R+D Engineer at Proton.ai

<p data-renderer-start-pos="5" data-local-id="fd2168cf107d"><strong data-renderer-mark="true">About Proton </strong></p> <p data-renderer-start-pos="20" data-local-id="384391c2485b"><strong data-renderer-mark="true">Join Proton and build a better internet where privacy is the default</strong></p> <p data-renderer-start-pos="90" data-local-id="70873c53c148">Proton was founded in 2014 by scientists from CERN on a simple truth: <strong data-renderer-mark="true">privacy is a fundamental human right</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 data-renderer-start-pos="520" data-local-id="bb6a25ba35fe">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="_ymio1r31 _ypr0glyw _zcxs1o36 _mizu1v1w _1ah3dkaa _ra3xnqa1 _128mdkaa _1cvmnqa1 _4davt94y _4bfu1r31 _1hms8stv _ajmmnqa1 _vchhusvi _kqswh2mm _ect4ttxp _syaz13af _1a3b1r31 _4fpr8stv _5goinqa1 _f8pj13af _9oik1r31 _1bnxglyw _jf4cnqa1 _30l313af _1nrm1r31 _c2waglyw _1iohnqa1 _9h8h12zz _10531ra0 _1ien1ra0 _n0fx1ra0 _1vhv17z1" href="https://proton.me/community/open-source" data-renderer-mark="true">here</a>!</p> <p><strong>The team:</strong></p> <p data-renderer-start-pos="22" data-local-id="9808684d7a89"><strong data-renderer-mark="true">ProtonVPN&nbsp;</strong>runs on a distributed architecture of Linux servers and a set of apps available on each major platform (Windows, Android, iOS, macOS, and Linux) that interact with our infrastructure.</p> <p data-renderer-start-pos="217" data-local-id="4eabc1adb62a">As a member of the ProtonVPN Research and Development team, you will work on maintaining the security of ProtonVPN’s infrastructure, improving its overall performance, designing and implementing new features. On any given day, you might code in C or Rust, script in Python or Lua, create patches for the Linux kernel, or debug system-level issues on different operating systems. You will work in close collaboration with the entire ProtonVPN development team on any outstanding projects. Y<span class="fabric-text-color-mark" data-renderer-mark="true" data-text-custom-color="#172b4d">ou will face unique and varied challenges that will require continuous&nbsp; learning.</span></p> <p>&nbsp;</p> <p><strong>What you will do:</strong></p> <ul class="ak-ul" data-local-id="c2346b93e803" data-indent-level="1"> <li> <p data-renderer-start-pos="811" data-local-id="9e249bb25868">Being an active member of the ProtonVPN R&amp;D team</p> </li> <li> <p data-renderer-start-pos="863" data-local-id="7894ee6324ae">Collaborating with app developers to help solve the various complex challenges related to (but not limited to) the networking stack of Linux, macOS, iOS, Android, and Windows systems</p> </li> <li> <p data-renderer-start-pos="1049" data-local-id="a92a7d1505eb">Helping develop innovative solutions to improve the <mark id="832c1208-e9cf-4730-8556-f35b42b4fc30" class="css-100s7ye" data-renderer-mark="true" data-mark-type="annotation" data-mark-annotation-type="inlineComment" data-id="832c1208-e9cf-4730-8556-f35b42b4fc30" data-mark-annotation-state="resolved" data-has-focus="false" data-is-hovered="false">connectivity, stability, performance, scalability, security,</mark> and resilience of ProtonVPN’s&nbsp;infrastructure&nbsp;and client software, and extend their functionality</p> </li> <li> <p data-renderer-start-pos="1259" data-local-id="3d914ab26158">Contributing to existing open-source projects or creating new ones</p> </li> </ul> <p>&nbsp;</p> <p><strong>What we are looking for:</strong></p> <ul class="ak-ul" data-local-id="f9450aee8961" data-indent-level="1"> <li> <p data-renderer-start-pos="1351" data-local-id="ac06edb9604b">Expert-level knowledge of operating system internals</p> </li> <li> <p data-renderer-start-pos="1407" data-local-id="5680f7fcee36">Expertise with network protocols and implementation</p> </li> <li> <p data-renderer-start-pos="1462" data-local-id="5cee9dc20738">A documented track record of contributions to system-level projects and applications</p> </li> <li> <p data-renderer-start-pos="1550" data-local-id="23ab0d102eb9">Experience with software development</p> </li> <li> <p data-renderer-start-pos="1590" data-local-id="e51b15b7c395">Understanding of the principles of quality assurance</p> </li> </ul> <p>Bonus points for:&nbsp;</p> <ul class="ak-ul" data-local-id="da43315dec21" data-indent-level="1"> <li> <p data-renderer-start-pos="1705" data-local-id="593d3b59f643">Expertise in Windows, macOS, or Linux system development</p> </li> <li> <p data-renderer-start-pos="1765" data-local-id="42f520f85058">Extensive experience working with Linux kernel, Windows drivers, or macOS system extensions development</p> </li> <li> <p data-renderer-start-pos="1872" data-local-id="78775262e104">Strong understanding of system programming languages (C/C++, Rust, Go, Python, etc.)