Software Engineer (Stagehand)

Browserbase

San Francisco, CA, United States permanent

Posted: August 25, 2025

Job Description

Stagehand is Browserbase’s framework for automating browsers with code. The Stagehand team creates developer tools at the intersection of AI and open source — making browser automation smarter, simpler, and more powerful.

What you'll do

• Build, operate, and grow the Stagehand framework — developer-first APIs with ~2M monthly downloads and ~17k stars. Design and implement tools that make automating the web simple and powerful.

• Work with frontier AI labs (OpenAI, Google, and others) to improve models, benchmark capabilities, and make them more accessible to developers.

• Deploy production-ready AI solutions that impact millions of customers, shaping the future of the web.

• Help define, scope, and prioritize projects that shape the future of developer tooling.

• Document as you go and share your knowledge with the team.

Technical skills:

• Strong coding skills: preferably TypeScript; also valuable: Python/Go.

• Experience building developer tools, frameworks, or libraries that others depend on.

• Experience building AI agents/LLMs, distributed systems, or applying reinforcement learning.

• Familiarity with web automation frameworks (Puppeteer, Playwright, Selenium) or web scraping; huge bonus: Chrome DevTools Protocol (CDP) experience.

• Track record of open source contributions or public developer projects.

You're a good fit if you:

• Have high agency: you can set direction, make judgment calls, and drive projects forward without waiting for perfect clarity.

• Have a strong sense of ownership and bias toward action.

• Can drive projects independently, with high accountability without much outside input.

• Communicate clearly in writing and in person, and choose the right medium for the message.

• Are adaptable and able to dive into unfamiliar systems, learn quickly, and make sound technical decisions.

• Enjoy collaborating with a small, ambitious team in a fast-paced environment.

• Are excited to work 5 days a week in our San Francisco HQ (or open to relocating here).

Why join us:

• Shape the future of browser automation with AI-driven developer tools.

• Work in the open: collaborate with and contribute to the broader open source community.

• Collaborate with a small, high-bar team of engineers who care deeply about quality.

• Join an ambitious startup where your impact will be felt immediately.

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