Braintrust

Software Engineer, Developer Experience

San Francisco
Level
Mid
Work type
On-site · San Francisco

Not stated in the posting: salary, visa.

Open. First seen 6 November 2026.

Apply on the company's site →

About the role

Braintrust's standard text

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 productive
  • Drive CI runtime down: parallelization, caching, sharding, test selection, and killing flakes
  • Own the deploy pipeline: progressive rollouts, fast rollbacks, and clear signals when something is wrong
  • Own the our build toolchain — bundlers, compilers, monorepo tooling — and keep cold builds and rebuilds fast as the codebase and archictecture grows
  • Harden our supply chain: SBOMs, signed artifacts, locked-down GitHub Actions, secret hygiene, and provenance for every build
  • Build 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 infrastructure
  • A track record of taking slow, painful workflows and making them 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) and a clear sense of when to reach for which
  • Comfortable profiling and optimizing across the stack — flamegraphs, tracing, and just plain measurement
  • Supply chain security experience: SBOMs, Sigstore/cosign, SLSA, GitHub Actions hardening
  • Strong opinions on safe, reliable production deploys

Benefits include

  • Medical, dental, and vision insurance
  • Daily lunch, snacks, and beverages
  • Flexible time off
  • Competitive salary and equity
  • Wifi & cellphone stipend
Braintrust's standard text

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.

What this role asks for

Particular to this role

JavaScript

Rare in Braintrust's other 23 open postings.

In most of Braintrust's ads

Cloudflare

Named in most of its open postings, whatever the role.

73% of this description is written for the role. The rest is Braintrust's standard text, folded away below.

Compared with Braintrust's other open jobs.

The team: Engineering HIRES STEADILY

This role is one of 14 open in Engineering. 6 were posted in the last 30 days and the oldest in March: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

Cloudflare (14 of 14), TypeScript (8 of 14), CI/CD (6 of 14), LLM (6 of 14), GitHub (4 of 14), Golang (4 of 14), JavaScript (4 of 14)

OTHER ROLES ON THIS TEAM

From the team and dates on Braintrust's own job board.

Other openings for this role

2 open postings for this role in San Francisco, first posted 2 October 2026. The company is likely hiring for more than one position. None has been taken down and posted again.

See Software Engineer salaries in San Francisco →

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