About

Senior Full-Stack Engineer, Architect, and IT Consultant with 15+ years of continuous professional experience across US, UK, and Philippine markets.

Professional Summary

Currently engaged at CHMF as IT Consultant & Senior Full-Stack Developer (Django + PostgreSQL). Has built and published Chrome extensions to the Chrome Web Store (ReplayHub Looper, Content Guard — both live, public users), deployed a live multi-tenant AI-powered SaaS product with real per-user accounts (SmartResume), financial dashboards (TCG Arbitrage Explorer), stock analysis tools (PSE Stock Compass), and content automation tools (Only10).

Has also shipped a production multi-site deployment platform (personal portfolio site, Shoshin Systems agency site, and this recruiter-first CV site) live on custom domains, built on a path-filtered multi-site GitHub Actions CI/CD pipeline, and production applications on Supabase whose entire authorization model is enforced by Postgres Row Level Security with no application-layer permission checks — including a PWA (PoopLog) verified against the live database and hardened through a structured pre-launch security audit, and a reusable single-tenant RAG application (DOCUMENT·RAG — React SPA + Supabase with pgvector, Auth, Storage, and Deno Edge Functions) deployed end to end with the vector-chunk table given no client access at all. Also ships full framework applications outside the CI pipeline — a Laravel 12 daily-devotional PWA (Selah) deployed to commodity shared hosting with server-rendered auth, email verification, a relational MySQL model, an admin CRUD area, and a 365-entry content system, hardened through the same structured pre-launch audit. Core identity: pragmatic backend engineer and system architect with deep enterprise experience, rare legacy system integration skills (QuickBooks Desktop + Python), production Stripe billing, healthcare system architecture, a growing AI-engineering profile (RAG, embeddings, agentic pipelines, MCP servers), and proven CI/CD pipeline architecture and DevOps troubleshooting.

Work History

June 2026 – September 2026 · Quezon City, Philippines (Hybrid)

IT Consultant & Senior Full-Stack Developer — CHMF

Python, Django, PostgreSQL, jQuery, AJAX, RESTful APIs

  • Architected an enterprise in-house healthcare management system for a cooperative HMO federation
  • Solved a legacy 32-bit QuickBooks Desktop + Python integration via the QODBC driver
  • Implemented the Service Object Pattern with double-entry accounting validation and atomic transactions
  • Designed a Draft → Approved state machine with idempotency keys for financial records
July 2023 – June 2026 · Atlanta, Georgia, US (Remote)

Senior Ruby on Rails Developer — ChartRequest

Healthcare SaaS / Medical Records

  • Implemented production Stripe P2P subscription billing and a retrieval-fee mandate, creating new revenue streams
  • Built bulk cheque PDF generation and enterprise analytics dashboards
  • Developed custodian bulk upload with Excel parsing, validation, and MySQL schema optimization
  • Reduced SIGTERM errors and optimized error reporting to improve system stability
  • Worked within a HIPAA-regulated healthcare SaaS platform, staying within PHI-handling compliance constraints across billing and subscription features
July 2013 – July 2023 (10 years) · London, United Kingdom (Remote)

Senior Ruby on Rails Developer — LaunchPad Recruits / Harver

HR Tech / Video Interviewing SaaS

  • Led the monolith-to-JSON-API migration, decoupling the legacy platform for modern frontend and integrations
  • Built Elasticsearch + Kibana enterprise search and analytics, decreasing query latency
  • Integrated AI-driven candidate suggestions to assist employer evaluation workflows
  • Designed and maintained enterprise-scale MySQL architecture across a decade of platform growth
  • Delivered SMS/notification reminders via Twilio and coordinated day-to-day remote team communication via Slack
September 2012 – June 2013 · Makati, Philippines

Senior Ruby on Rails Developer — Ripplewave Inc.

History Channel Asia Ultimate Quiz (single/multiplayer/league), Ayala Corporation marketing platforms

January 2011 – November 2012 · Makati, Philippines

Ruby on Rails Developer — Rivereo / Magenic

International client marketing websites, Facebook apps, Jack Link's

October 2007 – January 2011 · Makati, Philippines

Ruby on Rails Developer — Brewed Concepts

DTI SMS raffle (government), BCDA website (government), Tubbataha Reefs, Pantene/Kris Aquino campaigns

Certifications