Case Studies
Six systems I built for Philippine businesses and schools, plus a few side projects and older experiments.
01Production Systems
Motorcycle Ride-Hailing PlatformPassenger and driver apps with fare negotiation, live trips, and a full metrics and alerting stack.2026 NestJS, Expo, Next.js
College Registrar Document SystemA legacy PHP registrar rewritten with public request tracking and multi-step clearance workflows.2026 Laravel, Vue, Inertia
Hospitality Department InventoryBorrow, return and sales tracking with barcode scanning and good, damaged and lost accounting.2026 Next.js, NestJS, PostgreSQL
Appliance Retailer Desktop POSOffline cash and installment sales with a penalty engine, undoable Excel import and backups.2026 Tauri, React, Rust
ParkLocatorMall parking reservations for Cebu with PostGIS search and lock-safe booking across three apps.2025 Flutter, Dart, NestJS
Service-Business ERPJob orders, quotations, inventory and roles with idempotent stock deduction and PDF quotes.2026 Angular, Node.js, Express02Side Projects
2025Inventory Management SystemDesktop inventory application built with Tauri, React, and SQLite for canteen and retail businesses.Tauri, React, TypeScript2024Invoicing ApplicationFull-stack invoicing platform with .NET backend, Angular frontend, AI-powered queries, and PDF export..NET, C#, Angular2026Smart PomodoroCalendar-aware focus planner that reads Google Calendar blocks and turns them into app-local focus sessions.Next.js, React, NestJS2025GatifySelf-hosted API gateway with intelligent rate limiting, real-time analytics, and zero vendor lock-in.Go, Redis, TimescaleDB
03Archive
2024ChefyAI-powered recipe generator that creates personalized meals from your available ingredients.React, TypeScript, Tailwind CSS2025ASL RecognizerReal-time ASL fingerspelling recognizer using MediaPipe + TensorFlow for 24 static letters.Python, TensorFlow, MediaPipe2024Portfolio v1First-generation portfolio website focused on clean UI, responsive layouts, and project storytelling.Next.js, React, TypeScript