Senior iOS Software Engineer - Geneva

Proton•Geneva, IL

1d•Onsite

About The Position

Based in our Geneva office, you’ll join one of several high-impact product teams across Proton Mail, Proton Drive, Proton VPN, Lumo, and Meet, helping build privacy-first products used by millions around the world. From secure communication and encrypted cloud storage to privacy-preserving AI experiences and next-generation 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 experiences on Apple platforms, helping define what “great” looks like for privacy-focused consumer products at scale.

Requirements

Extensive experience building and shipping high-quality iOS applications.
Strong experience building maintainable, scalable, and testable mobile architectures.
Comfortable working across large codebases and collaborating across multiple teams.
Experience mentoring engineers and raising the technical bar within a team.
Strong understanding of performance, concurrency, and mobile memory management.
Comfortable navigating ambiguity and contributing to product and technical discussions.

Nice To Haves

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 communicating with the iOS application via generic interfaces.