12+ Years Experience · Web & Ecommerce Engineering

Senior Web Developer & Ecommerce Web Architect.

I’m a Senior Web Developer and Shopify Expert specializing in scalable ecommerce development. I help brands build high-performance websites and online stores using platforms like Shopify, Shopify Plus, WordPress, Squarespace, and modern headless solutions. From technical architecture and frontend engineering to performance optimization and technical SEO, I focus on creating fast, reliable digital experiences that improve user engagement, conversions, and long-term business growth.

Web Development UI/UX Design Ecommerce Performance & SEO Wordpress

Design to code

  • PSD, Figma, XD, HTML → production-ready builds
  • Responsive layouts & design systems
  • UI/UX optimization & accessibility

Full-stack delivery

  • Frontend, CMS, APIs & integrations
  • Code reviews, mentoring, agile workflows
  • Performance, SEO, automation & QA
Start a project See services
Ajay Karan Sharma Senior Shopify Developer
Shopify Development Shopify Plus Hydrogen Ecommerce Architecture Wordpress

I take end-to-end ownership of projects — from discovery and planning to development, launch, and continuous optimization — ensuring every solution is built for scalability, performance, and long-term maintainability.

What I Deliver

  • Architecture & Technical Strategy: Designing scalable systems aligned with business growth, performance, and maintainability.
  • Full-Stack Web & Ecommerce Development: Custom development across Shopify, WordPress, headless commerce, and modern frontend stacks.
  • Performance & Technical SEO: Core Web Vitals optimization, structured data implementation, and site speed improvements.
  • Clean Code & Scalable Delivery: Maintainable codebases, clear documentation, and reliable production-ready deployments.

Technology Stack

Shopify | Shopify Plus | Liquid | Shopify Theme Development | Shopify App Integration | Hydrogen | Headless Shopify | Checkout UI Extensions | POS UI Extensions | React | Next.js | JavaScript (ES6+) | TypeScript | HTML5 | CSS3 | SCSS | Tailwind | Node.js | Express | PHP | Laravel | GraphQL | REST APIs | Webhooks | WordPress | WooCommerce | Webflow | Wix | Squarespace | Git | GitHub | CI/CD | Vercel | Netlify | Cloudflare | AWS | Core Web Vitals | Technical SEO | Schema Markup | CRO | AI Tools

Stats

Key Metrics that Speak to My Expertise

A snapshot of my professional journey and the impact I've made in the web and ecommerce space.

12+ Years of Web & Ecommerce Development Experience
600+ Websites & Shopify Projects Delivered Globally
Enterprise-Grade Scalable Architecture, Performance & Technical SEO
Global Clients Remote-First Collaboration Across Time Zones
About

Senior Web Developer & Ecommerce Architect delivering scalable digital platforms.

I am Ajay Karan Sharma, a senior web developer and Shopify expert in India specializing in high-performance websites and ecommerce development. I collaborate with design, product, and growth teams to architect, build, and optimize digital platforms that drive measurable business outcomes.

My expertise spans full-stack development, Shopify and Shopify Plus builds, custom WordPress solutions, and modern React/Node architectures. From discovery and UX planning to deployment, performance optimization, and technical SEO, I ensure every project launches with speed, stability, and long-term scalability.

End-to-End Development

Complete ownership from architecture to launch for scalable web and ecommerce platforms.

Performance & Technical SEO

Core Web Vitals optimization, structured data, speed diagnostics, and search visibility improvements.

Modern Frontend Engineering

React, JavaScript, Liquid, and responsive UI systems built for performance and scalability.

Shopify & CMS Expertise

Shopify, Shopify Plus, WordPress, Webflow, and API-driven ecommerce implementations.

Infrastructure & Deployment

Vercel, Netlify, traditional hosting, SSL setup, CI/CD pipelines, and environment management.

Analytics & Growth Optimization

Funnels, experimentation, reporting, conversion rate optimization, and AI-assisted workflows.

