Senior Foundation Engineer (Drive)

Proton; Greater London; On-site; GBP 100,000 - 140,000; Full time

Benefits offered by this job

Health coverage

Stock options

Flexible working

Professional development

Lunch and snacks

Job summary

Proton is seeking a Senior Drive Foundation Engineer to design, implement and maintain foundational libraries powering Proton Drive applications. You will collaborate with Drive teams across backend, web, mobile and desktop to ensure seamless integration and high performance.

You will architect core libraries in Rust, C#/TypeScript, and work across platforms, with emphasis on code quality, testing, and thorough documentation to help other developers reuse the components.

Qualifications

• 5+ years of professional software development experience with Rust.
• Strong Rust language features, concurrency, and ownership.
• Experience building libraries for client applications (web/mobile/desktop).
• Excellent collaboration and communication skills.
• Problem-solving and debugging abilities.

Responsibilities

• Architect and develop core libraries for Proton Drive.
• Ensure cross-platform compatibility across clients.
• Conduct code reviews and optimize performance.
• Collaborate with backend, frontend, mobile, and desktop teams.
• Develop tests and testing strategies (unit/integration).
• Create and maintain thorough documentation.

Skills

Rust

Cross-platform

Code review

Collaboration

Testing

Documentation

Job description

Job Summary

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. 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.

What you will do

• Architect and develop core libraries: Lead the design and development of core C#/TypeScript/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.
• Web, mobile, and/or desktop development: Experience in developing libraries for client applications.
• Proven ability to work collaboratively in a team environment and excellent communication skills.
• Strong problem-solving skills and the ability to troubleshoot issues efficiently.

What we offer

• Work that Matters: millions of people trust Proton with their privacy. We answer only to our users - not advertisers, not investors with conflicting agendas, not governments. The work you do here is real, and the impact is measurable.
• 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.
• 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. Proton is one of the fastest ways to accelerate your career because you'll be thrown into real challenges, with real ownership, from day one.
• Employee Benefits: your wellbeing isn't an afterthought. We offer strong health coverage, solid retirement options, generous leave, and wellness support so you can bring your best self to work every day.
• 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. When Proton wins, you win.
• In-Person Collaboration: Amazing things happen when passionate, smart, and purposeful people get together in the same room. 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. Set hours that work for you and your team - because outcomes matter more than when the clock says you started.

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.

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