Sr. Software Engineer - Perf and Benchmarking

We are seeking a Senior Software Engineer to join our Benchmarking & Performance team at CoreWeave. As a Senior Engineer, you will play a crucial role in designing, building, and improving our planet-scale performance data warehouse. You will be responsible for ingesting, storing, transforming, and analyzing performance events across our global infrastructure. Additionally, you will contribute to achieving industry-leading end-to-end performance benchmarking publications such as MLPerf.

Responsibilities:

• Design and improve Kubernetes-native benchmarking services to 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.
• Lead design reviews and drive architecture within the team.
• Mentor junior engineers and review cross-team designs.
• Ensure reproducible and well-documented benchmarking processes.

Requirements:

• 5+ years of experience building distributed systems, high-performance computing, or cloud services.
• Strong coding skills in Python or Go, with deep familiarity with networked systems and performance.
• Hands-on experience with Kubernetes at production scale, CI/CD, and observability stacks.
• Experience with performance-critical GPU systems and model-serving stacks.
• Strong communicator comfortable collaborating with cross-functional teams and external partners.

Nice to have:

• Experience with time-series databases, LSM-based storage engines, or custom data pipelines.
• Experience running MLPerf submissions or similar large-scale audited benchmarks.
• Contributions to OSS projects such as llm-d, vLLM, or PyTorch.
• Exposure to benchmarking large GPU fleets or multi-region clusters.
• Experience with CUDA kernels, NCCL/SHARP, RDMA/NUMA, or GPU interconnect topologies.

What We Offer:

• Competitive salary ranging from $139,000 to $204,000.
• Comprehensive benefits package including medical, dental, and vision insurance, company-paid life insurance, and flexible spending account.
• Opportunity to participate in employee stock purchase program and 401(k) with generous employer match.
• Flexible PTO and catered lunch in office and data center locations.
• Casual work environment and culture focused on innovative disruption.