Hire the Best Shopify Developers in Kolkata, IN

Most websites look good… but fail to convert visitors into customers. I focus on building WordPress and Shopify websites that actually perform. Over the years, I’ve worked on multiple projects where the goal wasn’t just development — it was improving user experience, performance, and overall conversion. I help businesses build websites that are structured correctly from day one, so they don’t face scalability or usability issues later. My work usually involves: – WordPress website development (Elementor, custom builds) – Shopify store setup and customization – Webflow website design and development – Website redesign and performance optimization – Improving user flow and conversion I usually work with: – Startups launching new products – D2C and e-commerce brands – Businesses looking to improve their existing website performance My approach is simple: Understand your business goal Structure the website for performance and scalability Execute clean, reliable development I prefer working with clients who are serious about building something that performs long term. If you already have a clear idea or need help structuring it properly, feel free to reach out — happy to discuss.

🏆 Top-Rated WordPress & Shopify Developer With 15+ years of hands-on development experience and 500+ successfully delivered projects, I specialize in building high-performance WordPress and Shopify ecosystems that are designed to convert, scale, and last. My focus is not just on building websites but on engineering complete digital solutions that combine performance, scalability, and business logic. From custom e-commerce stores to complex backend systems, I bridge the gap between design, development, and real-world business growth. 💡 Core Expertise: • Shopify Development: Custom Liquid themes, Shopify Plus setups, app integrations, checkout optimization, and conversion-focused storefronts • WordPress & WooCommerce: Bespoke themes, plugin development, Elementor/Divi builds, membership systems, and advanced WooCommerce architectures • Performance Engineering: Core Web Vitals optimization, ultra-fast loading websites, SEO-ready structure, and security hardening • Custom Development: PHP, Laravel, Node.js, MySQL/PostgreSQL for scalable backend systems and business logic ⚡ Advanced Capabilities: • REST & GraphQL API integrations for seamless third-party connectivity • Headless CMS setups using React / Next.js for modern web applications • CRM, ERP, and business tool integrations tailored to workflow automation • Subscription systems, payment gateways, and scalable e-commerce architecture 🤖 Automation & AI Enhancement: • Workflow automation using n8n, Zapier, and Make • AI-powered features like chat assistants, content generation tools, and smart product systems • Automated data syncing between website, CRM, and business tools 🎯 My Approach: I build with precision, scalability, and conversion in mind. Every line of code is written to support business growth—not just aesthetics. Clean architecture. Fast performance. Real results.

I build premium Shopify stores that turn traffic into revenue - full design, development, and conversion strategy, not just a theme setup. 7+ years of Shopify development. 100+ Shopify stores launched for premium DTC brands. Top Rated on Upwork with a 100% Job Success Score. I've worked with premium DTC brands across fashion, beauty, wellness, lifestyle, food and beverage, and home goods. From early-stage founder launches to scaling brands doing millions in annual revenue. I work with brands that want a Shopify store built around how customers actually buy - not a generic template dressed up with brand colors. Every project starts with understanding where your store is losing customers, then building or rebuilding around that specific problem. That's the difference between a Shopify developer and a Shopify growth partner. Results clients typically see after working with me: - Conversion rate: 1.2% to 3-4% post-launch - Average order value: roughly 2x within the first quarter - Page load time: under 1.5 seconds across mobile and desktop - Revenue: up to 50% increase post-launch, including one client generating $1M+ in their first year WHAT I DO Shopify & Shopify Plus Development - complete Shopify store setup, custom Shopify theme development, Shopify 2.0 architecture, Liquid coding, metafields, custom sections, filters, and product page structures built for conversion, not just presentation. I build stores that are fast, scalable, and easy for your team to manage after handoff. Shopify Store Design & UI/UX - mobile-first Shopify design, editorial