Multiple Positions

We’re building the continuous performance optimization platform. We help engineering teams catch performance regressions before they ship, with sub-1% measurement variance. We’re already trusted by teams at Cloudflare, Vercel, Mozilla, Pydantic, and Astral (Ruff, uv). We’re a small, deeply technical team looking for engineers who want real ownership and the chance to ship end-to-end. Competitive salary, stock options, generous PTO. Senior Systems Engineer: CPU simulation tooling, language runtime internals (CPython, V8), kernel I/O emulation. C/C++/Rust/Zig. Senior Full-stack Engineer: React/Next.js, Node.js/TypeScript/GraphQL, GitHub/GitLab integrations, Rust data pipelines. Senior/Lead AI Engineer: Agent layer, eval methodology, context pipelines, model selection. Python/FastAPI. Graphic/UI Designer: Visual identity and product experience for a developer tool. More details at https://careers.codspeed.io (https://careers.codspeed.io). Apply at careers@codspeed.io