Hiroto YAMAKAWA

Java User Group Hokkaido, Japan PostgreSQL User Group & Claude Community Ambassador. R&D: Software Engineering, Learning Technology. 🥰:#Sake #HeartofAgile

• Chitose Inst. Sci. Tech.
• Hookaido, Japan
• sites.google.com/site/cistyamakawa/
• github.com/gishi-yama
• Joined October 2026

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