Proton is building a privacy‐first internet experience and offers Proton Mail, Proton VPN, Proton Drive and more. We are seeking a senior Android engineer to own mobile development for Proton Pass and SimpleLogin, combining Kotlin and Rust. You will take end‐to‐end ownership of the mobile stack, drive performance, scalability and a strong user experience across devices. Join a global team with offices in several cities and a adaptable hybrid work model.