Welcome to my world

Hi, I'm Sultan Ahmad
a Full Stack Developer

Senior Shopify Engineer & Technical Lead with 8+ years of experience architecting high-scale e-commerce platforms, custom Shopify apps, checkout extensions, and headless storefronts. Expert in Shopify Functions, Checkout UI Extensions, API orchestration, and multi-store Shopify Plus ecosystems. Full-stack across TypeScript, PHP, React, and Laravel — with hands-on experience building production AI agents and agentic workflows for commerce automation.

Personal Portfolio Images
My Impact in Numbers

Delivering at Scale

8+ years building enterprise e-commerce platforms for global brands — tracked by measurable outcomes.

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Years of Experience

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Shopify Stores Delivered

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Websites Launched

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High-Traffic Apps Built

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Countries Served

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Lighthouse Score

Team Leadership

Led 4-person cross-functional teams — junior devs, QA & designers — through end-to-end project delivery

Global Reach

Delivered projects for clients in the US, UK, UAE & Australia across apparel, wellness, travel & retail

DevOps & CI/CD

GitHub Actions with SonarQube, Trivy & Gitleaks — automated security scanning & code quality on every push

Full Ownership

Requirements gathering → sprint planning → deployment → client training & handover on every project

Features

What I Do

Shopify Themes

I customize Shopify themes to create unique, high-converting stores. From modifying layouts and adding new sections to implementing Online Store 2.0 features and optimizing for speed and SEO.

Shopify Apps

I build custom Shopify apps to extend store functionality, automate processes, and enhance the customer shopping experience.

Web Development

I create responsive, high-performance websites and web applications with clean code, seamless user experience, and optimized for speed and SEO.

API Development

I develop secure, scalable APIs to enable seamless data integration between applications, enhancing functionality and performance.

API Integration

I integrate third-party APIs to connect services, automate workflows, and enhance functionality across web and eCommerce platforms.

Website Optimization

I optimise websites for faster load times, improved SEO, and enhanced user experience to boost engagement and conversions.

Visit my portfolio and keep your feedback

My Portfolio

20+ Projects 5 Categories 4+ Countries 90+ Lighthouse
Mar 2024 Wanderers Travel Co

Wanderers Travel Co - Multi-Store Ecosystem

Redesigned and maintained four international Shopify Plus stores using a unified codebase, c…

Shopify Plus Checkout UI Extensions Shopify Functions Shopify Remix +9
Jun 2023 Vine Apparel

Vine Apparel - Shopify 2.0 Migration & Custom Theme Development

Complete Shopify theme migration from legacy architecture to Shopify 2.0 with custom Liquid …

Shopify 2.0 Liquid Templating JSON Templates Section Rendering API +7
Aug 2023 Wearwellow

Wearwellow - Custom Shopify 2.0 Store

Built a high-performance, fully customized Shopify 2.0 store from the ground up, focusing on…

Shopify 2.0 Liquid Templating JSON Templates Shopify Ajax API +6
Nov 2023 Shady Rays

Shady Rays - Shopify 2.0 Migration & Heavy Customization

Led the migration from legacy Shopify theme to 2.0 architecture with extensive customization…

Shopify 2.0 Liquid Templating JSON Templates Shopify Ajax API +6
Sep 2022 Neoballs

Neoballs - Engaging Product Showcase

Created an engaging and functional Shopify store that showcases magnetic products through in…

Shopify Liquid Templating Shopify Ajax API Intersection Observer API +4
May 2022 Shoe Freaks

Shoe Freaks - Completely Custom Theme from PSD

Designed and developed a fully custom Shopify theme from Photoshop designs, emphasizing mode…

Shopify Liquid Templating Shopify Ajax API JavaScript ES6+ +5
Jul 2025 Zesty Paws

Zesty Paws - UI Enhancements & Custom Features

Enhanced user experience and implemented custom features using Shopify metafields and metaob…

Shopify Liquid Templating Metafields & Metaobjects Section Rendering API +4
Jun 2025 Ethique

Ethique - Sustainable Beauty Store Enhancements

Improved UI/UX and implemented custom sustainability features using metafields for an eco-fr…

Shopify Liquid Templating Metafields & Metaobjects Section Rendering API +5
Aug 2025 Carve Designs

Carve Designs - Women's Apparel Store Optimization

Enhanced shopping experience with UI improvements, bug fixes, and custom sizing features usi…

Shopify Liquid Templating Metafields & Metaobjects Shopify Ajax API +4
Sep 2025 Supergoop!

