site.

About CoreWeave

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