Senior iOS Engineer (VPN)

Barcelona; Vilnius; Geneva Join Proton and build a better internet where privacy is the default At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations. Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online. Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity to work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions. We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here! The VPN Team The VPN team is focused on building the best and most trustworthy VPN in the world. We aim to provide the best user experience to millions of people around the world willing to take back their online privacy while providing sophisticated technologies to bypass network restrictions in highly censored countries. The Role: Proton is a mobile-first company building an Internet that respects privacy and puts people not advertisers first. As an engineer on our Apple team you’ll build and ship features across Proton’s apps on iPhone iPad and macOS working closely with product and engineers across the company to define what “great” looks like on Apple platforms. Our codebase is primarily Swift with some Go we’re moving to a platform-independent Rust logical core that communicates with Swift via a generic interface so Rust experience is a strong plus. Quality is central to the role: you’ll contribute to maintain our testing stack including unit tests for business logic stubbed API tests for pseudo-integration snapshot tests for UI XCUITest for end-to-end user flows. You’ll join a team that pairs deep technical expertise with an obsession for simple usable interfaces shipping privacy-preserving products used by millions. What we are looking for:

• You have experience in iOS or macOS development in particular with Swift (7+ years)
• You have a passion for mentoring other engineers helping them grow
• You are passionate about user interaction usability providing an excellent user experience
• Demonstrated experience driving change within an organization leading complex technical projects
• Extensive experience building maintainable testable code bases including API design unit testing techniques
• Extensive experience with concurrent programming mobile memory management
• A strong grasp of scalable software architecture software engineering best practices
• An intuition for optimal user experience design
• Rust experience optional but a major plus

Even if you don’t meet all requirements listed above but feel you could still be a great fit please still apply. What We Offer

• Office First: Collaboration easier more effective in person offices located Geneva Zurich Prague Barcelona Paris London Vilnius Skopje Taipei Work from home up to 30% time.
• Technology: All devices software needed provided.
• Food: Lunch snacks provided daily offices.
• Transport: Support transport costs subsidizing public transport bike allowances parking spaces depending office location.
• Stock Options: Employees get stock options when joining.
• Flexible Working: Define your own working hours as long fits team meetings.
• Learning Development: Various learning opportunities including training programs conferences events.
• Employee Benefits: Comprehensive health insurance plans competitive retirement savings options generous vacation leave policies wellness programs.
• Work that Matters: Community-first organization funded by user subscriptions only over 100 million users trust Proton.

Our Commitment to Diversity Inclusion At Proton:

• Diversity drives innovation.
• Committed fostering inclusive environment where all individuals regardless race ethnicity gender identity expression age sexual orientation physical ability socio-economic background feel valued empowered.
• Strive equal opportunities.
• Promote open dialogue continuous learning.
• Ensure every voice heard respected.

If extra support reasonable adjustments needed during hiring process please inform your talent partner. Candidate Privacy Notice When applying or being considered roles at Proton Technologies AG:

• Your information stored Greenhouse per their Service Privacy Policy.
• Used evaluate suitability posted position.
• Retained also consideration future roles aligned your background skills.
• If no longer needed legitimate business purpose info deleted anonymized.
• For inquiries about data use access correction deletion contact privacy team careers@proton.ch.

Proton does not accept unsolicited resumes sources other than directly candidates No fees paid unsolicited offers even if candidate hired. Learn more about privacy policy at our privacy policy page.

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