layouts for premium brands, storytelling sections, A+ content blocks, Figma to Shopify builds, and UGC integration. I design and develop together - no handoff between a designer and a separate developer, which means the final build matches the vision without losing anything in translation. Shopify CRO & Conversion Optimization - PDP restructuring, homepage hierarchy fixes, cart and checkout optimization, A/B testing using Intelligems, Shoplift, and Elevate, Klaviyo email flow setup, and upsell and cross-sell strategy. I focus on the specific point in your funnel where customers are dropping off, not generic best practices applied blindly. Shopify Speed & Performance Optimization - Core Web Vitals improvement, Shopify page speed optimization, image compression to WebP, CSS and JS minification, lazy loading, and app stack cleanup. Speed is a conversion lever - a one-second delay in load time can cost up to 7% in conversions. Shopify Store Migrations - WooCommerce to Shopify, BigCommerce to Shopify, Magento to Shopify, Squarespace to Shopify and Wix to Shopify migrations handled with full SEO preservation, 301 redirect mapping, metadata migration, and zero downtime cutover. Whatever platform you're moving from, your search rankings stay intact after launch, not rebuilt from scratch. Shopify Theme Customization - Impulse, Prestige, Dawn, Eurus, Local, Palo Alto, Refresh, and custom Liquid development for brands that need more than an out-of-the-box theme can deliver. I work directly in theme code - no page builders, no shortcut apps that slow the store down. Shopify App Integration & Setup - Klaviyo, Recharge, Seal Subscriptions, Skio, Appstle, Judge.me, Yotpo, Intelligems, Shoplift, GA4, Meta Pixel, TikTok Pixel, Google Tag Manager, Weglot, ShipStation, and 3PL integrations. The right app stack chosen for your specific needs, not every app installed by default. Shopify SEO - URL structure, metadata migration, redirect mapping, sitemap setup, image alt text, structured data, and on-page SEO best practices baked into every build from day one, not added as an afterthought. Shopify Redesign & Store Rebuild - full Shopify redesigns for brands that have outgrown their current store, inherited a poorly built setup, or want a conversion-focused rebuild rather than a cosmetic refresh. Shopify Subscription Setup - recurring subscription models, subscribe-and-save pricing, customer subscription portals with pause, skip, and cancel functionality using Recharge, Seal Subscriptions, Skio, and Appstle. Shopify Landing Page Development - high-converting landing pages for paid traffic, product launches, and seasonal campaigns, built to load fast and convert without the bloat of a page builder. WHO I WORK BEST WITH I do my best work with premium DTC brands that have a real product and real traffic but a store that isn't converting at the level the brand deserves. Founders who want a strategic partner on the build, not just someone to execute a ticket list. Brands rebuilding or scaling an existing Shopify store rather than starting from zero. Agencies needing a reliable white-label Shopify development and design partner for their clients. New brand launches that need a premium Shopify experience built right the first time, not rebuilt six months later. If any of that sounds like you - message me and let's look at what your store is actually costing you.

🛒 Shopify & WooCommerce Expert | Store Setup, Custom Development, CRO, Performance Optimization & On-Page SEO | ☑️ 885+ Websites Delivered | ☑️ 480+ eCommerce Stores Completed | Full-Stack Developer (WordPress, Laravel & CodeIgniter 4) | 🤝 Reliable Long-Term Partner Hi, I'm Sajjan Jha — a full-time website and eCommerce developer with 18+ years of experience building fast, scalable, and conversion-focused websites and online eCommerce stores for businesses worldwide. I specialize in Shopify and WooCommerce development, helping brands launch, optimize, and grow high-performing eCommerce stores with clean design, smooth user experience, and strong technical foundations. Over the years, I’ve successfully delivered 885+ websites, including 480+ eCommerce projects, while maintaining a 100% Job Success Score and consistent 5-star reviews on Upwork. I’m proud to be recognized as a Top-Rated Freelancer known for reliable communication, attention to detail, and quick turnaround times. 