EN Rex George
Lead Software Engineer · Systems Builder · Web & Mobile Application Developer
Great software should be a catalyst for value, not a source of complexity. My approach is rooted in strong engineering discipline ensuring that every system is as scalable as it is reliable.
Core stack: TypeScript, React, Next.js, Flutter, Dart, Python, Firebase, Supabase, PostgreSQL, SQL, Resend, Cloudflare, bunny.net
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About Me
Software Engineer | Web, Mobile, and Systems
In a world of digital noise, software should solve real problems and create meaningful outcomes. My approach is rooted in systems thinking and clean architecture disciplines that turn raw code into reliable, scalable infrastructure. I design and deliver the web and mobile applications that make those outcomes possible, where every feature is intentional, every system is built to last, and every product quietly does what it was meant to do: work seamlessly for the people who rely on it.
Beyond the build, I see software as a long term responsibility. It's not just about shipping features, but about shaping experiences that endure, systems that can evolve, adapt, and remain clear even as complexity grows. I value clarity over cleverness, consistency over shortcuts, and purpose over noise, ensuring that what we create today continues to make sense tomorrow.
- 20+ Apps Built
- 5+ Happy Clients
- 4+ Years Experience
- 1500+ Cups of Coffee
Experience
Co-Founder & CTO — GeoTech
Metro Cebu · Hybrid · Feb 2026 - Present ·
- Co-founded GeoTech and lead its technical direction as CTO, owning the architecture, engineering standards, and product roadmap.
- Building and leading the engineering effort across web and mobile, setting up the stack, infrastructure, and delivery practices from the ground up.
- Driving project management and team leadership, coordinating priorities across a lean, cross-functional team to ship reliably.
- Translating product strategy into scalable, maintainable systems using clean architecture and modern full-stack tooling.
Technologies: Project Management, Leadership, System Architecture, Full-Stack Development, Product Strategy
Founder — PASUGO
Buug, Zamboanga Sibugay · Remote · Jan 2026 - Present ·
- Founded PASUGO, a hyper-local food and goods delivery service for Buug, Zamboanga Sibugay, owning both the product direction and the entire technical stack.
- Built and shipped the Flutter app serving three distinct roles — customers, riders, and merchants — to the App Store and Google Play, using Clean Architecture and the BLoC pattern.
- Designed the backend on Supabase (Postgres, RLS, Auth, Storage) and led the migration off Firebase, keeping the mobile app and admin console on a single shared schema.
- Built the React admin operations console covering orders, dispatch, wallets, commissions, and analytics, plus the Next.js marketing site.
- Ran the launch end to end: store listings, merchant and rider onboarding in town, and day-to-day operational support.
Technologies: Founding & Product Strategy, Flutter, BLoC, Clean Architecture, Supabase, PostgreSQL, React, Next.js, Engineering Leadership
Head of Tech Department — UA - Underground Apparel
Metro Cebu · Hybrid · Sep 2025 - Jul 2026 · 11 mos
Head of Tech Department
Feb 2026 - Jul 2026 · 6 mos
- Leading the technology department, setting technical direction and engineering standards across mobile, web, and internal systems.
- Managing and mentoring the engineering team while owning delivery, code quality, and architecture decisions.
- Driving the product and platform roadmap, from the e-commerce app to the tools and infrastructure that support it.
- Partnering with leadership on technical strategy, hiring, and scaling the tech organization.
Technologies: Engineering Leadership, Team Management, System Architecture, Product Strategy, E-Commerce, Delivery
App Developer
Sep 2025 - Feb 2026 · 6 mos
- Spearheaded the mobile application development for iOS and Android.
- Implemented Clean Architecture, the BLoC pattern, and Test-Driven Development (TDD) to build a scalable and robust codebase from the ground up.
- Laid the groundwork for core e-commerce functionality, integrating the Shopify API for product catalogs, order processing, and user authentication.
- Collaborated with the Chief Data Officer during planning and design to ensure a seamless, high-quality user experience.
Technologies: Mobile Application Development, E-Commerce, Clean Architecture, BLoC, TDD, Shopify API, iOS, Android
Mobile App Developer — CQ Business Management Software
London, England · Remote · Sep 2025 - Present ·
- Maintain and evolve key features for a live, cross-platform mobile application, strictly adhering to Clean Architecture and leveraging the BLoC/Cubit state management pattern.
- Integrate and optimize connectivity with backend services via RESTful APIs, managing data flow, and utilizing dependency injection for robust system communication.
- Ensure high code quality and efficiency across the codebase using modern tooling like Freezed (for immutable models) and Json Serializable (for data parsing).
- Collaborate effectively with a distributed, international team (Philippines and UK), utilizing a flexible schedule to align on project deliverables and business hours.