Technical Expertise & Toolbox

  • HTML5, CSS3, SCSS
  • JavaScript (ES6+)
  • TypeScript
  • Responsive & Mobile-First Design
  • Accessibility (WCAG Standards)
  • Cross-Browser Compatibility
  • UI/UX Implementation
  • React & Next.js
  • Node.js & Express
  • PHP & Laravel
  • Liquid (Shopify Templating)
  • GraphQL & REST APIs
  • Webhooks & Middleware
  • Headless Architecture
  • Shopify & Shopify Plus
  • Shopify Theme Development
  • Checkout & POS UI Extensions
  • Hydrogen & Headless Shopify
  • WordPress & WooCommerce
  • Webflow & Wix
  • Custom CMS Integrations
  • Performance Optimization
  • Core Web Vitals Improvements
  • Technical SEO & Schema Markup
  • Structured Data Implementation
  • Speed Audits & Debugging
  • Conversion Rate Optimization
  • Analytics & Funnel Tracking
  • Vercel & Netlify Deployment
  • AWS & Cloudflare
  • Traditional Hosting & Servers
  • Domain & SSL Configuration
  • CI/CD Pipelines
  • Git & GitHub Workflows
  • AI Tools (ChatGPT, Cursor, Gemini, Copilot)
Experience

Senior Shopify & Full-Stack Engineer — From Architecture to Execution.

Over a decade of building high-performance ecommerce platforms, scalable web applications, and revenue-focused digital systems. I operate across strategy, architecture, engineering, and delivery — ensuring every build is technically sound, SEO-optimized, and conversion-driven.

Technical Architecture & Leadership
  • Designed scalable Shopify & headless commerce architectures using Liquid, React, and modern APIs.
  • Defined engineering standards, Git workflows, code reviews, and deployment strategies.
  • Led cross-functional teams across design, marketing, and product stakeholders.
  • Planned migrations (Shopify 2.0, CMS transitions, hosting shifts) with zero-downtime rollouts.
  • Turned complex business requirements into structured technical roadmaps.
Shopify & Full-Stack Development
  • Built custom Shopify themes, sections, metafields, and advanced cart logic.
  • Integrated third-party APIs, payment gateways, shipping systems, ERPs & CRMs.
  • Developed dynamic frontends using React, JavaScript (ES6+), and performance-first CSS.
  • Created custom backend logic, webhooks, and automation workflows.
  • Converted Figma/PSD/XD designs into pixel-perfect, production-ready builds.
Performance Engineering & Technical SEO
  • Optimized Core Web Vitals (LCP, CLS, INP) for faster page loads and better rankings.
  • Implemented structured data, schema markup, clean URL architecture & crawl optimization.
  • Reduced bundle sizes, improved caching strategies, and enhanced CDN configurations.
  • Conducted technical audits to fix rendering, indexing, and performance bottlenecks.
  • Improved conversion rates through speed optimization and UX refinements.
DevOps, Infrastructure & Automation
  • Configured CI/CD pipelines, staging environments, and automated deployments.
  • Managed hosting across Vercel, Netlify, and traditional server infrastructures.
  • Handled domain management, SSL, DNS routing, and environment isolation.
  • Implemented monitoring, logging, and incident response workflows.
  • Built automation scripts to streamline releases and reduce human error.

Where I Add Immediate Value

  • Leading complex Shopify builds or re-platforming projects.
  • Solving performance, SEO, or scalability bottlenecks.
  • Auditing and restructuring messy or legacy codebases.
  • Acting as a senior technical bridge between business & engineering teams.
  • Worked with stakeholders to turn fuzzy ideas into shippable roadmaps.

Engagement Models

  • Technical Lead embedded within product/design teams.
  • Senior Shopify consultant for agencies and ecommerce brands.
  • End-to-end project ownership — discovery to long-term optimization.
  • Performance & technical SEO audit specialist.

