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@yhay81
yhay81
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Yusuke Hayashi yhay81

CEO/Software Engineer at haya Inc.

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  • Pro

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@arch8jp

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yhay81 /README.md

Yusuke Hayashi

Zenn LinkedIn Mail

Profile Views GitHub Followers

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

Python TypeScript React Next.js Vercel AWS Azure

Stats

Profile Details

GitHub Stats Top Languages

Productive Time Most Commit Language

GitHub Activity Graph

WakaTime (auto-updated)

Code Time

๐Ÿ“Š This Week I Spent My Time On

๐Ÿ’ฌ Programming Languages: 
TypeScript 15 hrs 21 mins โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 44.16 % 
Markdown 8 hrs 52 mins โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 25.54 % 
YAML 2 hrs 44 mins โ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 07.88 % 
JSON 2 hrs 38 mins โ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 07.59 % 
Other 1 hr 49 mins โ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 05.26 % 
๐Ÿ”ฅ Editors: 
Cursor 34 hrs 13 mins โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ 98.41 % 
Antigravity 33 mins โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 01.59 %

Last Updated on 2026ๅนด01ๆœˆ30ๆ—ฅ 15:08:09 UTC

Pinned Loading

  1. profile profile Public

    Yusuke Hayashi's profile page

    TypeScript 1

  2. GASlacker GASlacker Public

    Google App Script interface for Slack API

    TypeScript 28 11

  3. code-sortings code-sortings Public

    ใ‚ฝใƒผใƒˆใ‚ขใƒซใ‚ดใƒชใ‚บใƒ ใ‚’ใ‚ณใƒผใƒ‡ใ‚ฃใƒณใ‚ฐ

    CSS 2

  4. pythonic-peano-arithmetic pythonic-peano-arithmetic Public

    Create algebra from Peano axioms

    Python 3

  5. ja-translation-todo ja-translation-todo Public

    ๆ—ฅๆœฌ่ชžใธใฎ็ฟป่จณใงใ‚ณใƒณใƒˆใƒชใƒ“ใƒฅใƒผใƒˆใงใใ‚‹GitHubใฎใƒชใƒใ‚ธใƒˆใƒชใƒชใ‚นใƒˆ

    36

  6. yhay81 yhay81 Public

    GitHub public profile

    1

AltStyle ใซใ‚ˆใฃใฆๅค‰ๆ›ใ•ใ‚ŒใŸใƒšใƒผใ‚ธ (->ใ‚ชใƒชใ‚ธใƒŠใƒซ) /