// Hi, my name is

John Jeffrey Jamen.

Shopify App & Theme Developer with 10+ years across e-commerce and technical support. Custom apps with Remix, Polaris & GraphQL · storefronts in Liquid · merchant-first thinking.

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01. About me

I'm a developer based in Manila, Philippines, focused on the Shopify ecosystem. My path started in technical support — diagnosing networks at Comcast, mediating cases at Airbnb, mentoring agents at Amazon — and that decade of solving real customer problems shapes how I build software today.

At Shopify, I worked as a Technical Merchant Specialist debugging stores, apps, themes, and payment systems. Now I build the other side: custom Shopify apps with Node.js, React, and the Shopify API stack, plus theme customizations in Liquid, HTML, CSS, and JavaScript.

I care about performance, maintainable code, and clear documentation — and I'm at my best bridging the gap between merchants, designers, and engineering teams.

// quick facts

  • LocationManila, PH
  • FocusShopify Apps & Themes
  • Experience10+ years tech
  • EducationBS ECE, Rizal Tech U
  • LanguagesEnglish, Tagalog
  • Sitejamen.cloud

02. Skills and Experience

Remote Staff
Katie's Buckles
Shopify
Amazon
Frontier Fiber
Airbnb
Comcast Xfinity
Epik Workwear

06. Contact

Let's build something.

I'm open to Shopify development work — apps, themes, or merchant support. My inbox is always open.

hello@omsim.ioLinkedInjamen.cloud