Hi, I'm Sanjib Roy
I design and build enterprise-grade Shopify solutions for global brands, helping businesses create scalable, high-performance eCommerce experiences. With 8+ years of experience, I specialize in Shopify Plus, Checkout Extensibility, Shopify Functions, Headless Commerce, GraphQL, and enterprise integrations that improve performance, scalability, and customer experience.
How I Build Scalable Shopify Solutions
I specialize in designing, developing, and optimizing enterprise Shopify ecosystems that deliver exceptional customer experiences, scalable architecture, and measurable business results.
Shopify Theme Development
Build custom Shopify themes using Online Store 2.0, Liquid, Sections, and reusable components with clean, scalable architecture and responsive design.
Shopify Plus Checkout
Develop advanced checkout experiences using Shopify Functions, Checkout UI Extensions, custom validations, payment logic, and delivery customization.
Headless Commerce
Build lightning-fast storefronts using Hydrogen, React, Remix, GraphQL, and modern API-first architecture for enterprise brands.
API & System Integrations
Integrate Shopify with ERP, WMS, CRM, payment gateways, OMS, marketing platforms, and third-party services using GraphQL and REST APIs.
Performance Optimization
Improve Core Web Vitals, Lighthouse scores, page speed, bundle optimization, lazy loading, and overall storefront performance.
Technical SEO
Implement structured data, JSON-LD, metadata, canonical URLs, sitemap optimization, and SEO best practices to improve search visibility.
CI/CD & DevOps
Configure Git workflows, GitHub Actions, automated deployments, version control, and collaborative development pipelines.
Architecture Consulting
Design scalable Shopify architectures, review existing implementations, mentor engineering teams, and recommend best practices for long-term growth.
Recent Works
Discover my Shopify portfolio featuring custom themes, seamless integrations, and optimized e-commerce solutions. Each project reflects innovation, technical expertise, and a commitment to driving business success.
- All Cases
- Toys Platform
- Apparel Verticals
- Luxury Commerce
- Consumer Electronics
Shopify Plus Engine
Mattel Creations Hub
High-concurrency launch platform for collectible systems, optimized to manage heavy flash-sale traffic loads.
Shopify Plus Logic
Smartwool Core
Full-stack liquid theme implementation integrated with advanced custom checkouts and high-performance layout schemes.
Enterprise Storefront
Altra Running Portal
Engineered custom theme properties and transactional validations via Shopify Functions to drive fluid conversion.
Luxury Architecture
A.P.C. Paris / Global
Executed luxury e-commerce UX component patterns prioritizing mobile responsiveness and low latency load times.
Bespoke Storefront
ATM Collections
Premium fashion platform running specialized cart modification arrays and dynamic product rules.
Global Scale System
Dickies Global Hub
Maintained and scaled global theme architectures, standardizing Liquid schemas across multi-regional storefront operations.
Scale Architecture
Noise Smarttech Portal
High-scale consumer electronics platform optimized for ultra-fast checkout routing performance metrics.
Omni-Channel Engine
Aqualens Commerce
Supported critical high-concurrency optical storefront layouts and multi-channel backend sync pipelines.
My Resume
Professional History
Spearheading end-to-end full-stack architectures for cross-functional global enterprise brands, executing scalable migrations to unified Shopify Plus instances. Designing high-concurrency checkouts using Shopify Functions and UI Extensions, compressing cart abandonment by 40%. Building custom Node.js/GraphQL middleware to sync inventory and orders across global ERP/WMS layers. Lead developer for Smartwool and Altra Running.
Engineered customized storefront performance metrics across 10+ global web stores, boosting core vitals to achieve globally-distributed Lighthouse scores of 90+. Co-architected high-concurrency drop infrastructure for Mattel Creations supporting spikes of 100k+ simultaneous requests. Built headless prototypes using React.js, Node.js, and Kibo Commerce frameworks.
Spearheaded the critical critical frontend launch of Lenskart US. Programmed adaptive multi-currency localization algorithms and translation systems deeply integrated inside native Liquid theme files.
Developed specialized custom interactive product configurator pipelines and smart async cart systems for high-visibility clients like Mattel and Headphone Zone utilizing the Shopify AJAX API.
Programmed fully responsive website blueprints, robust template parameters, and fluid micro-interactions with clean semantic HTML5, CSS3, and JavaScript logic blocks.
Technical Expertise
Shopify Ecosystem
Enterprise Commerce DevelopmentFrontend Technologies
Modern UI EngineeringBackend & APIs
Scalable System IntegrationPerformance Engineering
Enterprise OptimizationDevelopment Workflow
Enterprise DeliveryDeveloper Tooling
ai-commit-reviewer-pro
NPM Package AuthorDeveloped an open-source CLI program using Node.js that integrates LLMs to automate code review evaluations and optimize Git submission metrics within CI/CD pipelines.
branch-validator-pro
NPM Package AuthorAuthored a CLI workflow enforcer tool designed to enforce enterprise branch naming conventions across decentralized team environments.
Education & Trust
Diploma in Computer Science & Technology
Bengal Institute of Technology
- Certified KIBO Core Developer
- Accredited Shopify Product Fundamental Expert
Technical Expertise & Solution Engineering
Designing scalable, enterprise-grade Shopify ecosystems that power global brands. Every solution is engineered with performance, maintainability, extensibility, and long-term business growth in mind—from storefront architecture to checkout customization and backend integrations.
Enterprise Schema Engineering
Build advanced JSON-LD implementations that improve search visibility, rich snippets, product discoverability, and technical SEO while following Google's structured data standards.
- Product Schema
- Organization & Brand Schema
- Breadcrumb & Collection Schema
- Review & FAQ Rich Results
- SEO-first Shopify Architecture
Shopify Functions & Checkout Extensibility
Develop enterprise checkout experiences using Shopify Functions, Checkout UI Extensions, and modern extensibility APIs to create high-performance, secure, and fully customized purchasing workflows.
- Custom Discounts
- Delivery & Payment Customization
- Cart & Validation Logic
- Checkout UI Extensions
- Shopify Plus Architecture
High-Performance Commerce Systems
Engineer scalable storefronts optimized for Core Web Vitals, enterprise traffic spikes, and global commerce operations using modern frontend architecture and efficient API orchestration.
- Core Web Vitals Optimization
- GraphQL API Engineering
- Lazy Loading & Code Splitting
- Hydrogen & Headless Commerce
- Enterprise Performance Audits
Contact With Me
Sanjib Roy
Senior Shopify Technical ArchitectAvailable for technical consultations, enterprise systems architecture mapping, and complex backend-to-storefront sync evaluations.