Software Engineer (Linux)

<p class="Lexical__paragraph"><strong><strong class="Lexical__textBold">Join Proton and build a better internet where privacy is the default</strong></strong></p> <p class="Lexical__paragraph">Proton was founded in 2014 by scientists from CERN on a simple truth: <strong><strong class="Lexical__textBold">privacy is a fundamental human right</strong></strong>. 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!</p> <p class="Lexical__paragraph">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 <a class="Lexical__link" href="https://proton.me/community/open-source">here</a>!</p> <p class="Lexical__paragraph"><strong>The Proton Drive Desktop Team</strong></p> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">Proton Drive is our secure, private cloud storage and collaborative editing suite, with clients on Windows, Mac, iOS, Android, and Web. One platform is missing: Linux. You will build it from scratch. This is a greenfield project with high visibility inside Proton and across the open-source community — our entire client codebase is published under an open-source license, and this will be the first public example of how to build a native application on top of the Proton Drive SDK. You will work closely with our Windows and Mac engineers to ensure feature parity, and you will contribute to our platform-agnostic SDK and CLI tooling as the Linux surface area demands it. If building something that the Linux community has been waiting for, and doing it in the open, is the kind of work that gets you out of bed — this role is for you.</p> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]"><strong>Tech Stack and Tools</strong></p> <ul class="[li_&]:mb-0 [li_&]:mt-1 [li_&]:gap-1 [&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3"> <li class="whitespace-normal break-words pl-2">Linux desktop application development (GTK+ or Qt)</li&gt