Senior Software Engineer, Windows/Desktop Applications - Leeds, United Kingdom

Mission and company

What you'll do

• Lead design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI or related frameworks, C#, XAML, and C++ when needed.
• Define best practices for architecture, performance, memory usage, responsive UI, Windows compatibility, and maintainability.
• Integrate and validate Windows accessibility APIs, including support for controls, focus, keyboard navigation, and screen readers.
• Collaborate with designers, UX researchers, QA, and stakeholders on planning, UI/UX architecture, and the Windows roadmap.
• Own features through conception, design, implementation, testing, release, and maintenance.
• Diagnose complex bugs, performance bottlenecks, memory leaks, rendering issues, and compatibility problems.
• Propose robust architectural or design solutions.

Required qualifications

• At least 3 years of Windows desktop application development using Windows App SDK, WinUI or similar, C#, and XAML.
• Deep understanding of Windows application architecture and managed-to-native code interoperation.
• Experience designing, building, and shipping production-quality desktop applications.
• Strong experience with Windows accessibility APIs and accessible software development.
• Strong software engineering fundamentals, including OOP, design patterns, algorithms, memory management, and multithreading or asynchronous programming.
• Experience leading technical design, mentoring engineers, conducting code reviews, and making architecture decisions.
• Strong communication skills and a user-centric mindset.

Preferred and bonus experience

• Automated UI testing and relevant testing frameworks.
• Desktop performance optimization, including memory, startup time, rendering, high-DPI support, and responsiveness.
• Localization, globalization, right-to-left UI support, or internationalization.
• Telemetry, analytics, crash reporting, logging, or error monitoring.
• CI/CD workflows, release pipelines, or deployment strategies for desktop applications.
• Long-term ownership of feature areas, including maintenance, refactoring, and technical debt management.

Workplace

• Speechify operates as a 100% distributed company with no office.

What we offer

• High-impact opportunity to define architecture and shape the Windows product used by millions of people.
• Collaborative, flat-structure engineering culture with opportunities to mentor and steer technical direction.
• Flexibility, autonomy, and responsibility for solving problems and owning features end to end.
• Purpose-driven work focused on reliable, accessible, and user-centered software.

Application notes

• Applicants are asked to describe their background and interest and include portfolio and LinkedIn links.