Note: The job is a remote job and is open to candidates in USA. CoreWeave, the AI Hyperscaler™, acquired Weights & Biases to create a powerful platform for AI development and deployment. The Staff Engineer on the Performance Engineering team will focus on enhancing system performance and scalability, working collaboratively across various teams to ensure efficient and reliable experiences.
Responsibilities
- Take technical ownership of complex performance challenges across the W&B platform and infrastructure
- Design and lead experiments to improve system scalability and latency
- Develop standardized benchmarking and load testing frameworks
- Drive initiatives to prevent regressions across product surfaces
- Collaborate closely with product, infrastructure, and SRE teams
- Blend investigation, architecture, and enablement to help teams measure, understand, and continuously improve performance
Skills
- 8+ years of experience as a software engineer, with at least 2 years focused on performance optimization, systems scalability, or observability
- Proficiency in at least one of Go, Python, or TypeScript, with strong systems-level debugging and profiling skills
- Deep understanding of distributed systems concepts (caching, queuing, concurrency, resource contention, etc.) and their performance implications
- Experience designing and implementing load testing, benchmarking, or performance regression frameworks (e.g., Locust, Gatling, k6, custom solutions)
- Familiarity with metrics and tracing systems (Prometheus, Grafana, OpenTelemetry, Datadog, etc.) and performance data analysis
- Experience integrating performance measurement into CI/CD pipelines
- Ability to design experiments, analyze large datasets, and draw actionable conclusions
- Proven track record of driving cross-functional technical initiatives from design through adoption
- Prior experience in performance engineering or SRE at scale (e.g., supporting multi-region, high-throughput systems)
- Familiarity with frontend performance monitoring and web vitals
- Experience building developer-facing tools or frameworks
- Background in data systems, observability, or ML infrastructure
- Experience contributing to open-source performance or benchmarking tools
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
Company Overview