Y Combinator 
Techstars Senior Backend Engineer – Scalable Payments APIs, Equity
Summary
Senior Backend Engineer at Flex in San Francisco building and scaling payments, billing, and identity APIs with a focus on reliability and performance.
Flex is seeking a Senior Software Engineer to build and scale backend systems powering our payments, billing, identity, and partner integrations. You will design, implement, test, and roll out services with a focus on reliability and performance.
Join a globally distributed team and drive API scoping, design, and production deployments with minimal supervision, working in a hybrid environment in San Francisco.