Ren Yamamoto
Based in United States
I help small businesses and agencies ship practical software fast: API integrations, webhooks, ops dashboards, and production bugfixes.
Most of my work looks like this:
Wire systems together (REST/webhooks, Stripe, Toast, Twilio, Zapier, Supabase)
Build or repair Node.js / TypeScript backends and React / Next.js frontends
Model data in PostgreSQL and ship Metabase / SQL / BI views clients can actually use
Fix maps, GPS, telemetry, and route-tracking pipelines (PostGIS, MapLibre)
Automate Sheets → SMS/notifications and inventory/scheduling workflows
Debug React Native / mobile and web production issues under a deadline
Skills
- Node.js
- PostgreSQL
- React
- TypeScript
- API Integration
- REST API
- Next.js
- JavaScript
- Supabase
- SQL
- Data Visualization
- React Native
- Python
- Google Sheets
- Zapier
- Mobile App Development
- Stripe API
- Flutter
- Tailwind CSS
- Inventory Management
Hire Ren Yamamoto on FreddyWorks with milestone escrow settled in USDC on Polygon.