Architecting a High-Performance PSGC REST API & Next.js Explorer for 42,000+ Barangays
How I designed a verified, staged quarterly data pipeline and interactive explorer for the Philippine Standard Geographic Code (PSA PSGC).
Showcasing impactful software applications and open-source systems.
Professional journey, career timeline, and educational background.
Open-source projects, tools, and technical resources.
Public REST API & interactive dashboard for the Philippine Standard Geographic Code (42,000+ barangays, 1,493 municipalities).
rbillyjames0221
Local-first visual database architecture studio with interactive ERD canvas, Dagre auto-layout, and Prisma/SQL sync.
rbillyjames0221
Mobile-first live transcription & digital stenography PWA tailored for Philippine court hearings with crash-safe IndexedDB audio.
rbillyjames0221
Articles and notes on full-stack development, database architecture, and applied AI.
Technical competencies, programming languages, and tools.
Build high-performance full-stack web applications with App Router, server actions, and SSR.
Develop type-safe, maintainable, and scalable enterprise applications with strict static typing.
Craft reactive and intuitive user interfaces using modern hooks, state management, and reusable components.
Implement backend services, AI data pipelines, RAG ingestion scripts, and Flask applications.
Build production RAG pipelines, semantic document chunking, embeddings, and context-grounded AI chat systems.
Engineer fast and scalable server-side APIs, microservices, and asynchronous event-driven backends.