I will help you develop or fix cpp qt wpf csharp program

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echo150
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echo150
Helon Echo

About this gig

Hi! Im a professional desktop application developer with 4+ years of hands-on experience building and maintaining software with C++, Qt, WPF, and C#、Go.


Whether you need to fix a bug, add a new feature, refactor messy code, or build a complete custom desktop app from scratch, Ive got you covered.


I specialize in industrial automation, UI/UX design, performance optimization, and legacy system maintenance. I write clean, well-structured, and maintainable code with optional detailed comments, and Ill deliver fully functional applications with source code included.


What I offer:

  • Bug fixes & error troubleshooting
  • New feature development & integration
  • Qt / WPF UI design & customization
  • Code refactoring & performance optimization
  • Full application development (C++/C#)
  • Clean, commented, and maintainable source code


Before placing an order, please message me with your project details so I can confirm scope, timeline, and price. Im available for quick consultations and will always communicate clearly to ensure your project meets your expectations.


Lets build something great together!

Get to know Helon Echo

Helon Echo
5.0(3)
  • FromChina
  • Member sinceMay 2025
  • Avg. response time3 hours
  • Last delivery2 weeks
  • Languages

    English, Chinese
Hi! I’m Hellon, a bilingual (English ⇄ Chinese) software developer with many years of experience in desktop and backend development. I specialize in technical translation, software documentation, API content, and assisting with Chinese platforms like WeChat or QQ. With a programmer’s precision, I ensure accurate, clear, and professional translations delivered on time. Let’s make your project smooth and precise!