Full-Stack & Shopify Developer specializing in Liquid, Vanilla JS, and Performance Optimization.
Mahafuzul Haque (MH Forhad) is a Senior Shopify Developer and Full-Stack Engineer specializing in high-performance theme optimization and robust e-commerce architecture. Operating under Systemdevify, he bridges the gap between complex Liquid logic and Google Core Web Vitals, building lightweight, fast-loading storefronts by utilizing native Web APIs first and cleanly integrating modern dependencies when they offer a faster, more efficient solution.
Guided by a pragmatic software development philosophy, he avoids unnecessary overhead by using what is available natively before scaling up to battle-tested frameworks as project needs evolve. Backed by extensive agency experience, he excels at untangling complex technical debt, debugging deep AJAX drawer cart errors, and streamlining rendering performance.
Custom theme sections, Liquid logic, Dawn framework, schema setup, and app integration.
AJAX operations, cart drawers, dynamic variant selection, and native DOM manipulation.
Lighthouse audits, render-blocking asset removal, and Core Web Vitals optimization.
HTML5, CSS3, responsive UI/UX execution, cross-browser debugging, and web architecture.
Standard Shopify templates often suffer from severe First Contentful Paint (FCP) and Largest Contentful Paint (LCP) delays due to poorly sequenced stylesheets, render-blocking scripts, and excessive third-party tracking tags. My speed optimization process systematically audits and reorganizes the HTML <head> asset sequence, minifies critical CSS, defers non-critical JavaScript, and runs deep performance passes on the Dawn Framework to maximize mobile performance scores on PageSpeed Insights.
Resolution of layout bugs, text updates, broken responsive sections, and display errors within 24–48 hours.
Debugging AJAX drawer carts, variant selectors, liquid rendering errors, and app conflicts.
Theme optimization sprint to improve Lighthouse scores, eliminate slow code, and increase load speed.
To ensure continuous business operations, all development and optimization sprints are executed on isolated staging themes using a zero-downtime staging protocol. This safe deployment workflow allows merchants to preview live progress on password-protected duplicate themes and authorize changes before any code is cleanly merged into the primary live theme.
Need a fast bug fix or a theme technical sprint? Reach out directly via any platform below: