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w-red TERASHI, yohei

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Amami City

yohei TERASHI (w-red)

C# / .NET Engineer specializing in Windows Desktop & Reactive Programming

🛠 Languages & Technologies

Main Stacks

C#
.NET
C++

Desktop & Frameworks

WPF
WinForms
Reactive Extensions

📝 About Me

Hello, I am yohei TERASHI (w-red), a software engineer based in Japan with a strong focus on Windows desktop ecosystems and system-level development.

Core Expertise & Experience

  • Windows Desktop Applications (WinForms / C#)
    For over five years, I have specialized in Windows Forms development driven by business requirements. My core mission is to modernize these mature systems by integrating reactive programming patterns, bridging the gap between legacy frameworks and modern reactive paradigms.
  • Medical & POS Solutions (WPF)
    I have extensive experience in the medical domain, developing sophisticated POS systems using WPF. This involved architecting a generalized layer for OPOS to drive and control various types of automated cash dispensing hardware seamlessly.
  • System-Level Development (C/C++)
    Beyond high-level UI frameworks, I have contributed to GPS middleware development using C/C++, giving me a deep understanding of performance-critical, low-level logic.

OSS Contributions & Passions

I am the maintainer of several OSS libraries, including RxExtends4WinForms and R3Extends4WinForms, which aim to enhance the developer experience in the WinForms environment.
I am particularly fascinated by the potential of R3. While I approach its profound architecture with a learner's mindset—acknowledging that I am still exploring its depths—I am dedicated to investigating how these next-generation reactive libraries can improve software reliability and developer productivity.

🚀 Status & Focus

  • 🔭 Current Project: Enhancing WinForms capabilities with R3 and Rx.NET.
  • 🌱 Learning: Deep diving into modern reactive architectures and asynchronous patterns.
  • 💬 Ask me about: C#, WinForms modernization, and hardware integration (OPOS).
@w-red

My goal is get the coffee.

Featured work

  1. w-red/R3Extends4WinForms

    This project is the R3 extension methods library.

    C#
  2. w-red/RxExtends4WinForms

    Reactive Extensions for WinForms

    C#

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