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Sr. Software Engineer - Perf and Benchmarking

CoreWeave

$139,000 - $204,000
Dec 18, 2025
Sunnyvale, CA, US
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CoreWeave is seeking a Senior Engineer to help build and scale a planet-scale performance data warehouse, enabling the company to deliver industry-leading performance benchmarking for AI and cloud infrastructure.

Requirements

  • 5+ years of experience building distributed systems, high-performance computing, or cloud services.
  • Strong coding in Python or Go (C++ a plus) and deep familiarity with networked systems and performance.
  • Hands-on experience with Kubernetes at production scale, CI/CD, and observability stacks (Prometheus, Grafana, OpenTelemetry).
  • Experience with performance-critical GPU systems (CUDA, NCCL, RDMA, NVLink/PCIe, memory bandwidth) and model-serving stacks (llm-d, vLLM, TensorRT-LLM, Megatron-LM).
  • Strong communicator comfortable collaborating with cross-functional teams and external partners.
  • Experience with time-series databases, LSM-based storage engines, or custom data pipelines.
  • Experience running MLPerf submissions or similar large-scale audited benchmarks.

Responsibilities

  • Build and improve Kubernetes-native benchmarking services that measure latency, throughput, jitter, and cost-per-request across CoreWeave’s compute stack.
  • Implement and maintain benchmarking workflows for end-to-end MLPerf Training and Inference runs, including workload setup, cluster configuration, runbooks, and result validation.
  • Lead design reviews and drive architecture within the team; decompose multi-service work into clear milestones.
  • Mentor junior engineers; review cross-team designs and elevate coding/testing standards.
  • Help ensure reproducible, well-documented benchmarking processes.

Other

  • Mentor junior engineers.
  • Collaborate with cross-functional teams and external partners.
  • Attend onboarding at one of CoreWeave’s hubs within the first month.
  • Hybrid work environment with potential for remote work based on location and role requirements.
  • Eligibility to access export-controlled information as defined by U.S. Government regulations.