🕒 Availability: 52+ hours/week | 6:00 a.m. – 10:00 p.m. EST 💰 Shopify Store Development Expertise ⬩ Shopify Store Setup & Customization ⬩ Shopify Theme Customization & Development ⬩ Shopify Theme Development from Figma/PSD ⬩ Shopify App Integration and Development ⬩ Shopify Speed & Performance Optimization ⬩ Highly Skilled Shopify Liquid Developer ⬩ Store Migration from WooCommerce to Shopify ⬩ Shopify Plus Store Development & Customization ⬩ Shopify Store Audits & Bug Fixing ⬩ Shopify Website Checkout Customization ⬩ Shopify Conversion Rate Optimization (CRO) ⬩ Shopify Store Landing Page Expert ⬩ Shopify eCommerce Store On-Page SEO ⬩ Shopify Store Troubleshooting & Maintenance ╰┈➤ Experienced in customizing many popular Shopify themes such as Impulse, Prestige, Empire, Ella, Pipeline, Motion, Taiga, and others—tailored for performance, pixel-perfect design, and brand consistency. 🌐 WordPress Development Services ⬩ Custom WordPress Website Development ⬩ WordPress Theme Customization ⬩ PSD / Figma to WordPress Conversion ⬩ WordPress Theme & Plugin Development ⬩ WooCommerce Store Setup & Customization ⬩ WordPress Website Redesign ⬩ WordPress Landing Page Expert ⬩ Shopify ↔ WordPress Migration ⬩ WordPress Bug Fixing and Security Hardening ⬩ Elementor, Divi, WPBakery Expert ⬩ Membership & Booking System Integration ⬩ WPForms / Gravity Forms Customization ⬩ WordPress Speed Optimization ⬩ WordPress Maintenance & Support 🛒 WooCommerce Store Development Expertise ⬩ WooCommerce Store Setup & Customization ⬩ WooCommerce Theme Integration & Customization ⬩ Custom WooCommerce Theme Development from Figma/PSD ⬩ WooCommerce Plugin Integration & Development ⬩ WooCommerce Store Redesign & Optimization ⬩ Seamless Shopify to WooCommerce Migrations ⬩ WooCommerce Payment Gateway Integration ⬩ WooCommerce Store Landing Page Expert ⬩ WooCommerce Bug Fixing and Security Hardening ⬩ WooCommerce Speed & Performance Optimization ⬩ WooCommerce Store On-Page SEO ⬩ WooCommerce Troubleshooting & Maintenance ╰┈➤ Experienced in working with many popular WooCommerce themes, including Divi, Astra, Botiga, Neve, Shoppe, OceanWP, Shoptimizer, Porto, Shopkeeper, Woostify, Customify, Løge, eStore, Flatsome, Storefront, Extra, SeedProd, Sydney, and more. 🚀 eCommerce Store Performance & Speed Optimization ⬩ eCommerce Store Speed Optimization ⬩ Store Performance Audits & Troubleshooting ⬩ Mobile & Desktop Speed Optimization ⬩ Google PageSpeed & Core Web Vitals Optimization ⬩ GTmetrix / Lighthouse Performance Tuning ⬩ eCommerce Store Load Time Reduction ⬩ Liquid / HTML Code Optimization & Cleanup ⬩ Optimize Render-Blocking Resources ⬩ JavaScript & CSS Minification ⬩ Lazy Loading Implementation ⬩ Caching Implementation (Browser & Server-side) ⬩ Image Compression & Optimization 🎯 On-Page SEO Services (Technical SEO for eCommerce Stores) ⬩ Technical On-Page SEO Audits ⬩ Meta Tags & Header Tags Optimization ⬩ SEO Content Optimization & Keyword Placement ⬩ Internal Linking & SEO-Friendly URLs ⬩ Schema Markup / Rich Snippets Setup ⬩ Breadcrumbs, Canonical Tags, Robots.txt, Sitemaps ⬩ GA4, Google Search Console & GTM Integration ⬩ SEO Fixes using Ahrefs, SEMrush, Screaming Frog ⬩ SEO Navigation Optimization & Broken Link Fixing ⬩ Conversion Rate Optimization (CRO) ⬩ Image Alt Text Optimization ⬩ Redirect Mapping & Cleanup ⬩ Tools: Yoast SEO, Rank Math, All-in-One SEO Pack ⬩ E-commerce On-Page SEO (Shopify, WooCommerce) 🛠️ Platforms & Tools I Work With ⬩ CMS: Shopify, WordPress/WooCommerce, & Squarespace ⬩ Performance Tools: Google Analytics, Google Search Console, Google PageSpeed Insights, GTmetrix, & Lighthouse ⬩ SEO Tools: SEMrush, Ahrefs, Moz Pro, Yoast, Rank Math, & Screaming Frog ⬩ Marketing Integrations: GA4, GTM, Mailchimp, & Klaviyo I build pixel-perfect, high-converting eCommerce solutions with clean, scalable code—always aligned with your business goals. 🚀 Let’s build something fast, scalable, and SEO-optimized — together. Best regards, Sajjan Jha

Hi there! I help ecommerce brands, agencies, and growing businesses build reliable Shopify Plus stores, AI automation systems, custom apps, and full-stack digital products that are clean, scalable, and built for real business use. With 10+ years of experience in Shopify development, full-stack engineering, AI automation, and custom integrations, I focus on building solutions that do more than look good. They improve operations, increase conversions, automate repetitive work, and connect smoothly with your existing tools. 