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Senior Foundation Engineer (Drive)

Proton· CC - Engineering Drive
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Hybrid (Geneva; London)full-timePosted 7mo ago

About the role

Senior Drive Foundation Engineer responsible for designing, implementing, and maintaining foundational components powering Proton Drive, collaborating with backend, web, mobile, and desktop teams to ensure seamless integration and performance across clients.

Responsibilities

  • 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.

Qualifications

  • 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.
  • Proton is an office-first company. We expect you to spend most of your time in the office, and while we do offer some flexibility to work from home, we believe in-person collaboration helps us build the best products.

Skills

Required:RustTypeScriptWeb/Mobile/Desktop SDK development
Nice to have:C#

Benefits

  • 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.
  • 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, such as MIT, Harvard, Stanford, Caltech, Cambridge, and ETH.
  • 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.
  • 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.
Last updated Oct 15, 2026. Interested? Apply on the company site.

About Proton

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Proton was started in 2014 by scientists who met at CERN and shared a vision of an internet that defends freedom and puts people first.

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