Business Impact Focus

  • Revenue-driven engineering decisions.
  • Conversion rate optimization alignment.
  • Data-backed iteration & experimentation.
  • Long-term maintainability & scalability mindset.
Services

Engineering & Ecommerce Solutions for Growth-Focused Brands.

I help businesses architect, build, optimize, and scale high-performance websites and Shopify ecosystems — combining technical depth with conversion-driven execution.

🧠

Strategy, Audits & Technical Roadmapping

Clear technical direction before a single line of code is written — focused on scalability, performance, and measurable business growth.

  • ✔ Technical SEO & performance audits
  • ✔ Ecommerce architecture planning (Shopify & headless)
  • ✔ Platform selection & migration strategy
  • ✔ Conversion-focused experimentation roadmap
  • ✔ Risk analysis & scalability planning
⚙️

Custom Design Implementation & Development

Pixel-perfect, performance-first builds from Figma, XD, or PSD into production-ready Shopify, React, and CMS systems.

  • ✔ Custom Shopify themes (Online Store 2.0)
  • ✔ Advanced cart logic & checkout customization
  • ✔ Responsive UI systems & reusable components
  • ✔ API integrations, webhooks & backend logic
  • ✔ Accessibility & clean code standards
🛒

Ecommerce & CMS Platform Expertise

Deep hands-on experience across commerce and content platforms — tailored to business scale, complexity, and growth stage.

  • ✔ Shopify & Shopify Plus development
  • ✔ Headless commerce (React / API-driven builds)
  • ✔ WordPress & WooCommerce custom solutions
  • ✔ Webflow, Wix & Squarespace builds
  • ✔ CMS content modeling & governance setup
🚀

Infrastructure, DevOps & Optimization

Beyond development — ensuring your platform is secure, fast, reliable, and built for long-term growth.

  • ✔ Hosting setup (Vercel, Netlify, traditional servers)
  • ✔ Domain, DNS, SSL & environment management
  • ✔ CI/CD pipelines & deployment automation
  • ✔ Core Web Vitals & performance optimization
  • ✔ Monitoring, analytics & reporting systems
📈

Performance Optimization & CRO

Speed, usability, and data-driven improvements that directly impact revenue, SEO rankings, and customer experience.

  • ✔ Core Web Vitals optimization (LCP, CLS, INP)
  • ✔ Shopify speed audits & theme refactoring
  • ✔ Conversion rate optimization (CRO) experiments
  • ✔ A/B testing & funnel performance analysis
  • ✔ Image, asset & bundle size optimization
🔄

Platform Migration & Replatforming

Seamless transitions from legacy systems to modern, scalable commerce platforms without SEO loss or downtime.

  • ✔ WooCommerce / Magento to Shopify migrations
  • ✔ Shopify 1.0 to 2.0 upgrades
  • ✔ CMS restructuring & URL mapping
  • ✔ Data migration (products, customers, orders)
  • ✔ SEO-safe redirects & performance validation
🔗

API Integrations & Automation

Connecting your ecommerce system with payment gateways, logistics, CRMs, ERPs, and marketing platforms.

  • ✔ Payment gateway & shipping integrations
  • ✔ ERP, CRM & inventory system connections
  • ✔ Custom API & webhook development
  • ✔ Workflow automation & process optimization
  • ✔ Marketing & email automation integrations
🎯

Technical Consulting & Team Enablement

Senior-level guidance for agencies, startups, and enterprise teams needing architecture clarity and engineering direction.

  • ✔ Codebase audits & refactoring strategy
  • ✔ Engineering standards & documentation
  • ✔ Mentoring developers & cross-team alignment
  • ✔ Technical hiring consultation
  • ✔ Long-term scalability planning

Need a senior Shopify/Web Developer for your next project?

Let’s Discuss Your Project
Shopify Center of Excellence

When it comes to Shopify — I don’t just build. I architect and optimize for scale.

