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Work
Not concepts. Things I built, shipped, and still maintain.
Machi, Shangence, and this site are gathered here with the context I can share: what I was trying to solve, what I chose, how I built it, and what still needs care.
5 casesFilter by stack, product type, and evidence of capability
Featured CaseMachi / Web
Machi Web and Shared Python Backend
The Web client and shared backend for Machi, a city-life community platform covering posts, housing, second-hand listings, jobs, messages, notifications, membership and media upload.
Next.jsReactTypeScriptPython
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Featured CaseMachi / iOS
Machi iOS Native City-Life Client
An offline-first iOS client built with SwiftUI and SwiftData, covering home, discovery, publishing, notifications, messages, profile and settings.
SwiftUISwiftDataKeychainURLSession
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Featured CaseMachi / Android
Machi Android Native City-Life Client
A native Android client built with Kotlin and Jetpack Compose, bringing Machi to Android users.
KotlinJetpack ComposeAndroidREST API
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Featured CaseSaaS / Commercial service
Shangence
A business-risk assessment service for the Japanese market, with a 7-step assessment, rule-based scoring, Stripe JPY payments, PDF reports and an admin console.
Next.jsTypeScriptPrismaPostgreSQL
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Featured CasePersonal site / CMS
yaokai.me Personal Site and CMS
The site you are reading. Built with Next.js 16 and Prisma, with three languages, writing, work, resume, contact form and admin CMS.
Next.js 16ReactTypeScriptPrisma
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