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Software Engineer, Product

Braintrust Data — Tracked from its ashby job board

San Francisco · New York City · Seattle Mid Posted Mar 29, 2024
TypeScriptSQLReactNext.jsFrontendAI/LLM

About the role

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 a product engineer who is passionate about building tools that users love and use every day. You'll work on the core product, hang out with users (developers, product managers, and designers working in AI), and play a key role in shaping the roadmap.

Under the hood, Braintrust is a high performance, local-first, visualization-heavy UI built with modern Typescript and React. Our users work at some of the world's best technology companies and expect our product to be lightning fast, reliable, and intuitive.

WHAT YOU'LL DO

Core responsibilities:

- Ensuring our customers always have a frictionless experience for enabling AI observability in their systems.

- Contribute to foundation UI architecture that focuses on performance and efficient data loading patterns.

Build the user-facing pieces of Braintrust, such as:

- A first-class prompt playground experience supporting multiple models across thousands of user inputs.

- A system for prompt management, configuration, and versioned comparisons.

- A fully multiplayer, scalable human review system.

- LLM output analysis and comparison across arbitrarily large datasets.

IDEAL CANDIDATE CREDENTIALS

- Expert-level understanding of Typescript, React, HTML, CSS, SQL, NextJS

- Previous experience founding or working at startups is a plus

- Has written prompts / tinkered with GPT models and apps

BENEFITS INCLUDE

- Medical, dental, and vision insurance

- Daily lunch, snacks, and beverages

- Flexible time off

- Competitive salary and equity

- Wifi & 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.

What the index says about this role

  • First seen by JobLarper — Aug 2, 2026, 6 days ago. Older postings collect hundreds of applicants — a tailored résumé matters more the longer a role has been live.
  • No pay range in our index for this listing. Across 1,685 indexed Software Engineer roles in US that do publish one, the middle half sits between $185k and $285k, median $225k — JobLarper's read of the market, not a figure from Braintrust Data.
  • What Software Engineer roles ask for — across 10,230 indexed openings: REST/APIs (46%), Backend (42%), Cloud (38%), Python (38%), Go (25%). This posting names AI/LLM, Frontend.
  • Braintrust Data is hiring actively — 13 open roles indexed.

Derived from the 27,000 roles JobLarper indexes daily from official company boards — not from the job description above.

⚡ JobLarper watched this role appear on Braintrust Data's official board on Mar 29, 2024. Sign up free to get alerted minutes after roles like this go live, and tailor your real résumé to the exact description — nothing invented.

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