Frontend Engineer; B2B

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  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 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 GPL
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• 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 with React, developing performant and reusable components
• Proficiency with Type Script or any typed language
• Experience leading large and complex projects as a front engineer
• Bonus for B2B product experience and UX design experience

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. read more about our impact here
• 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…