Senior Foundation Engineer (Drive)

Das ist der Job

Drive Foundation Overview Drive Foundation is the backbone of Proton Drive.

Darum lohnt es sich

Whether it’s aligning multiple clients, maintaining documentation or the RFC process, or building robust SDKs, our team lays the groundwork that makes the entire Drive experience work seamlessly.

Drive is rapidly expanding; as it evolves into a true platform, more teams will emerge, offering opportunities to grow as an IC, tech lead, or engineering manager.

You will work collaboratively with Drive teams, including backend, web, mobile, or desktop developers, to ensure seamless integration and optimal performance across various client applications. Proven ability to work collaboratively in a team environment and excellent communication skills.

Work with smart and dedicated people: Our team is diverse, collaborative, and tight‑knit with people coming from all walks of life, including many of the world’s top academic institutions and organizations. Employee Benefits: your wellbeing isn’t an afterthought.

Set hours that work for you and your team – because outcomes matter more than when the clock says you started. 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.

We ensure that cross‑client initiatives are executed consistently and efficiently. Current Projects Developing SDK that encapsulate the core functionality of Proton Drive. The SDK comes with two core implementations, one in C# for desktop and mobile clients and one in TypeScript for the web client, and higher‑level modules in Rust.

Our SDK primarily serves internal clients today, but our long‑term vision includes integrating them across the Proton ecosystem—and even enabling third‑party applications to interface with Drive. Tech Stack and Tools Languages: C#, TypeScript, Rust, plus bindings for Swift and Kotlin.

Tools: Grafana, Prometheus for instrumentation; Sentry for issue telemetry; GitLab CI for running tests including e2e tests written with Playwright; general GitLab use for code base workflow. Future Plans Revamp the cryptographic model to boost performance and efficiency across all clients.

Complete the first generation of SDK to cover all core Drive features and new crypto model. Develop a second generation in Rust with lessons learned, including full support for Photos, Public Sharing, and Docs.

Impact Opportunities Foundation work touches every aspect of Drive; the SDK and infrastructure you build will be used by every Drive client. You’ll have the chance to shape the future of Drive and your own career path in a variety of domains and technologies.

Senior Drive Foundation Engineer As a Senior Drive Foundation Engineer, you will play a crucial role in designing, implementing, and maintaining the foundational components that power Proton Drive applications.

What you will do Architect and develop core libraries: Lead the design and development of core C#, TypeScript, and Rust libraries that serve as the backbone for Proton Drive’s applications. Cross‑platform compatibility: Ensure compatibility and optimal performance across various platforms.

Code review and optimization: Conduct code reviews and provide constructive feedback to ensure code quality, maintainability, and performance optimization. Collaboration: Work closely with backend, frontend, mobile, and desktop developers to integrate core libraries seamlessly into Proton Drive’s applications.

Testing: Develop and implement comprehensive testing strategies, including unit tests and integration tests, to ensure the reliability of core libraries. Documentation: Create and maintain thorough documentation for core libraries to assist other developers in understanding and utilizing the components.

Job requirements 5+ years of professional software development experience, with a focus on the Rust programming language. Strong expertise in Rust language features, concurrency, and ownership models. Experience in developing libraries for client applications in web, mobile, and/or desktop contexts.

Strong problem‑solving skills and the ability to troubleshoot issues efficiently. 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 Work that Matters: millions of people trust Proton with their privacy.

We answer only to our users – no advertisers, investors, or governments with conflicting agendas. The work you do here is real, and the impact is measurable. Technology: you’ll get the right hardware and the right software you need to do your best work. Learning & Development: we invest in your growth because sharp people make us better.

We offer strong health coverage, solid retirement options, generous leave, and wellness support. Stock Options: 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.

In‑Person Collaboration: 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. Food: 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.

Transport: getting to the office shouldn’t cost you. We cover public transport, bike allowances, or parking, whichever works for you. Flexible Working: you own your schedule. 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.

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. #J-18808-Ljbffr