C+NET Field App

Overview

A purpose-built Android field app for waste-management agents — the people on the ground collecting and sorting recyclables. It’s designed for the reality of that job: rugged devices, patchy or no connectivity, and a workflow that can’t stop to wait for a network. The app is distributed and locked down through MDM/EMM fleet management, not the public stores.

My Role

Sole engineer for four years. I built the app from scratch and owned every layer — the offline-first data sync, the QR-code data exchange between agents and assets, and the MDM/EMM fleet-management setup that keeps a managed device fleet provisioned and up to date.

Key Challenges

• Low-connectivity by design. Agents work where there’s often no signal, so the app is offline-first: it captures and queues everything locally and reconciles with the backend opportunistically, never blocking the agent’s workflow.
• QR-code data exchange. Routes, containers, and pickups are identified and handed off via QR codes, so data moves reliably between agents and assets without a live connection.
• Managed device fleet. I set up MDM/EMM fleet management from scratch so the client could provision, configure, and update the rugged devices in the field at scale.

Outcome

Four years of continuous feature development with zero critical production incidents — a field tool that field workers actually relied on every day, in conditions most apps would fall over in.