Internal Tools / Operations

CST Goods-In.

Inventory and customer check-in mobile system that cut processing time by 80% for a UK logistics business.

01_Role
Senior Full-Stack Developer (Contract)
02_Category
Internal Tools / Operations
03_Year
2024
04_Status
Shipped

The CST Goods-In System streamlines inventory management and customer check-in in a UK logistics operation. It was built to address inefficiencies in supply chain operations — primarily fragile manual processes, slow check-ins, and unclear damage reporting.

I developed a React Native mobile client backed by a FastAPI + Python service, integrated with ConnectWise REST APIs for data management. The backend ran on Render with Sentry for observability and Swagger-validated APIs; the client was built with Expo and Gluestack UI, deployed to the App Store. Processing times dropped by 80% and API response times went from 500ms to 200ms.

05_Architectural Overview4 pillars
01MOBILE_CLIENT

React Native + Expo app with camera-based damage reporting, RFID scanning, and offline-tolerant state via Redux.

02FASTAPI_SERVICE

Python backend with ConnectWise REST integrations, MongoDB persistence, and version-controlled API surfaces.

03DELIVERY_FLOWS

Full or partial delivery, printed labels and slips, ticket management, and photo-backed exception handling.

04PRODUCTION_OPS

Deployed on Render with Sentry alerting and Swagger-verified endpoints. API response times cut from 500ms → 200ms.