Sanchit K.

Shopify developer and full-stack engineer. I build Shopify stores, headless storefronts and the custom software around them: admin panels, POS systems, supplier integrations and APIs for the jobs a Shopify app can't do. 14 years in web development. I run Xava Web Services and work with ecommerce and service businesses in the UK, US, Canada, Europe and India. You deal with me directly, and I write the code. SHOPIFY • Custom themes on Online Store 2.0 and Liquid, with sections your team can edit without a developer • Headless Shopify on Hydrogen and Oxygen with the Storefront API, content managed in metaobjects and metafields • Custom apps and integrations with the Admin GraphQL API: product sync, supplier feeds, inventory, orders • Migrations from WooCommerce and Magento to Shopify, with redirects so rankings are kept • Speed fixes, checkout and shipping setup, app clean-ups, structured data for SEO FULL-STACK • Front end: Next.js, React, TypeScript, Tailwind • Back end: Node.js, NestJS, GraphQL and REST APIs • Data: PostgreSQL with Prisma or Drizzle, MongoDB, Redis, RabbitMQ • Infrastructure: Docker, Vercel, Railway, DigitalOcean, Cloudflare R2, GitHub Actions CI/CD • Payments and messaging: Stripe and Stripe Terminal, transactional email, WhatsApp Business API • WordPress and WooCommerce when that is the right tool for the job RECENT BUILDS • B2B ecommerce platform for a UK wholesaler, built to replace their Shopify setup. Next.js storefront, NestJS + GraphQL + PostgreSQL backend, and a Shopify-style admin with orders, draft orders, discounts, inventory across locations, B2B companies and catalogs, customer segments, staff permissions and PDF invoices. Dockerised, deployed with CI/CD. • Point-of-sale system for a florist: full-screen register with staff PIN login, Stripe Terminal card payments, order tickets and a back office, built on Next.js and Postgres. • Headless Shopify storefront on Hydrogen and Oxygen for a US hardware retailer, with page copy editable from Shopify metaobjects. • Supplier portal for a UK motorsport parts retailer that pulls supplier catalogues and pushes products straight into Shopify. • WordPress to Next.js rebuild for an auto detailing studio, with a lead inbox, email alerts and GA4 / Google Ads conversion tracking. • Flutter mobile app with a Node.js backend and WhatsApp OTP login. TRACKING THAT MATCHES YOUR ORDERS I can set up GA4, Google Tag Manager and Meta Pixel + Conversions API as part of the build and test them against real orders, so your ad platforms report the same sales Shopify does. Most developers hand this off to someone else. HOW I WORK • Written scope and milestones before any code is written • Code in your GitHub and deployed to your accounts, so you own everything • Regular updates while the work is in progress, and a walkthrough at handover Send me your store URL and what you want built or fixed. I'll come back with a straight answer on how I would do it and what it will take.