REACT

NATIVE

DEVELOPER.

Built a cross-platform home workout and fitness planning app in Flutter with personalized workout programs and progress tracking.

• Built a cross-platform fitness app in Flutter with 900+ exercises and HD video demonstrations for proper form guidance
• Implemented a personalized training plan engine that adapts workout routines based on fitness level, goals, and available time
• Developed a custom workout builder allowing users to assemble routines from the full exercise library
• Integrated offline mode with local storage so users can download and run workouts without an internet connection
• Added a voice coach layer that delivers real-time audio cues during live workout sessions, keeping users focused on form
• Built freemium subscription handling with premium access gates for advanced workouts and in-depth training plans

Developed a React Native parenting resource app connecting Filipino parents to child development content and community tools.

• Built an AI-powered React Native app for Save the Children Philippines promoting positive parenting among Filipino caregivers
• Integrated a three-component platform - mobile app, online courses, and omni-channel hub - into a unified mobile experience
• Implemented an AI-driven content engine delivering personalized parenting tips, articles, and videos based on child development stages
• Connected Firebase for real-time data and push notifications to keep parents engaged with daily parenting guidance
• Contributed to a platform aimed at reducing violent discipline against children by equipping parents with knowledge and community support

Built a React Native online grocery shopping app for one of Indonesia's largest supermarket chains, featuring real-time inventory and seamless checkout.

• Developed a full-featured grocery e-commerce app for Hypermart supporting Express, Next Day, and Park & Pick Up delivery modes
• Integrated multiple payment methods including Credit/Debit card, E-Payment wallets, and QRIS via a unified payment gateway
• Built a product search and barcode/QR scanner feature using the device camera for instant product lookup in-store and online
• Implemented a monthly shopping list feature allowing users to save and reorder frequently purchased products
• Surfaced active promotions dynamically on the home screen to drive engagement and conversion

Built a React Native POS, inventory, and mobile load selling app for Filipino micro-entrepreneurs and sari-sari store owners.

• Built an offline-first POS app for Filipino micro-businesses with local SQLite storage and automatic cloud sync when online
• Integrated Bluetooth peripheral support for receipt printers, barcode scanners, and cash drawers via BLE
• Implemented e-load and bills payment features allowing store owners to generate extra income for their customers
• Developed comprehensive reporting covering sales, expenses, inventory, cash ledger, and credit ledger in a single dashboard
• Added invoice and receipt generation with custom branding so small business owners can present professional documents to clients

Developed a React Native last-mile logistics driver app with real-time delivery tracking and order management for Philippine couriers.

• Built a driver-facing delivery management app for Mober with real-time GPS tracking and live route updates
• Implemented geo-zoning logic to define and enforce driver service areas, filtering assignments based on current location
• Developed multi-stop delivery scheduling with optimized routing to minimize travel time across multiple simultaneous jobs
• Integrated push notifications for real-time job assignment alerts, pickup confirmations, and delivery status updates
• Designed the delivery state machine covering job acceptance, en-route, pickup, in-transit, and completion flows

Contracted to develop a React Native digital physical therapy platform enabling remote patient monitoring and guided exercise programs.

• Developed a PIP diabetes healthcare app solely from scratch to product launch, impacting 800,000+ users, built with React and TypeScript
• Used React Native, React Native for Web, and TypeScript to build an iPad application later extended to web and Android tablet support
• Implemented a proof of concept with trending technologies including flowchart-based UIs to spearhead next-generation healthcare software
• Built multiple cross-platform healthcare applications enabling data-driven insights for patients, doctors, and administrators leveraging AI and ML

Contracted to build a React Native DeFi portfolio app integrating multiple blockchain protocols and wallet management features.

• Built a custom dynamic search UI using React Native Reanimated with real-time touch feedback tailored to user interests
• Developed an article viewer that renders raw HTML natively in a modal, tracking viewed items and surfacing fresh content daily
• Implemented GraphQL and REST APIs for secure back-end interaction, tested across Expo Go and Expo Bare Workflow
• Delivered a video viewer similar to Instagram Stories, allowing users to navigate forward and backward through personalized content