At a Glance
- Tasks: Join a team building privacy-first products like Proton Mail and Proton Drive.
- Company: Proton, a leader in privacy-focused technology with a mission that matters.
- Benefits: Stock options, strong health coverage, flexible working, and daily meals provided.
- Other info: Collaborative environment with opportunities for career growth and mentorship.
- Why this job: Make a real impact on millions while working on cutting-edge tech.
- Qualifications: Extensive iOS development experience and a passion for user experience.
The predicted salary is between 60000 - 80000 £ per year.
Based in our London office, you’ll join one of several high‑impact product teams across Proton Mail, Proton Drive, 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.
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.
Senior iOS Software Engineer - London employer: Proton AG
Proton is an exceptional employer, offering a unique opportunity to work on privacy-first products that have a meaningful impact on millions of users worldwide. With a strong focus on employee growth, we provide extensive learning and development opportunities, competitive benefits including stock options, and a collaborative work culture in our vibrant London office. Our commitment to your wellbeing and flexible working arrangements ensures you can thrive both personally and professionally while contributing to groundbreaking technology.
StudySmarter Expert Advice🤫
We think this is how you could land Senior iOS Software Engineer - London
✨Network Like a Pro
Get out there and connect with folks in the industry! Attend meetups, tech talks, or even casual coffee chats. We all know that sometimes it’s not just what you know, but who you know that can help you land that dream job.
✨Show Off Your Skills
Don’t just tell us about your experience; show us! Build a portfolio of your projects or contribute to open-source. This way, we can see your coding chops in action, especially when it comes to iOS applications.
✨Ace the Interview
Prepare for those technical interviews by brushing up on your algorithms and system design skills. We want to see how you think and solve problems, so practice coding challenges and be ready to discuss your thought process.
✨Apply Through Our Website
Make sure to apply directly through our website! It’s the best way to get noticed by our hiring team. Plus, you’ll find all the latest openings and updates about what we’re building at Proton.
We think you need these skills to ace Senior iOS Software Engineer - London
Some tips for your application 🫡
Show Off Your Experience:Make sure to highlight your extensive experience in building and shipping high-quality iOS applications. We want to see how you've tackled challenges and delivered exceptional user experiences, so don’t hold back!
Quality Matters:We care deeply about product quality and usability. In your application, share examples of how you've ensured maintainable, scalable, and testable mobile architectures in your past projects. This will show us you’re on the same page as us!
Collaboration is Key:Since you'll be working closely with product, design, and other engineers, mention any experiences where you've successfully collaborated across teams. We love seeing how you navigate large codebases and contribute to discussions.
Apply Through Our Website:Don’t forget to apply through our website! It’s the best way for us to keep track of your application and ensure it gets the attention it deserves. We can’t wait to see what you bring to the table!
How to prepare for a job interview at Proton AG
✨Know Your Stuff
Make sure you brush up on your iOS development skills and be ready to discuss your past projects. Be prepared to dive deep into the technical aspects of your work, especially around performance, concurrency, and memory management.
✨Show Your Passion for Privacy
Since this role is all about building privacy-first products, demonstrate your understanding of privacy, security, and encryption. Share any relevant experiences or projects that highlight your commitment to user privacy.
✨Collaboration is Key
This position involves working closely with product, design, and other engineers. Be ready to talk about how you've successfully collaborated in the past and how you approach mentoring others to raise the technical bar within a team.
✨Ask Thoughtful Questions
Prepare some insightful questions about the company’s products and future direction. This shows your genuine interest in the role and helps you gauge if Proton is the right fit for you.
