based in Barcelona, Sorsogon, Philippines.
Since 2015, I've been building for the web — custom Shopify themes and apps, full-stack sites, and mobile apps for clients around the world. Every project ships tested, polished, and ready to grow with your business.
JavaScript
Next.js
TanStack
Tailwind
shadcn/ui
Liquid
HydrogenShopify CLIApp BridgePolarisAdmin GraphQL APIReact RouterShopify FunctionsShopifyQLDev MCP ServerStorefront MCPDev DashboardWeb Pixels
Shopify Agents
Go
Python
Supabase
Postman
Docker
Coolify
Railway
Vercel
n8nMake
GitHub Actions
Flutter
Dart
Android Studio
Electron
Claude Code
Codex
GeminiOpenClaw
Antigravity
Figma
Photoshop
Illustrator
VS Code
GhosttyDelivering ongoing Shopify storefront development for True Color Wholesale, along with internal accounting tools and AI automation that streamlines order management.
Built and maintained custom Shopify apps for Nordlytica, including a Sweden-based Shopify store and a startup web application connecting sport teams with sponsorship opportunities, through recurring standups over a 15-month engagement.
Delivered web development work on the SocksRock project for Napo Ghonda, joining after a signed offer in November 2023 and wrapping up the engagement later that same year.
My longest-running engagement — bike builder tools, Bread Pay, and Klaviyo integrations for fezzari.com, carried through the 2024 rebrand to Ari Bikes and onto Shopify Plus.
Built Shopify storefronts for agency clients including Fyrn, Oak Furniture Superstore, and Tori Belle as part of Alex Espinoza's Aesymmetric team.
Teaching Application Development and Enterprise Application in the BS Information System program under the College of Information and Communication Technologies since August 10, 2020. Also build internal tools for the university, including a Document Tracking System and a campus library attendance monitoring system, and take part in extension work with partner agencies.
Built custom Shopify theme sections for hijoey to match specs the base theme didn't support, engineered a live necklace-engraving preview for Lara's jewelry product pages so shoppers could mock up names before buying, and migrated Equipt Media's WordPress sites over to Shopify — freelance work found through OnlineJobs.ph.
Taught Web Programming, C++ & Java Programming, Database Management, and Data Structures & Algorithms across multiple semesters, earning a Very Satisfactory performance rating.
A theme migration for True Color Wholesale — moved the storefront off an ageing, low-converting theme onto a more capable one built for the store's wholesale, mass-order nature rather than a typical single-item retail flow.
A custom bike builder for Ari Bikes — shoppers configure a bike part-by-part, add optional add-ons, and check out with installment payments through third-party processors Bread Pay and Truemed. My longest-running engagement, carried through the 2024 Fezzari-to-Ari rebrand onto Shopify Plus.
A custom cart page for Ari Bikes, built out from a Shopify free theme — surfaces every spec of the customer's build (frame, suspension, fit measurements) in one place, plus financing and leasing offers through Affirm and Bread Pay right at checkout.
A public Shopify app that brings Instagram-style stories to a storefront, so shops can sell through tappable video and customer-shot content instead of a static gallery. Built at Nordlytica and run on BoomButik.dk and showerlabs.dk.
A custom colour-swatch and size-picker built into the product grid for Marmalade Co., a Fruit of the Loom reseller storefront — shoppers preview variants straight from the collection page instead of opening each product. Built at Nordlytica for the client's Shopify store.
+63 956 933 5623
contact@jmgabrentina.com
Barcelona, Sorsogon, Philippines
1,088 contributions · Sep 10, 2025 – Sep 9, 2026
