Frontend Engineer (Inbox Web)

Key Responsibilities

• Take end‑to‑end ownership of mobile application development projects, including scoping and prioritization.
• Foster a culture of innovation by exploring new technologies, methodologies, and web development approaches.
• Design for scalability, considering factors such as data caching, network bandwidth, and server load.
• Implement solutions to monitor and alert the team regarding the state of Inbox web clients.
• Prioritize customer satisfaction by maintaining a customer‑centric mindset throughout the development process, continuously seeking feedback and iterating to improve the user experience.

Tech Stack and Tools

Javascript, TypeScript, React, Symfony, Rust.

• Every Proton client’s codebase is open source. Check it out here.
• Encryption brings unique challenges to front‑end development. For example, a trivial search functionality becomes more interesting when the email body is fully encrypted.

What You Will Do

• Develop new features: writing, deploying, and supporting high‑quality user experiences, including feature development and implementation.
• Drive user adoption and retention through onboarding and a delightful experience.
• Collaborate with backend, product owners, designers, QA, and other engineers to take initiatives from ideation to completion.
• Conduct code reviews and provide constructive feedback to ensure code quality, maintainability, and performance optimization.
• Develop and implement comprehensive testing strategies across all test layers to ensure reliability and future ease of development.

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 in professional software development using JavaScript or TypeScript.
• Experience with React or two or more similar frameworks, developing performant and reusable components.
• Experience contributing to an API codebase, bonus points if in PHP.
• Experience writing tests at scale.
• Familiarity with best practices for ensuring code quality, including CI/CD.

Nice to Have

• Experience with monitoring and observability tools.
• 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.

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 work from home up to 30% of the time while enjoying good company during our three core days in the office.
• Technology: We provide all the devices and software you need to excel in your role.
• Food: Lunch and snacks are provided at our offices.
• Transport: We support employees with transport costs through subsidized public transport, bike allowances, or parking spaces based on office location.
• Stock Options: At Proton, we all own the company and you receive stock options when you join us.
• Flexible Working: You can define your own working hours as long as they accommodate team meetings.
• Learning and Development: We commit to your professional growth through training programs, conferences, and continuous learning.
• Employee Benefits: Comprehensive health insurance plans, retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is community‑first, with revenue solely from user subscriptions. Over 100 million people trust us, and we put users and community first in everything we do.

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, your information is stored in Greenhouse in accordance with their Service Privacy Policy. It is used to evaluate suitability for the posted position and may be retained 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. For inquiries about how we use or manage your information, contact our privacy team at Proton does not accept unsolicited resumes from any sources other than directly from candidates and will not pay a fee for any placement resulting from an unsolicited offer.