Senior Software Engineer, Windows/Desktop Applications – Palma de Mallorca, Spain Mission
Speechify's mission is to make reading a barrier to learning. Over 50 million users rely on our text‐to‐speech products—PDFs, books, Google Docs, news articles, websites—to read faster, read more and remember more. We offer iOS, Android, Mac, Chrome and Web Apps.
Today nearly 200 people around the globe work remotely for Speechify across frontend, backend, AI research and more.
What You'll Do 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: architecture, performance, memory usage, responsive UI, cross‐version compatibility (Windows 10/11+), and maintainability.
Drive accessibility: integrate and validate support for accessibility APIs (e.g., Microsoft UI Automation), 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 the long‐term roadmap for the Windows platform.
Identify, diagnose and resolve complex bugs, performance bottlenecks, memory leaks, rendering issues or compatibility problems, and propose robust architectural or design solutions.
Qualifications Required:
3+ years of 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).
Deep understanding of Windows application architecture, including interop between managed (.NET) and native code.
Proven track record of designing, building, shipping production‐quality desktop applications with emphasis on reliability, performance, scalability and maintainability.
Strong experience with Windows accessibility APIs and commitment to building inclusive software.
Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi‐threading or asynchronous programming.
Experience leading technical design, mentoring, code reviews and making architecture‐level decisions.
Strong communication skills and user‐centric mindset.
Preferred / Bonus:
Experience writing automated UI tests—unit, integration, UI automation.
Performance optimization for desktop apps (memory usage, startup time, rendering performance).
Localization/globalization, right‐to‐left UI support, internationalization, multi‐region accessibility.
Telemetry, analytics, crash reporting, logging, error monitoring.
CI/CD workflows, release pipelines and deployment strategies for desktop applications.
Ownership of feature areas, maintenance, refactoring and technical debt management.
What We Offer High‐impact role defining architecture, shaping the Windows product and influencing millions of users.
Collaborative, flat‐structure engineering culture—build, decide, grow into leadership roles.
Flexibility, autonomy and responsibility: own features end‐to‐end and contribute to long‐term vision.
A purpose‐driven mission: reliable, accessible, user‐centered software that matters.
Application Tell us about yourself and why you're interested in the role when you apply. Include links to your portfolio and LinkedIn.
Speechify is committed to a diverse and inclusive workplace. Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age or other legally protected status.
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