Senior Front End Engineer (Docs)

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-source projects here!

As a Front-end Engineer on Proton's Docs and Sheets team, you will help build secure productivity tools, working across Proton Docs, Proton Sheets, the Docs homepage, and future products. We are seeking a senior engineer who is passionate about client-side architecture, system design, and usability, and who thrives in a highly collaborative environment. You'll work closely with Product, Design, API teams, and fellow engineers, driving data-informed decisions to deliver a seamless and secure user experience.

Our team builds Proton Docs, Proton Sheets, and the Docs homepage, helping users create, edit, organize, and collaborate on documents and spreadsheets while protecting their privacy. Current work spans editor capabilities, real-time collaboration, and the homepage experience that brings these products together. You'll build these experiences using React and TypeScript, with end-to-end encryption at their core.

• TypeScript, JavaScript, React, Tailwind CSS, Lexical, Yjs, Playwright, Jest
• Explore our open-source code: [Proton web clients](https://github.com/ProtonMail/WebClients).

End-to-end encryption brings unique engineering challenges to collaborative editing and document management. You'll help deliver responsive, intuitive experiences while keeping users' content private.

We will continue expanding Proton Docs and Proton Sheets, improving the Docs homepage, and building future productivity products. Our focus is on richer editing capabilities, smoother collaboration, and connected workflows for individuals and businesses, guided by security, privacy, and simplicity.

• →Build, ship, and maintain user experiences across Proton Docs, Proton Sheets, the Docs homepage, and future products, helping users work with documents and spreadsheets securely.
• →Transform product specifications into technical requirements and lead your team to their successful implementation.
• →Enhance our team's development lifecycle, tools, and code structure for an improved developer experience through technical leadership and architecture.
• →Write clear, concise, and testable code to maintain and elevate the quality of our codebase.
• →Scope, plan, and execute new features, technical initiatives, and greenfield projects (depending on seniority).
• →Foster a culture of learning, creativity, and accountability for the best possible work through mentorship and team development, role modeling quality assurance, and performance optimization.

• 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

• 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

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.

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. 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.

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 careers@proton.ch.

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.

To learn more about our privacy policy, please visit our privacy policy page.

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