hsb.horse
I am a full‑stack engineer based in Tokyo, Japan. I work across backend, frontend, and infrastructure, with a focus on practical design and implementation.
I’m especially strong in reducing technical debt and improving performance. I care about building products that are readable, maintainable, and fast.
Focus Areas
- Full‑stack development (applications through infrastructure)
- Modernization and replacement of web applications
- Performance tuning
- Developer productivity (schema‑driven development, CI/CD, IaC)
Skills
Languages
- Java / Kotlin
- Go
- TypeScript / JavaScript
- SQL
- Python / Swift (as needed)
Frameworks
- React (including Next.js)
- Astro
- Vue.js (Nuxt.js)
- Svelte
- Echo (Go)
- Spring Boot (Java/Kotlin)
Cloud & Infrastructure
- AWS (design, build, and operate core services)
- CloudFlare (personal use)
- Docker
- Basic database operations (MySQL / PostgreSQL / SQLite)
CI/CD
- GitHub Actions
- Jenkins
- Bitbucket Pipelines