Technologies: Mobile Application Development, Clean Architecture, BLoC, Cubit, RESTful APIs, Freezed, Json Serializable, Cross-platform
Mobile Application Developer — Agile Business Technologies
Cordova, Cebu · On-site · Jul 2023 - Sep 2025 · 2 yrs 3 mos
- Functioned as the sole developer responsible for the entire lifecycle of the application, from initial design and development to continuous maintenance and updates.
- Designing and developing robust mobile application using Flutter, ensuring adherence to Clean Architecture principles for enhanced maintainability and scalability.
- Implementing the BLoC (Business Logic Component) pattern to separate business logic from the UI, resulting in a well-organized and highly testable codebase.
- Practicing Test Driven Development (TDD) to create comprehensive unit and widget tests, achieving a stable and reliable application with significantly increased test coverage.
- Creating responsive and intuitive user interfaces with Flutter widgets, maintaining a strong focus on UX design principles to enhance user satisfaction and engagement.
Technologies: Mobile Application Development, Flutter, Dart, Mobile Applications, Test-Driven Development, Business Logic, Engineering, Clean Architecture Structure, Cross-functional Team Leadership, Leadership
Artificial Intelligence Trainer — Outlier
Remote · Freelance · Sep 2024 - Present · 1 yr
- My role involves creating prompts and ensuring that they are detailed, specific and relevant to guide the AI toward a useful response.
- Quality checking, tracing the factuality of responses, and analyzing the efficiency of the codes used by the AI, to ensure accuracy, optimal performance, and understanding of the reasoning process.
- Guiding AI models through various projects, tackling diverse and complex coding problems, and ensuring continuous learning and improvement.
- Analyzing and interpreting model performance to identify training deficiencies and opportunities for improvement from multiple modalities, including images, audio, or video.
Technologies: AI Prompting, Prompt Engineering, Multimodal Prompting
Freelancer — Upwork
Cebu, Central Visayas, Philippines · Remote · Aug 2022 - Jan 2024 · 1 yr 6 mos
- Developed Flutter mobile applications for various clients with focus on clean code and user experience.
- Collaborated with international clients to deliver high-quality mobile solutions.
- Maintained consistent communication and project management throughout development cycles.
Technologies: Flutter, Dart
Web Developer Intern — Sun Asterisk Philippines
Cebu, Central Visayas, Philippines · Remote · Jul 2022 - Aug 2022 · 2 mos
- Gained hands-on experience in web development using modern frameworks and technologies.
- Participated in team projects and learned industry best practices for software development.
- Developed skills in version control, project management, and collaborative development.
- Completed training in full-stack development methodologies and agile practices.
Technologies: Django, Git, Agile Project Management, Asana, MySQL, ReactJs, Test Automation, Python (Programming Language), Web Development
Featured Projects
A selection of product builds where I led and handled the architecture, implementation, and delivery — applying software engineering principles to real-world use cases.
PASUGO — Food & Goods Delivery App
The hyper-local food and goods delivery platform I founded for Buug, Zamboanga Sibugay — a Flutter app serving customers, riders, and merchants, backed by an admin operations console and marketing site. Live on iOS & Android.
- Browse Buug stores, menus & cart checkout
- Live order tracking with rider on map
- In-app chat with your rider through every delivery
- Merchant dashboard: menu, hours, orders & payouts
- Rider dispatch queue, navigation & earnings
- Admin console: orders, wallets, commissions & analytics
Technologies: Flutter, BLoC, Supabase, PostgreSQL, React, Next.js
Live site · App Store · Google Play
UA — Underground Apparel App
The official mobile e-commerce app for Underground Apparel, a Cebu-based streetwear brand — curated drops, immersive browsing, and secure checkout.
- Curated collections, categories & product search
- Cart with sizes, discount codes & delivery notes
- Secure checkout with PayMongo payments
- Wishlist, reviews & order tracking
- Collector rewards & push notifications
- Biometric login & profile
Technologies: Flutter, Dart, BLoC, GraphQL, Firebase, PayMongo
App Store · Google Play
Joseph Sabello — Video Platform App
A subscription-based personal video platform for creator Joseph Sabello (Ungart) — a Flutter app and marketing site delivering weekly premium episodes. Live on iOS & Android.
- Video catalog with featured carousel & search
- In-app player with resume-watch progress
- Subscriptions & in-app purchases for premium
- AI mood-based recommendations (Gemini)
- Comments, favorites & watch-later
- Companion marketing website
Technologies: Flutter, Firebase, Cloudflare Stream, In-App Purchase, Next.js, Gemini AI
App Store · Google Play
CQ Mobile — Field Service App
The cross-platform mobile companion for CQ (Custom Quoter) business management — a field-service app where technicians run jobs, schedules, timesheets, and client assets on the go. Live in production (UK).
