Justine began his programming career in 2015 as a freelance developer and entered the tech industry in 2017 as a Native Android Developer. He has since contributed to diverse mobile projects, including banking, ticketing, in-house enterprise, government, health and wellness, insurance, and messaging applications—many of which remain live on the Google Play Store and Apple App Store. He also has strong legacy Native Mobile App Development experience, particularly in maintaining and modernizing older applications built with MVP, MVC, and MVVM architecture patterns. In 2019, he expanded into Flutter development, handling both frontend and backend work for cross-platform applications available in multiple countries. In 2020, Justine began his career at a major global tech firm, further advancing his professional exposure to large-scale systems, enterprise clients, and Agile delivery environments. He also possesses strong expertise in SDK and modular development, designing reusable libraries and scalable architectures for enterprise-level systems. An Agile developer familiar with CI/CD processes, Justine is currently working as a Functional Tester to broaden his technical and analytical expertise while continuing to grow in the software industry.