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Senior .NET Developer (Desktop/SDK)

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

About the role

Senior developer responsible for designing, building, maintaining and evolving the sync SDK powering Proton Drive's desktop applications, with emphasis on internals shared across desktop experiences, including Gitlab configuration, deployments, monitoring and incident response.

Responsibilities

  • Be part of a small team working to bring a "privacy by default" solution to Drive clients on Windows, macOS and Linux.
  • Develop applications that handle end-to-end encryption and operating internals for desktop applications.
  • Invest in test automation to improve productivity and delivery cadence.
  • Divide problems into iterations of simpler, composable solutions and re-evaluate minimum scope to meet objectives on-time.
  • Insist on high standards for application monitoring and alerting to ensure a smooth customer experience.

Qualifications

  • Strong experience in .NET development
  • Strong experience with concurrent multi-threaded programming
  • Optional experience building and maintaining desktop applications
  • Working knowledge of file systems
  • Working knowledge of Git
  • Bachelor's or master’s degree in a relevant field of study
  • Experience with owning and maintaining large software components
  • Experience with gradual rollouts and metrics/monitoring/alerting frameworks

Skills

Required:.NET developmentConcurrent multi-threaded programmingFile systemsGit
Nice to have:Desktop application development

Benefits

  • Office First: offices in multiple cities with option to work from home up to 30% of the time
  • Technology: devices and software provided
  • Food: lunch and snacks provided at offices
  • Transport: support for transport costs
  • Stock Options: stock options for joining Proton
  • Flexible Working: flexible hours
  • Learning and Development: training programs and conferences
  • Employee Benefits: comprehensive health insurance, retirement options, vacation policies, wellness programs
  • Work that Matters: impact and community focus
Last updated Aug 6, 2026. Interested? Apply on the company site.

About Proton

Privacy by default

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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