Senior Android Engineer — Privacy-First, Kotlin & Compose

Proton AG; Paris; On-site; EUR 60,000 - 115,000; Full time

Benefits offered by this job

Stock options

Health coverage

Wellness support

Lunch and snacks provided

Flexible working

Job summary

Proton AG is seeking a Senior Android Software Engineer in Paris to join a high-impact product team. You will build Android experiences using Kotlin and Jetpack Compose, contribute to a privacy-first ecosystem, and collaborate with Protons across Inbox, Account, and Meet initiatives.

You will own features end-to-end, optimize performance, and contribute to scalable mobile architectures while mentoring peers and aligning with product goals.

Qualifications

• Extensive experience shipping Android apps with Kotlin.
• Strong Jetpack Compose and modern Android practices.

Responsibilities

• Own end-to-end feature delivery from scoping to release.
• Collaborate across multiple teams to build scalable mobile architectures.
• Mentor engineers and raise the technical bar within the team.

Skills

Kotlin

Jetpack Compose

Android architecture

End-to-end ownership

Performance optimization

Multithreading

Offline-first architectures

Privacy/security knowledge

Rust experience (plus)

Tools

Rust

Job description

Proton AG is seeking a Senior Android Software Engineer in Paris to join a high-impact product team. You will build Android experiences using Kotlin and Jetpack Compose, contribute to a privacy-first ecosystem, and collaborate with Protons across Inbox, Account, and Meet initiatives.

You will own features end-to-end, optimize performance, and contribute to scalable mobile architectures while mentoring peers and aligning with product goals.