Capabilities

A compact stack for serious software products.

The toolkit is broad, but the focus is narrow: ship fast interfaces that stay maintainable as teams, data, and product scope grow.

Frontend

React 18/19
TypeScript
Next.js 15 (App Router, RSC)
Redux Toolkit
Zustand
TanStack Query
Vue 3 (Composition API, Pinia)
Tailwind CSS

Performance

Core Web Vitals (LCP, INP, CLS)
List virtualization
Canvas optimization
Code splitting
Bundle analysis
Lighthouse CI

Accessibility

WCAG 2.1 AA
ARIA
Semantic HTML
Keyboard navigation
axe-core

Testing

Vitest
Jest
Cypress
React Testing Library
Unit, integration & E2E in CI

APIs & Real-time

REST
WebSocket
Socket.IO
JWT
OAuth 2.0
Stripe (Checkout, Webhooks)
NextAuth.js

Tooling & AI

Vite
Webpack
Docker
GitHub Actions
pnpm workspaces
Storybook
Cursor
Claude

Toolkit

The stack I reach for.

A compact set of tools chosen for performance, maintainability, and team velocity.

React

TypeScript

Next.js

Node.js

TanStack Query

Redux

Tailwind CSS

NestJS

Stripe

Vitest

Cypress

Storybook

GitHub Actions

SonarQube

Docker

Supabase

Vercel

Technical wins

Optimization work that changed product behavior.

35%

Reduced initial JavaScript payload by 35% (1.4 MB to 910 KB) through route-level code splitting aligned with RBAC route boundaries, improving LCP by 1.2s.

58-60 FPS

Processed nearly 5,000 WebSocket events per minute while sustaining 58-60 FPS and keeping INP below 120ms under burst load.

60 FPS

Improved a 2,000-node React and Konva floor map from 30 to 60 FPS while reducing React commit time by 40%.

90%

Introduced test gates with 90% coverage on critical paths, reducing production regressions by approximately 25% over eight sprints.

Led a five-person frontend team responsible for key modules of an HR platform serving 100+ customers in Japan.

Mentored two junior engineers to independent feature ownership within six months.