Staff Software Engineer, Performance- Weights & Biases
$188k/y-$275k/y
a day ago
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HybridFull-timeSenior
Summary
Weights & Biases is seeking a Staff Software Engineer, Performance to join their team in Sunnyvale, CA. The role involves taking technical ownership of complex performance challenges across the W&B platform and infrastructure.
About the Role
As a Staff Engineer on the Performance Engineering team, you will design and lead experiments to improve system scalability and latency, develop standardized benchmarking and load testing frameworks, and drive initiatives to prevent regressions across product surfaces. You will collaborate closely with product, infrastructure, and SRE teams, blending investigation, architecture, and enablement to help teams measure, understand, and continuously improve performance.
About You
Required:
- 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 and their performance implications.
- Experience designing and implementing load testing, benchmarking, or performance regression frameworks.
- Familiarity with metrics and tracing systems 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.
Preferred:
- Prior experience in performance engineering or SRE at scale.
- 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
Weights & Biases
Weights & Biases: the AI developer platform. Build better models faster, fine-tune LLMs, develop GenAI applications with confidence, all in one system of record developers are excited to use. W&B Models is the MLOps solution used by foundation model builders and enterprises who are training, fine-tuning, and deploying models into production. W&B Weave is the LLMOps solution for software developers who want a lightweight but powerful toolset to help them track and evaluate LLM applications. Weights & Biases is trusted by over a 1,000 companies to productionize AI at scale including teams at OpenAI, Meta, NVIDIA, Cohere, Toyota, Square, Salesforce, and Microsoft. Sign up for a 30-day free trial today at http://wandb.me/trial.
Sunnyvale, CA