Senior Software Engineer, Windows/Desktop Applications

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer, Windows/Desktop Applications based in Netherlands. This is a high-impact engineering role focused on building and evolving native Windows desktop applications used by millions of users worldwide.

• Lead the design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI, C#, XAML, and optionally C++.
• Define and enforce engineering best practices for performance, maintainability, memory management, and cross-version Windows compatibility.
• Drive accessibility initiatives, ensuring compliance with Windows accessibility APIs (e.g., UI Automation) and delivering inclusive user experiences.
• Collaborate with Product, Design, UX, QA, and other engineering teams to define feature scope and UI/UX architecture.
• Own the full software development lifecycle, from design and implementation to testing, release, and ongoing maintenance.
• Diagnose and resolve complex technical issues including performance bottlenecks, memory leaks, rendering issues, and compatibility challenges.
• Contribute to architectural decisions and improve system design for scalability and long-term maintainability.
• Mentor engineers, participate in code reviews, and help raise the overall engineering bar.

• 3+ years of experience in Windows desktop application development using Windows App SDK, WinUI (or similar frameworks), C#, XAML, and optionally C++.
• Strong understanding of Windows application architecture, including .NET and native interop (Win32/WinRT/COM).
• Proven experience shipping production-grade desktop applications with a focus on performance, reliability, and scalability.
• Hands-on experience with accessibility APIs (e.g., Microsoft UI Automation) and building inclusive software.
• Strong computer science fundamentals including OOP, design patterns, data structures, algorithms, multithreading, and asynchronous programming.
• Experience in technical leadership, code reviews, and mentoring engineers.
• Excellent communication skills and ability to collaborate across cross-functional teams.
• User-centric mindset with attention to detail in building intuitive, polished desktop experiences.

• Competitive compensation package aligned with experience and impact.
• Opportunity to work on a product used by millions globally with strong real-world impact.
• Fully remote, distributed work environment with high flexibility and autonomy.
• High degree of ownership in architectural decisions and product direction.
• Leadership opportunities including mentoring and progression into senior technical roles.
• Mission-driven culture focused on accessibility, inclusivity, and user impact.
• Collaborative engineering environment with strong emphasis on learning and technical excellence.