Senior iOS Software Engineer - Paris

Proton; Paris; Sur place; EUR 60 000 - 80 000; Plein temps

Avantages offerts par ce poste

Stock Options

Health coverage

Flexible working hours

Office lunch and snacks

Transport coverage

Résumé du poste

Proton is seeking a Senior Engineer for its Paris office to work on high-impact product teams. You will focus on building high-quality iOS applications, collaborating with teams to enhance user experiences, and contributing to significant privacy-first products.

The ideal candidate has a strong background in mobile architecture, experience mentoring teams, and a commitment to product quality. Proton offers generous benefits, including stock options, learning opportunities, and flexible working arrangements to support your growth.

Qualifications

• Extensive experience building and shipping high-quality iOS applications.
• Strong experience in building maintainable, scalable, and testable mobile architectures.
• Experience mentoring engineers and raising the technical bar within a team.

Responsabilités

• Collaborate closely with product, design, and engineers across Proton.
• Build and ship high-quality experiences on Apple platforms.
• Contribute to product and technical discussions.

Connaissances

Building iOS applications

Product quality and usability

Mobile architecture

Mentoring engineers

Performance and concurrency

Privacy and security knowledge

Description du poste

Role

Based in our Paris office, you’ll join one of several high‑impact product teams focused on 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 experiences on Apple platforms, helping define what “great” looks like for privacy‑focused consumer products at scale.

What we are looking for

• 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 We Offer

• Work that Matters: millions of people trust Proton with their privacy. We answer only to our users — not advertisers, not investors with conflicting agendas, not governments. The work you do here is real, and the impact is measurable.
• Stock Options: at Proton, we all have the opportunity to be owners of the company. From day one, you have a real stake in what we're building. When Proton wins, you win.
• Technology: you'll get the right hardware and the right software you need to do your best work.
• Learning & Development: we invest in your growth because sharp people make us better. Proton is one of the fastest ways to accelerate your career because you'll be thrown into real challenges, with real ownership, from day one.
• Employee Benefits: your wellbeing isn't an afterthought. We offer strong health coverage, solid retirement options, generous leave, and wellness support so you can bring your best self to work every day.
• In‑Person Collaboration: Amazing things happen when passionate, smart, and purposeful people get together in the same room. With offices across Geneva, Zürich, Barcelona, London and more, you'll spend most of your time collaborating face‑to‑face with people who genuinely care about what they're building.
• Food: Lunch and snacks are on us every day in our offices so you can focus on the work and not on what's for lunch.
• Transport: getting to the office shouldn't cost you. We cover public transport, bike allowances, or parking, whichever works for you.
• Flexible Working: you own your schedule. Set hours that work for you and your team — because outcomes matter more than when the clock says you started.