Braintrust
Software Engineer, Developer Experience
San Francisco. Posted 5 months ago
The role
You will build tools for other engineers and own systems including local dev, CI, and the deploy pipeline. The role focuses on making shipping to production fast, safe, and reliable.
What you will do
- Work with the engineering team to find and remove friction
- Drive CI runtime down through parallelization, caching, sharding, test selection, and killing flakes
- Own the deploy pipeline including progressive rollouts, fast rollbacks, and clear signals
- Own the build toolchain including bundlers, compilers, and monorepo tooling
- Harden the supply chain using SBOMs, signed artifacts, locked-down GitHub Actions, secret hygiene, and provenance
- Build CLIs, GitHub Apps, and bots
Required qualifications
- 5+ years building developer tools, CI/CD, or platform infrastructure
- Track record of making slow, painful workflows fast and pleasant
- Deep GitHub expertise: Actions, Apps, APIs, merge queues, and branch protections
- Strong fluency with JavaScript/TypeScript build and bundling tools (esbuild, swc, Vite, Turbopack, tsc, pnpm)
- Comfortable profiling and optimizing across the stack using flamegraphs, tracing, and measurement
- Supply chain security experience: SBOMs, Sigstore/cosign, SLSA, GitHub Actions hardening
- Strong opinions on safe, reliable production deploys
Benefits
- Medical, dental, and vision insurance
- Daily lunch, snacks, and beverages
- Flexible time off
- Competitive salary and equity
- Wifi & cellphone stipend
About the company
Braintrust is the agent observability platform. It provides visibility to understand how agents behave in production and tools to improve them.