Software Engineer, Developer Experience

About The Company Braintrust is the agent observability platform. By actively applying intelligence to agent traces and automatically surfacing the most critical patterns, Braintrust gives teams the visibility to understand how agents behave in production and the tools to improve them. Teams at Notion, Stripe, Box, OpenAI, and Cloudflare use Braintrust to trace their agents, find the issues in their observability data, and run evals that tell them how to improve. About The Role We're looking for an Engineer who loves building tools for other engineers. You'll own the systems we touch every day — local dev, CI, and the deploy pipeline — and make shipping to production fast, safe, and reliable. The work compounds across every engineer at the company and is very important to our whole team What You'll Do Work directly with the engineering team to find friction and remove it — help them be nimble, happy and productiveDrive CI runtime down: parallelization, caching, sharding, test selection, and killing flakesOwn the deploy pipeline: progressive rollouts, fast rollbacks, and clear signals when something is wrongOwn the our build toolchain — bundlers, compilers, monorepo tooling — and keep cold builds and rebuilds fast as the codebase and archictecture growsHarden our supply chain: SBOMs, signed artifacts, locked-down GitHub Actions, secret hygiene, and provenance for every buildBuild CLIs, GitHub Apps, and bots that make the right thing the easy thing Ideal candidate credentials 5+ years building developer tools, CI/CD, or platform infrastructureA track record of taking slow, painful workflows and making them fast and pleasantDeep GitHub expertise: Actions, Apps, APIs, merge queues, and branch protectionsStrong fluency with JavaScript/TypeScript build and bundling tools (esbuild, swc, Vite, Turbopack, tsc, pnpm) and a clear sense of when to reach for whichComfortable profiling and optimizing across the stack — flamegraphs, tracing, and just plain measurementSupply chain security experience: SBOMs, Sigstore/cosign, SLSA, GitHub Actions hardeningStrong opinions on safe, reliable production deploys Benefits include Medical, dental, and vision insuranceDaily lunch, snacks, and beveragesFlexible time offCompetitive salary and equityWifi & cellphone stipend Equal opportunity Braintrust is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.