S
Speechify
Senior Software Engineer (Windows/Desktop Applications)
Skills
C#Testing & QAData Analysis
2 months ago
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Important information
Contract type:
Permanent
Location:
London, UK
Work mode:
Onsite
Published on:
25 August 2026
What they need
- Lead the design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI (or related UI frameworks), C#, XAML, and — when needed — C++
- Define and enforce best-practices for Windows desktop development across the codebase: code architecture, performance, memory usage, responsive UI, cross-version compatibility (Windows 10/11+), and maintainability
- Drive accessibility efforts: integrate and validate support for accessibility APIs (e.g. Microsoft UI Automation or other relevant Windows accessibility frameworks), ensure UI controls, focus management, keyboard navigation, screen-reader support, and usability for users with disabilities
- Collaborate closely with product designers, UX researchers, QA, and other stakeholders to shape feature planning, UI/UX architecture, and long-term roadmap for the Windows platform
- Take ownership of full lifecycle of features: conception → design → implementation → testing → release → maintenance. Ensure quality, reliability, and consistency across releases
- Identify, diagnose, and resolve complex bugs, performance bottlenecks, memory leaks, rendering issues, or compatibility problems — and propose robust architectural or design solutions- Proven track record of designing, building, and shipping production-quality desktop applications, with an emphasis on reliability, performance, scalability, and maintainability
- Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture-level decisions
- Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code
- A user-centric mindset: focus on building polished, intuitive, and accessible experiences for end users
- Strong communication skills; ability to articulate tradeoffs, collaborate with cross-functional teams, and drive consensus
- Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading or asynchronous programming (where relevant)
- Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar), and a dedication to building accessible and inclusive software
- 3+ in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML — and ideally additional experience with native Windows code (C++, Win32/WinRT/COM)
- Demonstrated ability to take ownership of feature areas or modules and drive them long-term, including maintenance, refactoring, and technical debt management
- Previous experience in shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications
- Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications
- Experience with localization/globalization, right-to-left UI support, internationalization, accessibility for multiple regions
- Experience with performance optimization for desktop apps (memory usage, startup time, rendering performance, high-DPI support, responsiveness under load)
- Experience with writing automated tests for UI — unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks- Think you’re a good fit for this job?
- Tell us more about yourself and why you’re interested in the role when you apply
- And don’t forget to include links to your portfolio and LinkedIn
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