Muhammad Junaid A.

BigCommerce developer and Shopify Developer with 18 years of experience, 254 Upwork jobs 6,300+ hours and a 100% Job Success Score on Upwork. I help eCommerce businesses to solve problems that stop their stores from growing. Which mean fixing a slow or outdated theme building custom functionality. improving conversion rates correcting inaccurate tracking or automating time-consuming processes. My work goes beyond development. I try to understand your business your customers and why visitors may be leaving without making a purchase. I can help you with: • BigCommerce development and Stencil theme customization • BigCommerce Catalyst and legacy theme upgrades • Shopify and Shopify Plus development • Custom Shopify apps and integrations • Store migrations and platform upgrades • Custom APIs, checkout, shipping, and payment integrations • Liquid, Stencil, React, Node.js, and PHP development • Conversion rate optimization and UX improvements • Meta Conversion API and server-side tracking • Google Ads, GA4, and Google Tag Manager • Klaviyo email and revenue automation • Technical SEO, performance, and accessibility • Custom dashboards and backend systems • Store audits, troubleshooting, and ongoing support My Upwork profile feedback includes long-term Shopify Plus projects BigCommerce theme development API integrations migrations, custom checkout functionality and urgent conversion problems. Clients like my communication reliability attention to detail and ability to understand the business behind the technical work. Many continue working with me on repeat and long-term projects. If your store is getting traffic but not enough sales I’ll help you find out why. If store is already performing good, I’ll help you make it faster, smarter easier to manage and more profitable. BigCommerce Developer | BigCommerce Stencil Developer | BigCommerce Web Design | BigCommerce Web developer | BigCommerce Apps Development | Professional BigCommerce Developer | Shopify Developer | Shopify Web developer | Shopify store development | Shopify web designer | Shopify theme designer | Shopify Migraiton #bigcommerce#bigcommerceDeveloper##BigCommerceStencilDeveloperBigCommerceWebDesigner#shopifyDeveloper#ShopifyWebDeveloper#ShopifyStoreDevelopment#ShopifyWebDesigner#ShopifyThemeDesigner#ShopifyMigration