Senior Software Engineer, Windows/Desktop Applications - Belfast, United Kingdom
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Responsibilities
Lead the design, architecture, and development of native Windows desktop applications while enforcing best practices for performance and maintainability. Drive accessibility efforts and collaborate with cross-functional teams to shape the long-term product roadmap.
Requirements
Requires 3+ years of experience in Windows desktop development using C#, XAML, and WinUI, with a strong background in accessibility APIs. Candidates must demonstrate expertise in software engineering fundamentals and a track record of shipping production-quality applications.
Full job description
Mission
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 turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its 2025 Design Award winner for Inclusivity.
Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies
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: 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.
An ideal candidate should have
Required:
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).
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, with an emphasis on reliability, performance, scalability, and maintainability.
Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar), and a dedication to building accessible and inclusive software.
Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading 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.
Preferred / Bonus:
Experience with writing automated tests for UI — unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks.
Experience with performance optimization for desktop apps (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 in 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.
What we offer
A high-impact role: you will define architecture, shape the future of our Windows product, and directly influence what millions of users see and experience.
A collaborative, flat-structure engineering culture — you are not just a coder, but a builder and a decision-maker.
Opportunities to lead — mentor others, steer technical direction, and grow into broader technical leadership (e.g. Tech Lead, Architect).
Flexibility, autonomy, and responsibility: you define how to solve problems, own features end-to-end, and contribute to long-term product vision.
A purpose-driven mission: building software that’s reliable, accessible, and user-centered — making a real difference for people.
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.
Not looking but know someone who would make a great fit? Refer them!
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.
Related keywords
Windows App SDKWinUIC#XAMLC++Win32WinRTCOM.NETMicrosoft UI AutomationOOPDesign PatternsMulti-threadingAsynchronous ProgrammingCI/CDTelemetry
Speechify is the Voice AI Assistant you’ve always wanted.
Speechify reads, types, talks, and answers for you. Trusted by 50+ million users.
Want to read faster? Speechify reads any Google Doc, PDF, webpage, or book aloud in 1000+ lifelike voices across 60+ languages, at up to 4.5x speed.
Have a question? Just ask – Speechify already has context from the articles, books, and documents on your screen. It’s like talking to ChatGPT, but faster and with more context.
Want to type faster? Speak naturally and Speechify will type every word for you.
Speechify combines the world’s most human-sounding text to speech (TTS), voice typing dictation, and voice assistant technology.
== Speechify Features ==
➤ Listen at any speed
Hear anything up to 4.5× faster (900 wpm). Learn more in less time with voices that sound natural even at high speed.
➤ Listen on desktop or mobile devices.
Your library syncs instantly across desktop and mobile. Start reading on Chrome, continue on iOS or Android – anytime, anywhere.
➤ Human-like voices
Speechify voices feel real, including official partners like Snoop Dogg, MrBeast, and Gwyneth Paltrow and 200+ others.
➤ Screenshot image to audio
Take a picture or screenshot of any text and Speechify will read it aloud instantly.
➤ Floating widget
Always at your fingertips – move it, dock it, or hide it entirely for a distraction-free experience.
➤ Voice Typing
Dictate emails, essays, or prompts directly into any website. Type 3–5× faster just by talking.
➤ Talk to Speechify
Ask: “What are the main takeaways?” or “Quiz me on this essay.” Speechify understands your articles, documents, and anything on your screen – it’s your personal AI reader, assistant, and tutor in one.
➤ Other features
• Active highlighting for reading along.
• Inline player on every site.
• One subscription synced across all devices.
== Joining Speechify ==
We're actively hiring across every role.
Please go to speechify.com/careers to apply!
Offices: Remote, US · Remote, AL · Remote, BA · Remote, GE · Remote, XK
How many Engineering jobs are open in Belfast, United Kingdom right now?
There are currently 158 open engineering positions in Belfast, United Kingdom listed on Clera. New openings are added daily as companies post roles.
Which companies are hiring for Engineering roles in Belfast, United Kingdom?
Companies currently hiring include Navantia UK, PA Consulting, Ralliant, Aflac Northern Ireland, Amey, among others. Browse the listings above to see every active employer.
Are there remote or hybrid Engineering jobs in Belfast, United Kingdom?
Yes — 79 of the 158 open engineering positions offer remote or hybrid work (14 remote, 65 hybrid).
How do I apply for Engineering jobs in Belfast, United Kingdom?
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.