AboutAbout

Hi, I'm Juansah. IT Developer at Flexofast, Indonesia. I build systems that teams use every day.

At Flexofast I work on internal tools for finance, warehouse, and delivery teams: a billing dashboard, returns management across 8 marketplaces, a transport management system, and a history of public TikTok data.

After hours I build Garasi Lab: everyday apps anyone can use, built and maintained by one developer. Right now that is RuteKita for KRL and TransJakarta, and Kaskita for family finances.

One thing I hold on to: missing data is never filled with a guess. In FlexoTrend, unpublished numbers are marked unavailable, and in Kaskita the AI assistant only reads what has been recorded.

For clients I do workflow automation, motion for selling products, apps, and websites, from design to live and looked after.

Toolkit

• Next.js
• React
• NestJS
• Express
• Prisma
• FastAPI
• Python / Flask
• Flutter
• React Native
• Expo
• PostgreSQL
• SQL Server
• Redis
• MapLibre