Stainless

Stainless is revolutionizing the way APIs are built. We create best-in-class SDKs, empowering developers with typesafe client libraries in their preferred languages. Our focus allows API providers to concentrate on their core business, knowing their users will have an excellent developer experience. We are shaping the future of API development. Our tech stack is built upon technologies like SSL by Default, Cloudflare CDN, and leverages a modern infrastructure. At Stainless, you'll be working on cutting-edge projects, contributing to codebases used by industry leaders like OpenAI, Anthropic, and Cloudflare. We value a culture of continuous learning and collaboration, where engineers are encouraged to explore new technologies and contribute across multiple languages. Our engineering team emphasizes code quality, developer experience, and the ability to quickly adapt to new challenges. Headquartered in NYC, with a growing team of 20-40 professionals in 2025, we are a fast-growing startup backed by over $35 million in funding from a16z, Sequoia, and founders/C-levels from Stripe, Datadog, Segment, Linear, and more. We offer competitive salaries, generous equity, and comprehensive benefits, including flexible PTO, company-wide vacations, and flexible WFH policies, including "remote February". Stainless is committed to creating a supportive and inclusive environment where every team member can thrive.