Steel is building open-source browser infrastructure for AI agents & apps. We make it easy for AI engineers to ship products that interact with the web using our Sessions API - An API that controls fleets of browser sessions in the cloud while we handle everything from scaling to antibot and more.
Our tech stack:
- Frontend: Vanilla React + TailwindCSS + Shadcn, built with Vite, deployed on Vercel
- Backend: Fastify, Node.js, Zod, NATs, Drizzle with Redis, PostgreSQL, and S3
- Infrastructure: Pulumi, Go, Firecracker VMs, Docker
- Languages: Mostly Typescript, Rust, Go
With over 6,000 GitHub stars, dozens of paying customers, and millions of sessions served, we grew our platform 50x in 2025 purely through word-of-mouth and our open-source community. Backed by world-class investors, we're building a small, talent-dense team that's shaping the future of how humans & agents interact with the internet.
Current roles (all roles include competitive comp + equity):
- Infrastructure Engineer: Design, optimize, and scale our browser VM infrastructure
- Applied AI Engineer: Build on agent frameworks, integrations, and real-world AI use cases
- Founding Growth Lead: Own the growth machine to turn insane organic traction into a category-defining brand
- Founding GTM Lead: Be our first sales hire, closing deals with AI startups transforming entire industries
To learn more & apply (Mention HN): https://jobs.ashbyhq.com/steel
P.S. If you're feeling spicy, try our optional hiring challenge and submit the flag with your application once you reach the final step → https://challenge.steel.dev