How Major Metros Run on Kotlin Multiplatform

Published March 05, 2026
Every time you tap through a subway gate in New York City, you're using Kotlin Multiplatform! In this episode, we sit down with Paweł Kwieciński from Masabi to explore how they brought a decade-old Java codebase to KMP, powering ticket validation across mobile apps, embedded devices, and backend systems for public transit agencies worldwide.

About Paweł Kwieciński

Paweł Kwieciński works at Masabi, where he helped bring a decade-old Java codebase to Kotlin Multiplatform for transit ticketing systems used worldwide.

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