Deep platform mastery spanning Shopify Plus, Hydrogen, Checkout Extensibility, and Online Store 2.0. From complex migrations to custom checkout UI extensions, I’ve led 50+ store launches and helped brands scale from early-stage growth to multi-million revenue operations. This is where commerce meets craft — strategy, engineering precision, optimization, and long-term performance care under one roof.

150+ Shopify store launches & platform migrations
Shopify Plus Checkout Extensibility & custom UI implementations
Hydrogen Headless commerce storefront builds
Core Web Vitals Performance & SEO-driven engineering

Platform Mastery

  • Shopify Plus architecture & enterprise configurations
  • Checkout Extensibility & custom checkout UI extensions
  • Liquid development, metafields & dynamic content systems
  • Online Store 2.0 theme architecture
  • Technical Shopify SEO & schema implementation

Build, Migrate & Integrate

  • Custom Shopify theme development (performance-first)
  • Hydrogen headless storefront builds
  • Private & custom app integrations
  • ERP, CRM, payment & shipping API integrations
  • Zero-downtime store migrations & data transfers

Optimization & Long-Term Scale

  • Speed optimization & Core Web Vitals improvement
  • Conversion rate optimization (CRO) experiments
  • Custom landing pages & high-performing PDPs
  • Analytics, tracking & performance monitoring
  • Post-launch maintenance & scaling strategy

Advanced Shopify Capabilities

  • Custom Shopify app development (private & custom apps)
  • Shopify Functions & Checkout Extensibility migrations
  • Headless commerce using Hydrogen & Storefront API
  • Subscription models, bundles & advanced pricing logic
  • Multi-store & international expansion architecture
  • B2B configurations & wholesale storefront setup
  • Advanced metafield systems & dynamic content modeling

Business Impact I Focus On

  • Faster page loads → better SEO rankings
  • Optimized checkout flows → higher conversion rates
  • Clean architecture → easier long-term scaling
  • Data-driven iteration → measurable revenue growth
  • Automation systems → reduced operational overhead

Typical Shopify Engagements

  • Rebuilding underperforming Shopify stores
  • Migrating from WooCommerce, Magento or custom stacks
  • Fixing performance & Core Web Vitals issues
  • Implementing Checkout Extensibility before Shopify deadlines
  • Acting as senior Shopify consultant for agencies

Planning a Shopify build, migration, or performance upgrade?

Talk to a Shopify Specialist
Case Studies

Real builds. Real brands. Real outcomes.

A selection of Shopify, Shopify Plus, Hydrogen, WooCommerce projects — covering migrations, performance, checkout customization, and scalable ecommerce architecture.

Shopify Plus · Checkout · Global Ecommerce MrsFields.com

Worked on Shopify Plus implementation and feature delivery to support scalable commerce, smoother checkout flows, and long-term maintainability.

  • Theme enhancements, sections, metafields & merchandising flexibility
  • Checkout extensibility / UI extension support and checkout UX improvements
  • Integrations and operational improvements for faster launches
Shopify PlusLiquidCheckout ExtensibilityJSSEO
Hydrogen · Headless Shopify · Performance Techniks Tool

Built and maintained a headless storefront with Hydrogen to enable faster experiences, modern UI architecture, and API-driven commerce.

  • Hydrogen storefront architecture and reusable components
  • Storefront API / GraphQL integrations and optimized data fetching
  • Performance-first UI patterns and deployment workflow
HydrogenReactGraphQLStorefront APIShopify Plus
Vercel · Ecommerce · UX + Performance HealthyBaby

Contributed to Shopify storefront improvements focused on UX polish, performance, and conversion-friendly shopping flows.

