Senior Software Engineer, Windows/Desktop Applications - Tokyo, Japan at Speechify | Tokyo, JPN | Rezi

Senior Software Engineer, Windows/Desktop Applications - Tokyo, Japan at Speechify

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

Speechify · Tokyo, JPN

2 months ago

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

Speechify · Tokyo, JPN

2 months ago
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About the Role

Speechify's mission is to ensure reading is never a barrier to learning. Over 50 million people use our text-to-speech products to turn reading materials into audio, enhancing comprehension and retention. We are a 100% distributed company with nearly 200 employees globally, including talent from top tech companies and academic institutions.

Responsibilities

  • Lead the design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI, C#, XAML, and C++.
  • Define and enforce best practices for Windows desktop development, covering code architecture, performance, memory usage, UI responsiveness, cross-version compatibility, and maintainability.
  • Drive accessibility efforts by integrating and validating support for accessibility APIs and ensuring UI controls, focus management, keyboard navigation, screen-reader support, and usability for users with disabilities.
  • Collaborate with product designers, UX researchers, QA, and stakeholders to shape feature planning, UI/UX architecture, and the long-term roadmap for the Windows platform.
  • Take ownership of the full lifecycle of features, from conception to maintenance, ensuring quality, reliability, and consistency.
  • Identify, diagnose, and resolve complex bugs, performance bottlenecks, memory leaks, rendering issues, or compatibility problems, proposing robust solutions.
  • Mentor other engineers, conduct code reviews, and make architecture-level decisions.

Requirements

  • 3+ years of experience in Windows desktop application development using Windows App SDK, WinUI, C#, and XAML.
  • Experience with native Windows code (C++, Win32/WinRT/COM) is ideal.
  • Deep understanding of Windows application architecture, including interop between managed 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) and a dedication to building accessible software.
  • Excellent software engineering fundamentals, including OOP, design patterns, data structures, algorithms, memory management, and multi-threading/asynchronous programming.
  • Experience leading technical design, mentoring engineers, conducting code reviews, and making architecture-level decisions.
  • Strong communication skills for articulating tradeoffs, collaborating with cross-functional teams, and driving consensus.
  • A user-centric mindset focused on building polished, intuitive, and accessible user experiences.
  • Experience writing automated tests for UI (unit, integration, UI automation) is preferred.
  • Experience with performance optimization for desktop apps is preferred.
  • Experience with localization/globalization, right-to-left UI support, and internationalization is preferred.
  • Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications is preferred.
  • Previous experience in shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications is preferred.
  • Demonstrated ability to own feature areas or modules long-term, including maintenance, refactoring, and technical debt management.

Skills

  • Windows App SDK
  • WinUI
  • C#
  • XAML
  • C++
  • Win32
  • WinRT
  • COM
  • .NET
  • Microsoft UI Automation
  • OOP
  • Design Patterns
  • Data Structures
  • Algorithms
  • Memory Management
  • Multi-threading
  • Asynchronous Programming
  • Automated UI Testing
  • Performance Optimization
  • Localization
  • Globalization
  • CI/CD
  • Release Pipelines
  • Deployment Strategies

Location

  • 100% distributed

Work Type

  • Full-time
  • Remote

Experience Level

  • 3+ years of experience in Windows desktop application development

Benefits

  • High-impact role defining architecture and shaping product future
  • Collaborative, flat-structure engineering culture
  • Opportunities to lead, mentor, and grow into technical leadership roles
  • Flexibility, autonomy, and responsibility in problem-solving and feature ownership
  • Purpose-driven mission focused on building reliable, accessible, and user-centered software

About the Company

  • Speechify's mission is to make reading accessible to everyone, ensuring it's never a barrier to learning.
  • Over 50 million users rely on Speechify's text-to-speech products to enhance their reading speed, volume, and comprehension.
  • Our products include iOS, Android, Mac apps, a Chrome Extension, and a Web App.
  • Speechify has been recognized by Google as Chrome Extension of the Year and by Apple with a 2025 Design Award for Inclusivity.
  • We operate as a 100% distributed company with nearly 200 employees globally, attracting talent from leading tech companies and academic institutions.

Equal Opportunity

  • 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.