- Job management with tasks, checklists & work status
- Clock in/out timesheets & attendance (offline-capable)
- Scheduling, leave requests & reminders
- Client assets & equipment management
- Real-time chat via Socket.IO with offline outbox
- Google Maps route optimization & push notifications
Technologies: Flutter, BLoC, Freezed, Dio / Retrofit, Drift (offline), Socket.IO
App Store · Google Play
Joseph Sabello — Website
The official marketing website for creator Joseph Sabello (Ungart) — a cinematic, motion-driven site introducing the brand, its story, and the app.
- Animated hero & brand storytelling
- Story, vision & contact pages
- App landing with iPhone screenshot carousel
- Custom cursor & scroll animations
- SEO, OpenGraph & dynamic sitemap
- Responsive, fast static delivery
Technologies: Next.js, React, TypeScript, Tailwind CSS, Framer Motion
Live site
SYNK Dance Studio — Website
The marketing website for SYNK Dance Studio in Cebu — an animated, motion-driven brand experience built around presence and being “in synk.”
- Animated hero with signature motion
- Brand & vision storytelling sections
- Performer testimonials
- Media & branding gallery
- Custom cursor & smooth scrolling
- PWA, SEO & analytics
Technologies: Next.js, React, TypeScript, Tailwind CSS, Framer Motion
Live site
SYNK Dance Studio — Booking Portal
A full booking & studio-management portal for SYNK — members book classes and rent the floor while admins run the schedule, payments, and people.
- Class schedule browsing & booking
- QR digital membership card & check-in
- QR payments with receipt verification
- Floor rentals: request → quote → pay → verify
- Admin analytics: revenue, members, peak heatmap
- Role-based access with realtime RLS
Technologies: Next.js, Supabase, TypeScript, Tailwind CSS, Recharts
Live site
GINA - Period Tracker and Appointment App
A comprehensive mobile application connecting patients with gynecologists, fostering a community for women's health, and streamlining administrative oversight.
- Patient appointment booking & management
- Doctor schedule management & e-consultations
- Period tracker & cycle history
- Community forums for health discussions
- Admin dashboard for user verification
- Multi-role authentication system
Technologies: Flutter, Firebase, BLoC, Cloud Firestore, Get It
Source
Merkado - Agricultural Marketplace
A comprehensive digital marketplace connecting Customers, Farmers, and Agricultural Organizations with real-time chat, location services, and order management.
- Multi-role platform (Admin, Customer, Farmer, Organization)
- Real-time chat communication system
- Location-based seller discovery with maps
- Order management with status tracking
- Sales dashboard and analytics
- Product management with promotional discounts
Technologies: Flutter, Firebase, Google Maps, Real-time Chat, Location Services
Source
GaBus - Bus Booking System
An intelligent, real-time bus booking and management platform with live tracking, seat selection, and multi-role support for passengers, drivers, and admins.
- Real-time bus tracking & location sharing
- Terminal & on-the-road booking options
- Interactive seat selection system
- In-app wallet for cashless payments
- Driver earnings dashboard
- Fleet management for administrators
Technologies: Flutter, Firebase, Google Maps, Provider, Geolocator
Source
FundTrackr - Personal Finance App
A personalized finance tracking application designed to empower users in managing their finances with precision, budgeting tools, and expense tracking.
- Personalized expense tracking
- Budget management & planning
- Financial analytics & reports
- Category-based expense organization
- Goal setting & progress tracking
- Data visualization with charts
Technologies: Flutter, SQLite, Provider, Charts, Local Storage
Source
Skills & Technologies
A full-stack toolkit spanning mobile, web, and the services behind them — with a strong focus on clean architecture, reliability, and maintainable delivery.
Mobile Engineering
- Flutter
- Dart
- BLoC / Cubit
- Freezed & JSON Serializable
- REST APIs
Web & Full-Stack
- TypeScript
- React
- Next.js
- Tailwind CSS
- Python
Backend & Data
- Supabase
- PostgreSQL
- SQL
- Firebase / Firestore
- SQLite
Cloud & Services
- Cloudflare
- bunny.net
- Resend
- Vercel
Engineering Practices
- Clean Architecture
- Test-Driven Development (TDD)
- System Architecture
- Dependency Injection
- Scalability & Maintainability
Frameworks & Libraries
TypeScript, React, Next.js, Flutter, Dart, Python, Firebase, Supabase, PostgreSQL, Cloudflare, bunny.net, Resend, Vercel, BLoC, Cubit, Clean Architecture, REST APIs, Freezed, Get It (DI), Dio, SQLite, Tailwind CSS