Backend Engineer; B2B

Overview

Join Proton and build a better internet where privacy is the default

Proton was founded in 2014 by scientists from CERN on a simple truth:
privacy is a fundamental human right
. Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar—tools used by millions globally to protect their freedom, fight censorship, and keep their data safe. In some situations, Proton has literally helped save lives. We are profitable, independent (no VC control), and selectively hire from the top ~1% of applicants.

Our 500+ team members across 50+ countries come from leading organizations and elite academic backgrounds. We move fast, keep hierarchy light, and prioritize impact over optics. If you want to do meaningful work with exceptionally high-caliber people, this is it. Join us and do work you can truly be proud of. Check our open-source projects here.

The central B2B team focuses on the priority needs of the 50,000+ businesses, non-profits, and government organizations that use Proton for work: (Use the "Apply for this Job" box below). We expect significant growth in B2B users in the coming years across all Proton products. We have built solutions that span multiple products as well as product-specific features. We work closely with product teams and other central teams such as Account and Payments.

We are part of a group that is split between Europe and Taiwan and operates 24/7 to ensure reliable service for our users.

• Our frontend is based on React
• Our backend API is based on PHP/Symfony
• All our client-code is open-source and GPL3
• We are migrating our infrastructure to Kubernetes
• Everything runs on premise in Proton's data-centers
• To organize our work we use classic tools such as Jira and Confluence

We believe in small empowered teams that focus on delivering large impact. This requires strong engineers with product engineering mindset who can collaborate well, take ownership, and do whatever is needed to achieve our ambitious goals.

• Extensive experience as a backend developer, ideally in PHP
• Database and data modeling knowledge (we use MySQL)
• Experience leading large and complex projects as a backend engineer
• Bonus for B2B product experience and infrastructure knowledge

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

• 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.
• 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
• 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.
• 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.

Our Commitment to Diversity and…