Senior iOS Software Engineer

Requirements

• You have extensive experience building and shipping high-quality iOS applications
• You care deeply about product quality, usability, and delivering exceptional user experiences
• 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, and mobile memory management
• 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 communicating with the iOS application via generic interfaces

What the job involves

• Based in our London office, you’ll join one of several high-impact product teams across Proton Mail, Proton Drive, and Proton Wallet/Payments and Proton Account, helping build privacy-first products used by millions around the world
• Whether it’s secure communication, encrypted cloud storage, or the future of private financial 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

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