Meet Alex Rattray, Stainless Founder — Bio + How to Reach Out

Last updated: 2025-11-08

Who is Alex Rattray?

Alex Rattray is the founder of Stainless, a company specializing in SDK generation for APIs, including those used by leading AI platforms like OpenAI and Anthropic. He previously worked at Stripe, where he designed and co-built the API developer experience. Rattray's mission is to improve API developer tools and SDK quality across industries.

Alex Rattray's Work History

Alex Rattray has a background in engineering and product development, with extensive experience in API systems and developer tools. His career includes significant contributions at Stripe, where he focused on API SDKs and documentation, before founding Stainless to scale SDK generation for various companies.

• 2019-01-01 - 2022-01-01 - Senior Engineer / Product Lead, Stripe
• 2022-01-01 - Founder & CEO, Stainless

Alex Rattray's Education

Alex Rattray studied economics at the University of Pennsylvania and developed programming skills on the side, which led to his engineering career.

• University of Pennsylvania - Bachelor of Arts in Economics (2015-09-01 - 2019-05-31)

About Stainless

Stainless is a software company that provides SDK generation tools for APIs, helping companies like OpenAI, Anthropic, and Cloudflare build high-quality, up-to-date SDKs in multiple programming languages to improve developer experience and API adoption.

Stainless Funding

Stainless raised a $3.5 million seed round with participation from Sequoia and The General Partnership, and later secured a Series A funding of $25 million led by a16z, with additional investors including Sequoia and Felicis.

How to Reach Alex Rattray?

You can reach Alex Rattray at *******@stainlessapi.com or by calling +1 **********. To get Alex Rattray's contact information and other startup founders like this, sign up for a free account at Anybody.com.