  • Collection/PDP enhancements and reusable UI blocks
  • Performance cleanup (assets, layout stability, page speed improvements)
  • App integrations and safe theme updates without breaking UX
ShopifyReactJavaScriptCore Web VitalsCRO
Migration · SEO Safe · Replatforming WooCommerce / Magento → Shopify

Led migration planning and build execution with URL mapping, redirect strategy, and performance-first theme architecture.

  • SEO-safe redirects, URL structure mapping, and launch QA
  • Data migration: products, customers, orders, collections
  • Theme rebuild with modern sections and scalable templates
ShopifyRedirectsSEOTheme DevQA
Custom App · Automation · Admin Tooling Shopify Private App Automation

Built internal tooling to reduce manual ops and make merchandising faster using Shopify APIs, webhooks, and automation logic.

  • Shopify Admin API integrations + secure auth patterns
  • Webhooks + automation to sync and validate commerce data
  • Operational speed improvements through admin workflows
Node.jsShopify APIWebhooksGraphQLPostman
Performance · CRO Shopify Store Speed Optimization

Improved storefront performance and user experience by optimizing assets, removing render-blocking scripts, and restructuring theme code.

  • Reduced page load time by 40%
  • Optimized Liquid templates and assets
  • Improved Core Web Vitals performance
Shopify Liquid JavaScript Performance
Checkout · Shopify Plus Checkout Extensibility Implementation

Implemented Shopify Checkout UI extensions to add custom logic, upsells, and dynamic checkout elements.

  • Custom checkout UI extension blocks
  • Improved checkout flow UX
  • Enhanced order conversion rates
Checkout Extensibility React Shopify Plus APIs
Theme Development · UX Custom Shopify Theme Build

Developed a fully custom Shopify theme with reusable components and flexible sections for marketing teams.

  • Modular sections and blocks
  • Flexible product templates
  • Improved UX for product discovery
Shopify Liquid JavaScript CSS
Integration · Apps Shopify App Integrations

Integrated multiple Shopify apps and APIs to extend store capabilities including automation, reviews, and customer personalization.

  • Third-party app integrations
  • Custom storefront logic with metafields
  • Improved marketing and customer engagement
Shopify Apps APIs Metafields Automation
Skills & Platforms

Full-stack ecommerce engineering — Shopify-first, performance-driven.

I design and build scalable storefronts, headless experiences, and conversion-focused product pages. From Shopify Plus checkout extensibility to Hydrogen builds, I ship clean architecture that performs.

Shopify Plus · Checkout Extensibility Hydrogen · Headless Commerce Core Web Vitals · Technical SEO Apps · APIs · Webhooks Migrations · Rebuilds · Refactors CRO · Analytics · Tracking
🛒

Shopify Engineering

Deep Shopify development across themes, apps, APIs, storefront UX and Plus-level scaling.

  • Shopify Store 2.0 theme architecture
  • Liquid templates, sections, blocks, metafields
  • Cart / PDP optimization and custom flows
  • Admin API + Storefront API integrations
  • Private apps, custom apps, app integrations
🧩

Shopify Plus & Checkout

Advanced Shopify Plus work: checkout extensibility, UI extensions, and scalable commerce architecture.

  • Checkout UI Extensions (best-practice implementation)
  • POS UI Extensions (retail flows)
  • Shopify Functions (discounts, logic, validations)
  • B2B & international setup strategy
  • Implementation planning for Shopify timelines
⚡

Performance & Technical SEO

Speed + SEO is not optional. I optimize templates, assets, and rendering for better rankings & conversion.

  • Core Web Vitals: LCP, CLS, INP improvements
  • Schema markup / structured data
  • Image strategy, lazy-loading, critical CSS
  • Caching/CDN strategies and bundle optimization
  • SEO-safe migrations + redirects mapping
🧠

Headless & Modern Frontend

Modern frontends that are maintainable, scalable, and built for real business workflows.

