TAKUMI SHIGENAGA
Business systems,
designed and built.
Full-stack developer on the Gold Coast, nearly five years on client and in-house business systems — server, web and mobile in one TypeScript codebase.
I have taken one from nothing to delivery on my own in three and a half months, and led a team of three to five on another that runs to 62 tables and 171,000 lines of TypeScript.
Gold Coast, AU · open to 482 sponsorship
Background, work rights and stackSELECTED WORKS
- 01
Fleet Management System
A vehicle fleet system for an energy services company, delivered solo in three and a half months using an agent-driven workflow built around the fact that design time, not code output, was the constraint.
- Period
- Mar 2026 – Jun 2026
- Team
- Solo, working through a multi-agent development workflow
- TypeScript
- Hono
- Drizzle ORM
- Cloudflare Workers
- React
- Vite
- Tailwind CSS
- Expo
- React Native
- PostgreSQL
- Supabase
- GitHub Actions
- 02
Enterprise Groupware
An internal portal that replaced a stack of separate SaaS subscriptions for a 1,000-person staffing company, with a permission model built around how the organisation actually delegates authority.
- Period
- May 2023 – Jun 2026
- Team
- 3–5 developers at a time (22 people over three years)
- TypeScript
- NestJS
- TypeORM
- MySQL
- Socket.io
- Next.js
- React Native
- Google Cloud Run
- Cloud SQL
- Cloud Storage
- Cloud Build
- 03
Business Card Management App
A business card app for companies, priced at roughly half what comparable products charge by letting each customer choose how much recognition accuracy they are paying for.
- Period
- Aug 2025 – Jun 2026
- Team
- Mostly solo, with a contractor on part of the build under my review
- TypeScript
- NestJS
- TypeORM
- PostgreSQL
- Next.js
- React Native
- Google Cloud Run
- Cloud SQL
- Cloudflare R2
- Cloud Build
- fastlane