Jastine Formentera

Led mobile development of StepCast using Expo and React Native, managed EAS builds and TestFlight distribution, and developed Next.js Super Admin workflows. Also developed and maintained the ForSure healthcare app and the Gogira education platform, delivering end-to-end features and optimizing API integrations.

Contributed to Sun Life's Digital Tool Modernization initiative, developing enterprise web applications. Built and maintained 100+ reusable web forms and frontend components, and developed BFF services and API integrations using Node.js, Lambda, and Express.

Developed Applete from Figma designs, implementing mobile screens, navigation flows, API integrations, and predictable application state.

Migrated the HAT mobile application from Ionic to React Native, modernizing architecture and improving performance. Rebuilt core mobile workflows, achieving a 35% improvement in screen loading times and a 30% reduction in redundant API requests.

Developed and maintained the Luna stock trading mobile application for Android and iOS, delivering production-ready features and integrating RESTful APIs. Improved application response times by 30% and reduced production bugs through integration testing.

Built and maintained scalable administration portals, reusable UI components, responsive dashboard workflows, and backend data integrations. Applied accessible component patterns and React performance optimization.

Bachelor of Science in Information Technology degree from the University of the East - Caloocan.