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About Me

Technical lead of Android app development at Fuller, Inc. Have 5 years experience of software development, specialized in mobile front-end. Master of Public Governance. Bachelor of Engineering in Material Science. Living in Tsukuba, Japan.

  • Google Certified Associate Android Developer (2020)
  • Oracle Certified Java Programmer, Silver SE 8 (2018)
  • 応用情報技術者 (Applied Information Technology Engineer, a qualification for software engineers in Japan) (2018)

Recent Works

Android Native App (2021)

Worked as the Lead Android Developer

Designed the overall architecture of Android native app. The architecture was MVVM fully reactive and layerd. Newly adopted Kotlin Flow and Dagger Hilt. Launched CI/CD flow with GitHub Actions.

Flutter Cross Platform App (iOS, Android) (2020)

Worked as the Lead Flutter Developer.

Designed the overall architecture of Flutter cross platform app for iOS and Android. The architecture was MVVM fully reactive and layerd. Newly adopted Riverpod, Provider, and Firestore as the backend.


Kotlin Stone

Small hobby project :) The library offers Scala like Option and Either for Kotlin.

For More Information

For more information, see my blog:

Thank you!


  1. Kotlin Option and Either.


  2. solving programming contest problems from AtCoder with Scala


  3. flutter CI sample with GitHub Actions


  4. Sample codes from Writing an Interpreter in Go


5,455 contributions in the last year

Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Mon Wed Fri

Contribution activity

September 2021

Created 1 repository
171 contributions in private repositories Sep 1 – Sep 22

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