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# Windows Engineer

- **Company:** Proton Mail
- **Location:** Barcelona, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Microsoft Windows, Application Lifecycle Management, Automation of Tests, Computer Programming, Desktop Window Management, File Systems, Fault Tolerance, HP Systems Insight Manager, Multithreading, Backend, Gitlab, Git
- **Published:** July 13, 2026
- **Apply:** https://www.jobleads.com/es/job/e053058a531a13bb880763a2964fb1e6b

## About the Role

* Strong experience in .NET development
 * Strong experience building and maintaining Desktop Windows applications
 * Strong experience with concurrent multi-threaded programming
 * 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

## Description

You will be responsible for designing, building, maintaining and evolving Proton applications on Windows. This includes not only building the application internals (managing and syncing local and remote state, performing cryptographic operations, etc.) but also helping us to build a resilient, scalable application (graceful degradation; log and metrics streams free of personally identifiable information). You will be involved in the entire application lifecycle, including Gitlab configuration, deployments, monitoring and alerting, and operational incident response. While this position is not a "full-stack" position, you will be expected to collaborate with backend engineers to drive any necessary changes and/or new features needed for the Windows experience., * Develop an application that delights a wide range of users, from layperson to technical, and gives confidence that their online privacy is in good hands - while getting the complexity of end-to-end encryption out of the way.

 * Invest in testing and automation to improve the team's productivity and software delivery cadence.
 * Think critically on how to divide problems into iterations of simpler, composable solutions. Re-evaluate the minimum scope as necessary to meet objectives on-time.
 * Insist on high standards for application monitoring and alerting, in order to ensure a smooth customer experience at all times.


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