Sardar U.
Shopify & BigCommerce Expert | Liquid, Stencil Developer | API & CRO
⭐ 7+ Years Experience | Top Rated | Shopify & BigCommerce Specialist | Custom eCommerce Solutions Your eCommerce store should do more than look good. It should load fast, work flawlessly, and turn visitors into paying customers. I am a Shopify and BigCommerce developer with 7+ years of experience building, customizing, and optimizing eCommerce stores for businesses in the US, UK, EU, and Australia. From custom Shopify themes and BigCommerce Stencil development to complex API integrations and complete store migrations, I build solutions around your business requirements, not just standard templates. My expertise includes Shopify Liquid, BigCommerce Stencil, custom apps, API integrations, checkout features, speed optimization, CRO, ERP/CRM integrations, migrations, and maintenance. ➤ Shopify Development ➤ Custom Shopify store development ➤ Theme design and customization ➤ Shopify Liquid, HTML, CSS, and JavaScript ➤ Online Store 2.0 sections and reusable blocks ➤ Custom product pages and storefront features ➤ App integrations and custom functionality ➤ Store redesign, migration, and speed optimization ➤ Product page optimization and conversion rate optimization ➤ BigCommerce Development ➤ Custom BigCommerce store development ➤ Stencil theme development and customization ➤ Product, category, cart, and checkout features ➤ REST API and GraphQL integrations ➤ Custom apps and third-party integrations ➤ B2B catalogs, customer groups, and pricing functionality ➤ Store migrations, redesigns, and bug fixes ➤ Performance optimization and technical troubleshooting ➤ Custom eCommerce Solutions ➤ Features beyond standard themes and apps ➤ Customer portals and account dashboards ➤ Custom checkout and delivery-date functionality ➤ ERP, CRM, and inventory system integrations ➤ Automated product, order, and customer synchronization ➤ Payment gateways and third-party software integrations ➤ Custom reporting dashboards and business workflows ➤ Optimization and Support ➤ Shopify and BigCommerce speed optimization ➤ Core Web Vitals and mobile performance improvements ➤ Storefront bugs, broken layouts, and functionality fixes ➤ Product page and checkout improvements ➤ Technical SEO and performance audits ➤ API and integration troubleshooting ➤ Migration and data transfer support ➤ Ongoing maintenance and post-launch support ➤ Projects I Can Work On I work with fashion, beauty, wellness, electronics, furniture, automotive, retail, and B2B wholesale businesses on storefronts, checkout, APIs, inventory, and performance. ➤ MaxiSci: Custom checkout delivery-date calendar with cutoff times and holiday handling https://maxisci ➤ MegaHandles: Custom cart-sharing functionality through email https://megahandles ➤ BB Vitamins: BigCommerce Stencil storefront development and customization https://bbvitamins ➤ Wicked Cookies: Shopify customization https://wickedcookies ➤ Panel Screens: BigCommerce development and storefront customization https://panelscreens uk/ ➤ Why Clients Choose Me ➤ 7+ years of Shopify and BigCommerce development experience ➤ Specialized knowledge of Liquid and Stencil ➤ Experience with custom features and API integrations ➤ Focus on speed, usability, and conversions ➤ Clean, maintainable code instead of quick fixes ➤ Clear communication and realistic timelines ➤ Testing across desktop and mobile ➤ Post-launch technical support ➤ Tools and Technologies Shopify, Shopify Liquid, Online Store 2.0, BigCommerce, Stencil Framework, JavaScript, React.js, Node.js, PHP, HTML5, CSS3, MySQL, REST APIs, GraphQL, AJAX, Git, WordPress, WooCommerce, payment gateways, inventory systems, and third-party eCommerce applications. I review your existing store, clarify the goal, recommend a practical approach, and test changes across desktop and mobile before delivery. Whether you need a small fix or a larger feature, I focus on reliable functionality and a smoother customer journey. Clear scope, updates, testing. Need a Shopify Developer or BigCommerce Expert for customization, bug fixes, performance, or custom features? Send me a message. 📩 Let's discuss your requirements and build a fast, scalable, user-friendly, and conversion-focused eCommerce store. Shopify Developer, Shopify Expert, BigCommerce Developer, BigCommerce Expert, Shopify Liquid Developer, BigCommerce Stencil Developer, Shopify Theme Customization, BigCommerce Theme Customization, Shopify Store Development, BigCommerce Store Development, Shopify App Integration, BigCommerce API Integration, Shopify Speed Optimization, BigCommerce Speed Optimization, Shopify CRO, eCommerce Developer, Custom eCommerce Development, Shopify Migration Expert, BigCommerce Migration Specialist, Checkout Customization, REST API Integration, GraphQL Developer, ERP Integration, CRM Integration, Inventory Management Integration, B2B eCommerce Development, Product Page Optimization, Conversion Rate Optimization, Website Performance Optimization.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $1.4k
Billed in all: $15,293$15k
$340 in the last 6 months
Across 40 contracts
Earnings, last 30 days
Skill rankings: Top 15% in Functional Programming
Ranked by MRR among everyone on Upwork with the skill.
- #11Functional Programming74 freelancers · 🇵🇰 #4Top 15%🇵🇰#4 of 10
- #19Web Development Plugin73 freelancers · 🇵🇰 #4Top 26%🇵🇰#4 of 23
- #24Stencil52 freelancers · 🇵🇰 #6Top 46%🇵🇰#6 of 9
- #231BigCommerce827 freelancers · 🇵🇰 #37Top 28%🇵🇰#37 of 122
- #293Bug Fix1,157 freelancers · 🇵🇰 #79Top 25%🇵🇰#79 of 346
- #558Custom Web Design1,745 freelancers · 🇵🇰 #139Top 32%🇵🇰#139 of 470
- #680Liquid1,844 freelancers · 🇵🇰 #144Top 37%🇵🇰#144 of 452
- #726GraphQL3,403 freelancers · 🇵🇰 #159Top 21%🇵🇰#159 of 689