CodSpeed

Building a continuous performance optimization platform to catch performance regressions with sub-1% measurement variance. Trusted by teams at Cloudflare, Vercel, Mozilla, Pydantic, and Astral. Small, deeply technical team offering ownership; competitive salary, stock options, generous PTO. Roles include Senior Systems Engineer (CPU simulation tooling, language runtime internals, kernel I/O emulation), Senior Full-stack Engineer (React/Next.js, Node.js/TypeScript, GraphQL, integrations, Rust data pipelines), Senior/Lead AI Engineer (agent layer, eval methodology, context pipelines, model selection, Python/FastAPI), and Graphic/UI Designer (visual identity and product experience). More details and apply at careers.codspeed.io or careers@codspeed.io.