I am a software engineer with more than 10 years of work experience.
I used to focus on iOS/Swift for about 7 years, however, I have been expanding my technical area and writing codes for various platforms now, including iOS, web frontend, backend, and some scripts using Swift, TypeScript, Elm, Python, and so on.

As my technical area has been expanding, I’m looking for projects in these 3 categories. Combining these is also possible.

Please check my CV and profile . My portfolio, which contains mobile app UI that I developed, is available on request. Also, please check my 10 years as a software engineer.

If you are interested in working with me or have some questions, please contact me at yoshikuni.kato.g@gmail.com.

I’m looking forward to discussing projects further with you.


iOS/Swift projects

  • Specialities:
    • Swift
    • Functional Reactive Programming - RxSwift, ReactiveSwift, Combine
    • Architecture/Logic Design - MVVM, MVC, TCA, etc
    • Complex UI development - UIKit, SwiftUI, CoreAnimation
    • Firebase, Firestore
    • Pair-programming, scrum development flow
  • Time: Up to 32 hours per week
  • Rate example: €70/hour
    I change my rate depending on the project difficulty, my responsibility, and so on. Please contact me for more details.

Fullstack projects

  • Platforms:
    • Web frontend - TS/JS, Elm
    • Web backend - TS/JS, Python
    • Some system scripts - Python, etc
  • Time: Flexible (from part-time to fulltime)
  • Rate example: €50/hour
    I change my rate depending on the project difficulty, my responsibility, and so on. Please contact me for more details.

Tooling/language projects

  • Interests:
    • Software analysis
    • Building development tools
    • Designing programming languages including DSL
    • Anything that contributes to the culture of programming and development!
  • Time: Flexible (from part-time to fulltime)
  • Rate: Flexible (based on the project)

Thank you for reading. I’m looking forward to discussing projects further with you!