PWG Windows & Doors - Mobile App

Private (Client Work)

Project Overview

Developed a React Native mobile application for PWG Windows & Doors field engineers using Expo SDK 54 with native modules. The app enables efficient on-site assessments of custom windows and doors, featuring robust offline capabilities, data synchronization, and enterprise-level state management to streamline workflows and replace paper-based processes.

My Role & Impact

Working as part of the development team, my key contributions include:

Replaced manual paper forms with digital workflows, reducing admin time for engineers
Implemented offline-first architecture allowing engineers to work in areas with poor connectivity
Built a queue-based sync system ensuring no data loss between field and office
Integrated camera and signature capture for on-site documentation

Technical Overview

Built with React Native and Expo SDK 54, this application demonstrates mobile development expertise with a focus on offline-first architecture and reliable state management. The project includes queue-based data synchronization, native module integration, and error tracking via Sentry.

Architecture & Stack

Platform: React Native with Expo SDK 54
Language: TypeScript
Build: Expo Dev Client with Native Modules
Navigation: Expo Router
State Management: Context API, AsyncStorage
Architecture: Offline-first with queue-based sync
API: RESTful API integration (with retry logic)
Error Tracking: Sentry
Styling: NativeWind (Tailwind for RN) or similar

Core Functionality

Comprehensive offline data capture and storage.
Automated background data synchronization.
Queue system for managing offline actions (create, update, delete).
Custom hooks for encapsulating complex business logic.
Native module integration for device-specific features (e.g., camera, GPS).
Detailed error reporting and monitoring.