🚀 Welcome Sergei Rybalkin to the Kotlin Foundation Board!

We’re excited to welcome Sergei Rybalkin, Senior Staff Software Engineer at Meta, as the newest member of the Kotlin Foundation Board.

With Meta joining as a Gold Member, Sergei brings over a decade of hands-on experience in advancing Kotlin across large-scale, production environments.

Before Meta, Sergei championed Kotlin adoption at Alibaba Group, working on server-side architecture, function-as-a-service (FaaS) platforms, and JVM frameworks. He’s also the author of open-source tools like Kohttp, and a contributor to Redex, Meta’s Android bytecode optimizer and Buck2, a build tool for large scale code based that supports Kotlin and Android.

A frequent speaker at events like FOSDEM and Kotlin Dev Day, Sergei is known in the community for his practical, performance-focused talks that address real-world challenges in Kotlin development at scale.

He joins the Foundation at a pivotal moment in our mission to bring Kotlin everywhere—across platforms, industries, and teams. With his technical leadership and community perspective, Sergei will play a key role in shaping the future of the language and its ecosystem.

Please join us in giving him a warm welcome! 👏