Supergoop! - Premium Suncare Store Enhancement

Elevated user experience with UI refinements, bug resolutions, and SPF education features us…

Shopify Liquid Templating Metafields & Metaobjects Section Rendering API +5
Aug 2025 Therabody

Therabody - Global Health & Wellness Shopify Store

Senior developer on therabody.com — a globally recognised health & wellness brand — deli…

Shopify 2.0 Liquid Templating JSON Templates Section Rendering API +7
Returns & Exchange App - Multi-Store Shopify Solution Shopify App
Jun 2023 Wanderers Travel Co

Returns & Exchange App - Multi-Store Shopify Solution

Built a comprehensive multi-store returns and exchange management app for Wanderers Travel C…

Laravel PHP React.js MySQL +8
Customer Cohort Tagging - Automated Segmentation App Shopify App
Sep 2023 Confidential Client

Customer Cohort Tagging - Automated Segmentation App

Developed an intelligent Shopify app that automatically tags customers based on purchase his…

Laravel PHP React.js MySQL +7
Multi-Store Product & Order Sync Connector Shopify App
Dec 2025 Firebrand Digital

Multi-Store Product & Order Sync Connector

Engineered a production-grade bi-directional product and order sync connector between multip…

Remix TypeScript Prisma ORM Shopify Admin GraphQL API +8
Shopify-NetSuite Sales & Refund Report Connector Shopify App
Oct 2025 Firebrand Digital

Shopify-NetSuite Sales & Refund Report Connector

Built a Shopify app that automates daily sales and refund report generation per SKU for NetS…

Remix TypeScript Prisma ORM Shopify Orders API +6
Subscription Management App — Shopify + Stripe Shopify App
Dec 2018 Vowel Web

Subscription Management App — Shopify + Stripe

Built a custom Shopify subscription app in 2018 — before Shopify's native subscription API…

Laravel PHP Stripe Subscriptions API Shopify Order API +5
Checkout UI Extensions - Custom Checkout Experience Shopify Checkout Extensions
Jan 2024 Wanderers Travel Co

Checkout UI Extensions - Custom Checkout Experience

Led the migration from checkout.liquid to Checkout UI Extensions and Shopify Functions for a…

Checkout UI Extensions Shopify Functions (Rust) React.js Admin GraphQL API +7
Script Editor to Shopify Functions Migration Shopify Checkout Extensions
Jun 2025 Firebrand Digital

Script Editor to Shopify Functions Migration

Led end-to-end migration from legacy Shopify Script Editor to modern Shopify Functions — r…

Shopify Functions (Wasm/JS) Checkout UI Extensions Remix TypeScript +6
Headless Shopify Hydrogen Storefront with ERP Integration Headless Commerce
Apr 2025 Firebrand Digital

Headless Shopify Hydrogen Storefront with ERP Integration

Architected and led development of a high-performance headless e-commerce storefront using S…

Shopify Hydrogen React.js Remix Shopify Oxygen +9
AI Agentic Developer Tooling Suite AI & Automation
Feb 2026 Personal Project

AI Agentic Developer Tooling Suite

Built a suite of production AI agents for day-to-day developer workflows — including a Git…

Python OpenAI API (GPT-4) Google Gemini API MCP Integrations +6
8y, 10m of Experience

My Resume

Shopify

Shopify Shopify 8y, 10m

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Shopify Liquid Shopify Liquid 8y, 10m

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Shopify Functions Shopify Functions 3y, 10m

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Shopify Checkout Extensions Shopify Checkout Extensions 3y, 10m

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Shopify App Development Shopify App Development 7y, 10m

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Shopify Theme Customization Shopify Theme Customization 8y, 10m

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Database

MySQL MySQL 8y, 10m

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PostgreSQL PostgreSQL 4y, 3m

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Prisma ORM Prisma ORM 3y, 3m

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Tools & Platforms

AWS AWS 5y, 3m

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GitHub GitHub 5y, 3m

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Figma Figma 5y, 3m

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Monday.com Monday.com 5y, 3m

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Bitbucket Bitbucket 7y, 3m

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Programming Languages

PHP PHP 8y, 3m

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JavaScript JavaScript 8y, 10m

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Node.js Node.js 4y, 3m

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Python Python 5y, 3m

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Ruby Ruby 5y, 3m

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Frontend

HTML HTML 8y, 10m

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CSS CSS 8y, 10m

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Bootstrap Bootstrap 8y, 10m

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jQuery jQuery 8y, 10m

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npm npm 6y, 3m

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Frameworks & Libraries

Laravel Laravel 8y, 3m

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React JS React JS 4y, 3m

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WordPress 9y, 3m

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Remix Remix 3y, 3m

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Codeigniter Codeigniter 9y, 3m

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2010 - 2017

Education

Bachelor of Engineering in Electronic & Telecommunication

Anjuman College of Engineering & Technology, Nagpur, Maharashtra (2014 - 2017)
7.8/10

Diploma in Electronic Engineering

Dr. Panjabrao Deshmukh Polytechnic, Amravati, Maharashtra (2011 - 2014)
75.49/100

SSC in Secondary School Certificate

Taj K.G English High School, Akola (2010 - 2011)
85.27/100
2017 - Present

Work Experience

Senior Shopify Developer

Artiple Web | Nagpur, Maharashtra Contract (2025 - Present)
Current

Leading Shopify development projects with focus on custom apps and checkout extensions.

