Yusuke Hayashi

I love building useful things with code, and I enjoy long rides on my road bike.

For consulting and project inquiries, see haya.company (AI implementation support & workflow improvement, end-to-end from scoping to production rollout).

Things I love

• Shipping products end-to-end (backend / frontend / infra)
• Improving developer experience (tooling, automation, documentation)
• Designing scalable and maintainable systems (often on AWS)
• Learning fast and sharing what I learn

Tech I enjoy

Stats

WakaTime (auto-updated)

📊 This Week I Spent My Time On

💬 Programming Languages: 
TypeScript               15 hrs 21 mins      ███████████░░░░░░░░░░░░░░   44.16 % 
Markdown                 8 hrs 52 mins       ██████░░░░░░░░░░░░░░░░░░░   25.54 % 
YAML                     2 hrs 44 mins       ██░░░░░░░░░░░░░░░░░░░░░░░   07.88 % 
JSON                     2 hrs 38 mins       ██░░░░░░░░░░░░░░░░░░░░░░░   07.59 % 
Other                    1 hr 49 mins        █░░░░░░░░░░░░░░░░░░░░░░░░   05.26 % 

🔥 Editors: 
Cursor                   34 hrs 13 mins      █████████████████████████   98.41 % 
Antigravity              33 mins             ░░░░░░░░░░░░░░░░░░░░░░░░░   01.59 % 

Last Updated on 2026-01-30 15:08:09 UTC