Frontend Engineer (Real-Time Streaming Platform)

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!

• Our frontend is built with React and Rust
• 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
• Extensive experience with React, developing performant and reusable components
• Proficiency with TypeScript or any typed language
• Experience leading large and complex projects as a front engineer
• Bonus for experience using agentic AI
• Bonus for experience in audio/video app, WebRTC and Messaging Layer Security

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 )