Staff Software Engineer, Performance- Weights & Biases
CoreWeave · San Francisco, CA / Sunnyvale, CA / Bellevue, WA / Remote - US
About this role
**CoreWeave — Staff Software Engineer (Performance: Weights & Biases)** ## About the role As a **Staff Engineer** on the **Performance Engineering** team, you’ll take technical ownership of complex performance challenges across the W&B platform and infrastructure. You’ll design and lead experiments to improve **scalability** and **latency**, develop standardized **benchmarking** and **load testing** frameworks, and drive initiatives to prevent **performance regressions** across product surfaces. You’ll collaborate closely with **product, infrastructure, and SRE** teams—blending investigation, architecture, and enablement so other teams can measure, understand, and continuously improve performance. ## What you’ll do - Embed performance thinking across the development lifecycle (diagnose issues, design scalable patterns, build enabling tools) - Lead experiments to improve system scalability and latency - Create and standardize benchmarking + load testing frameworks - Prevent regressions across product surfaces - Integrate performance measurement into CI/CD pipelines - Analyze performance data and translate insights into actionable outcomes ## Who you are - **8+ years** software engineering experience; **2+ years** focused on performance optimization, systems scalability, or observability - Proficiency in **Go, Python, or TypeScript**, with strong systems-level debugging/profiling - Deep understanding of **distributed systems** and performance implications (caching, queuing, concurrency, resource contention, etc.) - Experience building **load testing / benchmarking / performance regression** frameworks (e.g., Locust, Gatling, k6, or custom) - Familiarity with **metrics + tracing** (Prometheus, Grafana, OpenTelemetry, Datadog, etc.) and performance data analysis - Ability to design experiments, analyze large datasets, and draw actionable conclusions - Proven track record driving cross-functional technical initiatives from design through adoption ## Preferred - Performance engineering or SRE experience at scale (e.g., multi-region, high-throughput systems) - Frontend performance monitoring / web vitals - Experience building developer-facing tools or frameworks - Background in data systems, observability, or ML infrastructure - Contributions to open-source performance or benchmarking tools ## Why CoreWeave? - Hyper-growth environment with a focus on learning and fast iteration - Core values: **Be Curious at Your Core**, **Act Like an Owner**, **Empower Employees**, **Deliver Best-in-Class Client Experiences**, **Achieve More Together** ## Compensation & benefits (high level) - Base salary range: **$188,000 – $275,000** (based on experience, skills, and location) - Total rewards may include **discretionary bonus**, **equity**, and a comprehensive benefits program (eligibility-dependent) **US benefits include (among others):** medical/dental/vision (100% paid), life/disability coverage, HSA/FSA, tuition reimbursement, ESPP, mental wellness benefits, family-forming support, paid parental leave, childcare support, 401(k) match, flexible PTO, catered meals, and a casual work environment. *California applicants: CCPA notice applies.* *CoreWeave is an equal opportunity employer committed to an inclusive workplace.*
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