Alex Rattray founded Stainless to give API users carefully designed SDKs and developer tools. Stainless joined Anthropic in 2026, continuing that work around the Claude platform and connections between agents and external systems. A former Stripe engineer, Rattray’s work focuses on the interfaces that make complex software feel coherent, reliable, and natural to use.
Alex Rattray founded Stainless to give API users carefully designed SDKs and developer tools. Stainless joined Anthropic in 2026, continuing that work around the Claude platform and connections between agents and external systems. A former Stripe engineer, Rattray’s work focuses on the interfaces that make complex software feel coherent, reliable, and natural to use.
Career
AStainless Team at Anthropic from 2026 to Present
Founder and CEO; joined Anthropic in 2026 at Stainless from 2022 to 2026SSoftware Engineer, Developer Tools at Stripe until Past