Senior Front End Engineer (Inbox Web)

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 today supports 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. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. Proton has become profitable and reached scale without relying upon VC funding, largely due to superior talent that allows us to do things faster, more creatively, and more efficiently.
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 social media pages to learn more about us: Twitter, Reddit, Instagram.
The Team
As a Front-end Engineer on the Inbox team, you will play a crucial role in developing Proton\’s most vital services, including Mail and Calendar. We expect you to be customer-centric, continuously learning, passionate about technology and usability. You are an adept at turning technical complexities into seamless user experiences. Effective teamwork, collaboration with Product, Design, APIs, and your team, and data-driven decision-making are essential aspects of this role.
Current Projects:

• Developing innovative productivity tools that seamlessly integrate with our privacy-centric ecosystem.
• Advancing the frontiers of cryptography to ensure user data remains secure even in the face of emerging technologies such as quantum proof encryption.
• Expanding Proton\’s reach into the B2B segment, bringing privacy and security to businesses worldwide.
• Pushing the boundaries of innovation with projects like Scribe, the world\’s first private AI in a consumer product.

Impact Opportunities:

• Scale Mail & Calendar B2B product development: Shape the future of products used by millions of people around the world.

Tech Stack and Tools:

• Javascript, Typescript, React, ES6
• Every Proton clients codebase are open source,
• Encryption brings unique challenges to front-end development. A trivial search functionality becomes much more interesting to implement when the email body is fully encrypted.

What You Will Do

• Developing, deploying and supporting high-quality user experiences within our Product portfolio including feature development and implementation.
• Transforming product specifications into technical requirements and lead your team to their successful implementation.
• Enhancing Proton\’s software development lifecycle, tools, and code structure for an improved developer experience through technical leadership and architecture.
• Writing clear, concise and testable code to maintain and elevate the quality of our codebase.
• Managing the scoping, planning and execution of new features, technical initiatives and greenfield projects (depending on seniority).
• Fostering a culture of learning, creativity, and accountability for the best possible work through mentorship and team development, role modelling quality assurance and performance optimisation

Job Requirements
While we prefer candidates who cover the entire skillset, don\’t hesitate to apply if you\’re not an exact match, as we\’re willing to help you grow in certain areas.

• Extensive experience of professional software development using JavaScript ES6+ or TypeScript.
• Experience with React or 2+ similar frameworks, developing performant and reusable components.
• Familiarity with best practices for ensuring code quality, including CI/CD.
• Ability to make architectural decisions and contribute to strategic planning and product direction
• Experience working in a distributed team.

Nice to have:

• Experience in B2B SaaS, preferably in online privacy and/or productivity contexts.

Even if you don’t meet all the requirements listed above, but feel you could still be a great fit, please still apply.
What We Offer

• Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.
• Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food: Lunch and snacks are provided by Proton every day at our offices.
• Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
• Stock Options: At Proton, we are all owners of the company and you get stock options when you join us.
• Flexible Working: You can define your own working hours as long as it works with team meetings.
• Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here.

Check our social media to learn more about Proton:
LinkedIn , Reddit , X, YouTube
Our Commitment to Diversity and Inclusion
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.
Candidate Privacy Notice
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
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 .

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Software Development

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