</p> </li> <li> <p data-renderer-start-pos="1960" data-local-id="2418f457a7e0">Experience with debugging code and code profiling</p> </li> <li> <p data-renderer-start-pos="2013" data-local-id="3b53ba566569">Good understanding of TCP/IP protocol and settings (e.g., congestion algorithms)</p> </li> <li> <p data-renderer-start-pos="2097" data-local-id="980ab4180674">Strong understanding of VPN protocols (particularly OpenVPN and WireGuard)</p> </li> <li> <p data-renderer-start-pos="2175" data-local-id="f13400a80f58">Experience with cryptography concepts (e.g., TLS certificates and public key infrastructure)</p> </li> </ul> <p>&nbsp;</p> <p><strong>What We Offer:</strong></p> <ul class="ak-ul" data-local-id="e25015bb-9425-4411-8de9-ec5bcf9d0dc2" data-indent-level="1"> <li> <p data-renderer-start-pos="987" data-local-id="f221d9a09974"><strong data-renderer-mark="true">Work that Matters:</strong> 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 <a class="_ymio1r31 _ypr0glyw _zcxs1o36 _mizu1v1w _1ah3dkaa _ra3xnqa1 _128mdkaa _1cvmnqa1 _4davt94y _4bfu1r31 _1hms8stv _ajmmnqa1 _vchhusvi _kqswh2mm _ect4ttxp _syaz13af _1a3b1r31 _4fpr8stv _5goinqa1 _f8pj13af _9oik1r31 _1bnxglyw _jf4cnqa1 _30l313af _1nrm1r31 _c2waglyw _1iohnqa1 _9h8h12zz _10531ra0 _1ien1ra0 _n0fx1ra0 _1vhv17z1" href="https://proton.me/about/impact" data-renderer-mark="true">here</a>)</p> </li> <li> <p data-renderer-start-pos="1259" data-local-id="0169d31d7b24"><strong data-renderer-mark="true">Stock Options:</strong> 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.</p> </li> <li> <p data-renderer-start-pos="1432" data-local-id="357c38fec696"><strong data-renderer-mark="true">Technology:</strong> you'll get the right hardware and the right software you need to do your best work.</p> </li> <li> <p data-renderer-start-pos="1531" data-local-id="8498f6ce37dd"><strong data-renderer-mark="true">Learning &amp; Development:</strong> 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.</p> </li> <li> <p data-renderer-start-pos="1762" data-local-id="7fa21821ad7f"><strong data-renderer-mark="true">Employee Benefits:</strong> 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</p> </li> <li> <p data-renderer-start-pos="1968" data-local-id="e87c3e2586e1"><strong data-renderer-mark="true">In-Person Collaboration:</strong> 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</p> </li> <li> <p data-renderer-start-pos="2276" data-local-id="f36861ba7cfd"><strong data-renderer-mark="true">Food:</strong> 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.</p> </li> <li> <p data-renderer-start-pos="2395" data-local-id="2d680de08c5b"><strong data-renderer-mark="true">Transport: </strong>getting to the office shouldn't cost you. We cover public transport, bike allowances, or parking, whichever works for you.</p> </li> <li> <p data-renderer-start-pos="2532" data-local-id="fdc6d740062d"><strong data-renderer-mark="true">Flexible Working:</strong> you own your schedule. Set hours that work for you and your team — because outcomes matter more than when the clock says you started.</p> </li> </ul> <p><strong>Our Commitment to Diversity and Inclusion</strong></p> <p>At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.</p> <p>If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.</p> <p><strong>Candidate Privacy Notice</strong></p> <p>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&nbsp;<a class="external-link" href="https://www.greenhouse.com/privacy-policy">Service Privacy Policy.</a>&nbsp;This information is used to evaluate your suitability for the posted position. 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.</p> <p>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].</p> <p><em>Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.</em></p> <p><em>To learn more about our privacy policy, please visit&nbsp;</em><a class="external-link" href="https://boards.eu.greenhouse.io/protongdpr"><em>our privacy policy page</em></a><em>.</em></p> <p><em><span style="font-weight: 400;"><span class="TextRun SCXP113655307 BCX0" lang="EN-US" data-scheme-color="@6D4AFF,," data-usefontface="true" data-contrast="none"><span class="NormalTextRun SCXP113655307 BCX0">#LI-Onsite</span></span></span></em></p>