Jason Dumangas

I’m a Shopify Developer with 5 years of experience building, customizing, optimizing, and maintaining eCommerce websites for businesses and online brands.
My expertise includes Shopify theme development, Liquid, HTML, CSS, JavaScript, product page optimization, Shopify apps, integrations, store setup, responsive design, SEO basics, and website performance improvement. I also have experience with Shopify Plus, Matrixify, product data management, collections, variants, metafields, and bulk catalog updates.
I help businesses create clean, mobile-friendly, and conversion-focused Shopify stores that are easy to manage and built for growth. I enjoy solving technical issues, improving user experience, and supporting online stores through reliable development and ongoing maintenance.
I’m also experienced with tools such as WordPress/WooCommerce, PageFly, GemPages, Klaviyo, Recharge, GA4, GTM, Meta Pixel, PayMongo, Xendit, and PayPal.
I’m open to remote Shopify development opportunities, freelance projects, contract roles, and long-term eCommerce support.