Senior Frontend Engineer (VPN)

Barcelona; Geneva; Vilnius; 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 at heart. We 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-sourceprojects here! The VPN team is focused on building the best and most trustworthy VPN in the world. 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. What you will do:

• Work closely with a group of Web, Backend 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 front-end capabilities and their proper use so that all Proton VPN clients can implement correctly-functioning solutions
• Debug and repair vital systems such as the systems responsible for cleaning up file revisions and returning quota to users

Job Requirements:

• Deep understanding of JavaScript methodologies and design patterns
• Proficiency with TypeScript or any typed language
• Experience with React or 2+ similar frameworks, developing performant and reusable components
• Strong understanding of software engineering best practices, such as SOLID, Design Patterns, CI/CD
• A product mindset with a focus on offering the best user experiences
• Experience working in a distributed team

Bonus points for:

• Awareness of common security issues in client-side development, such as those in the OWASP top ten, and how to mitigate them
• Familiarity with UX, accessibility, internationalization, and localization concerns and solutions
• Experience with Grafana or other monitoring platforms
• Experience with breaking down product requirements into architecture design and implementation
• Experience with NodeJS
• High-level understanding of cryptography concepts such as key exchange and the difference between symmetric and asymmetric encryption

What We Offer:

• Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich,... Barcelona,... Vilnius,... You can also enjoy working from home up to 30% of the time...
• Technology: We provide all devices/software needed...
• Food: Lunch/snacks provided daily at offices.
• Transport: Subsidized transport costs based on office location.
• Stock Options: All employees get stock options when joining.
• Flexible Working: Define your own working hours compatible with meetings.
• Learning & Development: Training programs/conferences/continual learning offered.
• Employee Benefits: Health insurance plans/retirement savings/vacation/wellness programs.
• Work that Matters: Community-first organization funded by user subscriptions; impact info linked here.
• Vilnius: Salary can range from €50k - €88k (varies by skills/experience)

Our Commitment to Diversity & Inclusion At Proton,... inclusive environment,... equal opportunities,... continuous learning,... every voice heard/respected. If you need extra support during hiring process,... contact talent partner. Candidate Privacy Notice... candidates info stored per Greenhouse Service Privacy Policy... candidates may contact privacy team at careers@proton.ch... Proton does not accept unsolicited resumes except directly from candidates... does not pay fees for unsolicited offers even if candidate hired...

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