💡 Shopify Plus & E-commerce Development ✅ Shopify & Shopify Plus store design, redesign, development, theme customization, and OS 2.0 upgrades ✅ Figma, PSD, XD to Shopify using Liquid, HTML, CSS, JavaScript, and modern frontend practices ✅ Custom Shopify sections, templates, metafields, product pages, collection pages, and landing pages ✅ CRO-focused improvements, checkout optimization, upsells, cross-sells, AOV growth, and post-purchase flows ✅ Shopify Markets, multilingual stores, multi-currency, internationalization, and multi-region setup ✅ Shopify Functions, Checkout UI Extensions, Bundles, subscriptions, memberships, loyalty, and B2B/DTC workflows ✅ Private apps, custom APIs, ERP, CRM, POS, 3PL, ShipStation, Klaviyo, HubSpot, and third-party integrations ✅ Store speed optimization, Core Web Vitals, UX audits, SEO cleanup, GA4, Meta Pixel, and conversion tracking ✅ Headless Shopify Plus, WooCommerce, Magento, and custom ecommerce platform development ✅ AI-powered shopping experiences with chatbots, smart search, product discovery, recommendations & personalization 💡 AI Automation & Generative AI Solutions I build production-ready AI systems that don’t just demo well, they run reliably inside your business. ✅ Custom AI agents, virtual employees, workflow automation, and intelligent business process automation ✅ AI chatbots, customer support automation, ecommerce assistants, smart search, and product recommendation systems ✅ RAG systems, enterprise knowledge bases, semantic search, and intelligent document retrieval ✅ AI applications using OpenAI, Claude, Gemini, Mistral, Groq, DeepSeek, Hugging Face, and open-source LLMs ✅ LangChain, LangGraph, LlamaIndex, CrewAI, multi-agent workflows, and custom AI orchestration ✅ OCR, invoice processing, document intelligence, structured data extraction, summarization, and classification ✅ Vector databases including Pinecone, ChromaDB, PGVector, Weaviate, and Qdrant ✅ AI integrations with Shopify, HubSpot, CRMs, ERPs, internal tools, databases, and third-party APIs ✅ Automation using n8n, Make, Zapier, APIs, Selenium, Puppeteer, Playwright, and custom Python scripts ✅ Monitoring, evaluation, prompt optimization, PII handling, cost control, and secure AI deployment 💡 Custom Web App, Mobile Apps & Full-Stack Development For clients who need more than a store or automation script, I also build full custom platforms and business systems. ✅ Custom web applications, SaaS platforms, dashboards, marketplaces, admin panels, and internal tools ✅ Frontend development using React, Next.js, Vue.js, Angular, Svelte, TypeScript, HTML, CSS, and JavaScript ✅ Backend development using Python, Django, FastAPI, Node.js, Express, NestJS, PHP, Laravel, and CodeIgniter ✅ Cross-platform mobile apps using React Native, Expo, and TypeScript ✅ API development, REST, GraphQL, payment gateways, Stripe, PayPal, Razorpay, and custom third-party integrations ✅ Databases and infrastructure using PostgreSQL, MySQL, MongoDB, Firebase, Supabase, Redis, and Appwrite ✅ Real-time features including live tracking, messaging, notifications, maps, WebSockets, WebRTC, and media processing ✅ Cloud deployment, CI/CD, Docker, Kubernetes, AWS, Google Cloud, Azure, DigitalOcean, Vercel, and Netlify 💡 How I Work ✅ I build with a production mindset, not just a “get it done” mindset ✅ Clean code, scalable structure, proper testing, and long-term maintainability ✅ Clear communication, reliable delivery, and proactive problem-solving ✅ Strong focus on business outcomes, not just technical implementation ✅ Comfortable working directly with founders, ecommerce teams, SaaS companies, and agencies ✅ Available for white-label development, long-term retainers, project-based work, and ongoing technical support Whether you need a high-converting Shopify Plus store, a custom ecommerce feature, an AI agent for your operations, a workflow automation system, or a complete web/mobile application, I can help you design, build, integrate, and scale it properly. Send me your store, workflow, or product brief, and I’ll help you identify the cleanest technical path to build, automate, or scale it. Let’s discuss your project 🤝

I help businesses build modern, high-converting websites using WordPress, WooCommerce, Shopify, and custom frontend development. With experience in ecommerce, fashion, beauty, education, and business websites, I focus on creating fast, responsive, and conversion-focused digital experiences. What I Specialize In ✔ WooCommerce Development & Customization ✔ Shopify Store Design & Development ✔ Elementor & Webflow Development ✔ Custom Product & Checkout Pages ✔ Speed Optimization & SEO Improvements ✔ Mobile Responsive UI/UX ✔ API Integrations & Automation ✔ Figma/XD to WordPress or Shopify Why Clients Work With Me ✔ Clean & Scalable Code ✔ Fast Communication ✔ Pixel-Perfect Design ✔ Long-Term Support ✔ Performance & Conversion Focused I can help with complete website development, redesigns, ecommerce customization, landing pages, and ongoing maintenance. Let’s build something professional that helps grow your business.