Upsun (formerly Platform.sh) Email Format
Software DevelopmentÎle-de-france, France201-500 Employees
Upsun, formerly Platform.sh, is a software development company based in Paris, France, at 22 Rue de Palestro, Île-de-France 75002, with 201-500 employees. The company provides a cloud application platform that enables developers, DevOps engineers, and platform teams to build, ship, and scale applications without managing backend infrastructure. It positions itself to support hybrid teams where AI agents write and test code while humans focus on solving important problems, offering features such as predictable performance, secure environments by default, real-time observability, fast cloning and provisioning, and AI-ready integrations. Upsun maintains a remote, global workforce with a multicultural environment and a commitment to open source and openness, guided by values of positive impact, care for each other, and aiming for the stars. Recent developments include the appointment of Stephane Kasriel to the board in 2026 and a partnership with Edgee in 2025; reported revenue is in the range of $250 million to $500 million.