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# Senior Android Software Engineer - Paris

- **Company:** Proton AG
- **Location:** Paris, France
- **Experience:** Expert
- **Salary:** €60,000.0 - €115,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Android Software Development, Collaborative Software, Memory Management, Sync (Unix), Multithreading, Caching, Kotlin, Jetpack Compose
- **Published:** July 22, 2026
- **Apply:** https://fr.indeed.com/viewjob?jk=08005ce3fb8337fb

## About the Role

* You have extensive experience building and shipping high-quality Android applications using Kotlin
 * You have strong experience with Jetpack Compose and modern Android development practices
 * You care deeply about product quality, usability, and delivering exceptional user experiences
 * You have experience taking end-to-end ownership of features, from scoping and technical design through to delivery and iteration
 * You have strong experience building maintainable, scalable, and testable mobile architectures
 * You are comfortable working across large codebases and collaborating across multiple teams
 * You have experience mentoring engineers and raising the technical bar within a team
 * You have a strong understanding of performance, concurrency, multithreading, and mobile memory management
 * You understand mobile scalability considerations, including caching, network usage, responsiveness, and offline behaviour
 * You are comfortable navigating ambiguity and contributing to product and technical discussions
 * Experience with privacy, security, encryption, sync systems, or offline-first architectures is a strong plus
 * Rust experience is a plus, but not required, as we continue moving towards a platform-independent Rust logical core that communicates with our Android applications through generic interfaces

## Description

Based in our Paris office, you'll join one of several high-impact product teams focused on Inbox (Proton Mail and Calendar), Proton Account, Lumo, and Meet, helping build the foundational experiences that power Proton's ecosystem and the next generation of privacy-first products. From authentication, identity, and account security to privacy-preserving AI experiences and secure online collaboration tools, you'll work on technically ambitious products with real-world impact. As a senior engineer, you'll collaborate closely with product, design, and engineers across Proton to build and ship high-quality Android experiences using Kotlin, Jetpack Compose, and an increasingly shared Rust core, helping define what "great" looks like for privacy-focused consumer products at scale.


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