Sep 14, 2026 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. We are profitable, independent (no VC control), and selectively hire from the top ~1% of applicants.

If you want to do meaningful work with exceptionally high-caliber people, this is it. Check our open-source projects here ! 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.

Work closely with a group of Back-End Engineers and Architects to build resilient, massively-scalable solutions for millions of people to rely on Collaborate with teams of client application developers and product management to ensure that the back-end meets critical business and reliability requirements Document back-end capabilities and their proper use so that all Proton VPN clients can implement correctly-functioning solutions Experience with PHP-based entry-points to a back-end software stack Solid understanding of SQL (MySql preferred)



and data modelling Solid understanding of Redis or other caching technologies Solid understanding of including both developing and consuming Web-based APIs Experience with Docker or similar containerization technologies Experience with metrics graphing/analysis toolkits such as Grafana and OpenTelemetry Experience with Python and/or Rust Technology: you'll get the right hardware and the right software you need to do your best work.

We offer strong health coverage, solid retirement options, generous leave, and wellness support so you can bring your best self to work every day Transport: getting to the office shouldn't cost you.

Versátil Working: you own your schedule. If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know. When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy.

We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills. If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at [email protected] better internet starts with privacy and freedom Technology, Information and Internet Technology, Information and Media

📌 Back End Developer Engineer (Cataluña)
🏢 Proton
📍 Cataluña