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Senior Software Engineer, Windows/Desktop Applications - Fukuoka, Japan

1 hour, 21 minutes ago
Japan
Full-time
Senior
Software Engineer
Software Development
C# C++ CI/CD .NET
Apply Now
Speechify

Speechify

Speechify is a top-rated text to speech AI app with voice cloning and dubbing features, serving over 10 million users including students and professionals.

Internet Software & Services
51-250
Founded 2017
View All Jobs 1783

Description

  • Lead the design, architecture, and development of native Windows desktop applications.
  • Define and enforce best practices for code architecture, performance, memory usage, responsiveness, compatibility, and maintainability.
  • Drive accessibility efforts, including support for Windows accessibility APIs and inclusive UI behavior.
  • Collaborate with product designers, UX researchers, QA, and other stakeholders on feature planning and Windows UI/UX architecture.
  • Own features through the full lifecycle from conception and design to implementation, testing, release, and maintenance.
  • Diagnose and resolve complex bugs, performance bottlenecks, memory leaks, rendering issues, and compatibility problems.
  • Mentor other engineers and contribute to technical direction and architecture decisions.
  • Help shape long-term roadmap and feature strategy for the Windows platform.

Requirements

  • 3+ years of experience in Windows desktop application development using Windows App SDK, WinUI, C#, and XAML.
  • Experience with native Windows code such as C++, Win32, WinRT, or COM is strongly preferred.
  • Deep understanding of Windows application architecture, including interop between managed .NET code and native code.
  • Proven track record of designing, building, and shipping production-quality desktop applications.
  • Strong experience with accessibility APIs on Windows, such as Microsoft UI Automation or similar frameworks.
  • Solid software engineering fundamentals, including OOP, design patterns, data structures, algorithms, memory management, and multithreading or asynchronous programming.
  • Experience leading technical design, mentoring engineers, conducting code reviews, and making architecture-level decisions.
  • Strong communication skills and the ability to collaborate cross-functionally and drive consensus.
  • User-centric mindset focused on polished, intuitive, and accessible experiences.
  • Preferred experience with UI automated testing, performance optimization, localization/globalization, telemetry, CI/CD workflows, and long-term ownership of feature areas.

Benefits

  • High-impact role with direct influence on a product used by millions of users.
  • Collaborative, flat-structure engineering culture.
  • Opportunities to lead, mentor, and grow into broader technical leadership roles.
  • Flexibility, autonomy, and responsibility to own features end-to-end.
  • Purpose-driven mission focused on reliable, accessible, user-centered software.
  • 100% distributed work environment with no office.

Interested in this position?

Apply directly on the company website

Apply Now

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