  • Hydrogen storefront builds
  • React component systems + reusable UI patterns
  • Next.js experience (SSR/ISR patterns)
  • TypeScript-ready builds and clean architecture
  • Accessibility and responsive UX refinement
🔗

APIs, Integrations & Automation

Connecting systems end-to-end: payments, shipping, marketing, ERP/CRM, and custom automation.

  • REST / GraphQL API integration
  • Webhooks, middleware, data sync pipelines
  • Shipping, payment, inventory integrations
  • Marketing & email automation integrations
  • Debugging with Postman and structured logs
🚀

Delivery, DevOps & Collaboration

Professional delivery workflows that keep releases calm, trackable, and stable.

  • Git / GitHub workflows + code reviews
  • CI/CD + staging environments (Vercel/Netlify)
  • Domains, DNS, SSL, environment isolation
  • Agile rituals: planning, standups, retros
  • Documentation & handover that teams trust
ShopifyShopify PlusLiquidHydrogenCheckout UI Extensions POS UI ExtensionsShopify FunctionsReactNext.jsJavaScript TypeScriptHTML5CSS3SCSSTailwindNode.js REST APIGraphQLWebhooksGitGitHub VercelNetlifyCloudflareAWS Core Web VitalsTechnical SEOSchema MarkupCROAnalytics ChatGPTCursorCopilotGemini
Frontend & responsive UX 97%
Shopify / Ecommerce (Plus, Hydrogen, Checkout) 96%
Performance optimization & technical SEO 94%
CMS ecosystems & integrations 93%
APIs, automation & DevOps delivery 90%
Client Testimonials

Trusted by ecommerce teams and growing brands.

Feedback from clients, engineering teams, and product leaders I've worked with across Shopify, headless commerce, and high-performance web builds.

★★★★★

Ajay helped us implement complex Shopify Plus checkout extensions while keeping performance extremely fast. His ability to translate technical requirements into business outcomes made our launch smooth.

RC
Director of Ecommerce Retail Collective
★★★★★

From Hydrogen storefront builds to mentoring our internal developers, Ajay consistently delivers high-quality work. His attention to detail and communication made collaboration effortless.

DL
Head of Engineering DTC Lifestyle Brand
★★★★★

Ajay translated our Figma designs into a fast, fully responsive storefront in record time. The code quality and documentation made it easy for our team to continue scaling the project.

TC
Product Design Lead Technology Company
★★★★★

We initially hired Ajay to stabilize our frontend stack, but he ended up improving our entire deployment workflow and mentoring multiple developers on best practices.

BS
Engineering Manager B2B SaaS Platform
★★★★★

Ajay bridges the gap between design and engineering perfectly. Our marketing team loved how quickly ideas could become production-ready landing pages and experiments.

GL
Growth Lead DTC Brand
★★★★★

Calm under pressure and extremely reliable during critical releases. Ajay is someone you want responsible for complex ecommerce launches.

DA
Program Director Digital Commerce Agency
Let’s collaborate

Build faster. Launch smarter. Scale confidently.

I partner with startups, agencies, and ecommerce brands to design, build, and optimize high-performance digital experiences. From Shopify Plus builds to headless commerce and frontend engineering, I help teams ship faster and scale sustainably.

  • Shopify development & Shopify Plus implementations
  • Hydrogen / headless commerce storefronts
  • Performance optimization & Core Web Vitals improvements
  • Theme development, migrations & technical SEO
  • Long-term maintenance and feature development

Ways we can work together

  • 🚀 Shopify store builds & migrations
  • ⚡ Performance optimization & CRO
  • 🧩 Custom feature development
  • 🛠 Long-term ecommerce engineering support
Start a project View case studies

Contact

Email
ajaykaran2424@gmail.com

Phone
+91 9418638495

Location
India · Remote worldwide

Shopify Expert · Shopify Partner · Full-stack Web Developer

Shopify Development Shopify Plus Hydrogen Headless Commerce Frontend Engineering Technical SEO
Response time

I usually respond within 1 hours.