About

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

Professional Summary

Has built and published Chrome extensions to the Chrome Web Store (ReplayHub Looper, Content Guard, both live, public users) and deployed a live multi-tenant resume-builder SaaS with real per-user accounts (SmartResume). Has also built, but not deployed, a financial dashboard (TCG Arbitrage Explorer), a stock analysis tool (PSE Stock Compass) and a content automation tool (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 – Present · 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