Senior Software Engineer, Windows​/Desktop - Lewisville

Senior Software Engineer, Windows/Desktop Applications – Lewisville, USA

Speechify is looking for a Senior Software Engineer to lead the design, architecture, and development of native Windows desktop applications.

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify's text-to-speech products to convert reading material into audio, including PDF, books, Google Docs, news articles, and websites. Speechify's products include iOS, Android, Mac, Chrome Extension, and Web App. Google named Speechify the Chrome Extension of the Year and Apple awarded Speechify its 2025 Design Award for inclusivity.

• 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 by integrating and validating support for accessibility APIs (e.g., Microsoft UI Automation), ensuring 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 the 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 solutions.

• 3+ years in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML – and ideally additional experience with native Windows code (C++, Win
  32/WinRT/COM).
• Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code.
• Proven track record of designing, building, and shipping production‑quality desktop applications, emphasizing reliability, performance, scalability, and maintainability.
• Strong experience with accessibility APIs on Windows (e.g., Microsoft UI Automation), and a dedication to building accessible and inclusive software.
• Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multithreading or asynchronous programming (where relevant).
• Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture‑level decisions.
• Strong communication skills; ability to articulate tradeoffs, collaborate with cross‑functional teams, and drive consensus.
• A user‑centric mindset: focus on building polished, intuitive, and accessible experiences for end users.

• Experience writing automated tests for UI — unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks.
• Experience optimizing desktop app performance (memory usage, startup time, rendering performance, high‑DPI support, responsiveness under load).
• Experience with localization/globalization, right‑to‑left UI support, internationalization, accessibility for multiple regions.
• Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications.
• Previous experience shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications.
• Demonstrated ability to take ownership of feature areas or modules and drive them long‑term, including maintenance, refactoring, and technical debt management.

• A high‑impact role where you define architecture, shape the future of our Windows product, and directly influence millions of users.
• A collaborative, flat‑structure engineering culture where you are not just a coder but a builder and decision‑maker.
• Opportunities to lead — mentor…