About

hasumikin is a programmer.

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As of 2025:

Summary

  • A cloud architect for web applications with 10+ years of career
  • Serving as a tech leader in almost all projects to decide technical stack, to define database schema and to write backend program

Core Skills

  • Ruby on Rails (11 years)
  • AWS (14 years)
  • Technical leader (13 years)

Capabilities

  • Programming related
    • Ruby
    • C
    • RDBMS schema design
    • NoSQL
    • Git
    • Linux and Docker
  • Cloud related
    • Serverless framework
    • Terraform
    • CI/CD
  • IoT related
    • Circuit design / KiCad
    • 3D modeling / Rhinoceros

Personal Works

As the Creator

  • PicoRuby
    An mruby compatible Ruby implementation for one-chip microcontrollers
  • R2P2
    PicoRuby-based shell system for Raspberry Pi Pico (2) (W)
  • PRK Firmware
    A keyboard firmware framework written in PicoRuby

As a Committer

Publications

Presentations | Workshops

Slides: https://slide.rabbit-shocker.org/authors/hasumikin/

Honors & Awards

Grants

Education

  • Chiba University, Chiba, Japan
    Master of Engineering in Design and Architectural Science
    Completed in 2000 / GPA 4.00
  • Chiba University, Chiba, Japan
    Bachelor of Engineering in Architecture
    Graduated in 1998 / GPA 3.78

Evidence