Gary Campbell

Spearheaded integration of React Native into existing native Android environments by building robust native bridge modules to support complex cross-platform data passing and feature requirements. Modernized application architecture by implementing Dagger for dependency injection and Moshi for streamlined JSON parsing. Drove key architectural decisions and executed cross-platform migrations to reduce native technical debt while improving maintainability and scalability.

Worked as the sole developer on the DragonPass project, architecting and implementing a messaging layer on AWS (EC2) using Java 11 and Spring Boot. Built a data pipeline to ingest pipe-delimited documents, transform them to CSV, validate fields, and generate errors for invalid data. Managed bidirectional communication with international endpoints and persisted validated and merged data to an SQL database.

Led design, development, and debugging of multiple applications, translating business requirements into technical specifications and maintaining software quality through code reviews and mentoring. Key work included a paperless commuter ticket booking application with Firebase authentication, Google Maps, EMV payments, QR ticketing, and Bluetooth/WiFi printer connectivity. Also delivered an access control system with multi-threading via a recycling pool, Camera2 image capture, barcode reading, and floor plan GPS tracking; additionally served as sole developer/architect for an organization app with chat, media streaming, RSS, courses, and social integrations.