  • Led multiple end-to-end Shopify development projects, from planning to deployment.
  • Expert in custom Shopify apps, including webhook handling, queue jobs, and high-traffic optimization.
  • Specialized in Shopify Checkout Extensions, improving conversion, UX, and merchant workflows.
  • Built scalable, performance-optimized solutions for fast-growing eCommerce brands.
  • Proficient in Liquid, React, Laravel, and Shopify APIs, enabling deep platform customization.
  • Experience handling high Shopify webhook volumes (50+ orders/min) with robust backend architecture.
  • Improved theme performance and user experience through advanced JavaScript and Shopify theme optimization.
  • Delivered merchant-friendly tools for product management, analytics, and automation.

Senior Shopify Developer

Firebrand Digital | Sydney, NSW 2066, AU Full-time (2021 - Present)
Current

Leading Shopify development projects with focus on custom apps and checkout extensions.

  • Built a Returns Booking App using Laravel, Shopify API, and React.js, processing 1,000+ return requests daily.
  • Developed Shopify Checkout UI Extensions for custom shipping rates, conditional payment methods, upsells, and promotional banners.
  • Created Shopify Functions apps with Remix for automated discount codes and "Buy X, Get Y" promotions.
  • Implemented Cart Transformation API for dynamic product bundling, enhancing average order value.
  • Built a custom Address Validation Checkout Extension to reduce failed deliveries.
  • Migrated a legacy Shopify theme to Online Store 2.0, resulting in improved UI/UX and faster page loads.
  • Managed and optimized two Shopify stores (bags & apparel), improving conversion rates and user experience.

Shopify Developer

Altius | Vashi, Navi Mumbai - 400705 Full-time (2019 - 2020)
1 year

Developed multiple Shopify e-commerce stores and custom integrations.

  • Built multiple Shopify apparel e-commerce stores with theme-based filtering using JSON & JavaScript, and displayed color variants as individual products on collection pages.
  • Developed a subscription-based WordPress website with Stripe recurring payments fully integrated for seamless user billing.
  • Redesigned a Magento 2.0 e-commerce platform, streamlining product navigation and improving performance for large catalog browsing.

Web Developer

Vowel Web | Nagpur - 440030 Full-time (2017 - 2018)
1 year

Developed custom Shopify apps and WordPress plugins.

  • Customized Shopify and WordPress themes to enhance user experience and improve UI consistency.
  • Developed multiple custom Shopify apps including Product Image Customizer, Payment Plan App, Promo App, and Post-Upsell App.
  • Built Product Image Customizer (Laravel, Shopify API, PHP) – Enabled merchants to add custom prints to products and auto-generate SKUs.
  • Created Payment Plan App (Stripe, Shopify) – Allowed flexible, installment-based payments for customers.
  • Developed Promo App – Automated discount logic and promotional campaigns within the storefront.
  • Built Post-Upsell App – Added post-purchase upsell offers, increasing average order value (AOV).
  • Built a WooCommerce Product Filter Plugin for WordPress, significantly improving product discoverability and user engagement.
Global Brands I've Built For

Trusted By

Designed, built, and optimized Shopify storefronts for 15+ global brands across apparel, wellness, travel, beauty, and lifestyle — delivering 90+ Lighthouse scores across the board.

Therabody

Senior Developer

Health & Wellness

Shopify 2.0 Performance Global
therabody.com

Wanderers Travel Co

Senior Developer

Travel & Lifestyle

4 Regional Stores Shopify 2.0 Multi-store
wandererstravelco.com

Shady Rays

Lead Developer

Eyewear

Shopify 2.0 Migration Custom Theme
shadyrays.com

Supergoop

Developer

Premium Suncare

UI Enhancements Performance
supergoop.com

Vine Apparel

Lead Developer

Fashion Apparel

Built from Scratch 1.0 → 2.0 Migration AJAX Filtering
vineapparel.com

Wearwellow

Lead Developer

Fashion

Shopify 2.0 Mobile-first Built from Scratch
wearwellow.com

Zesty Paws

Developer

Pet Wellness

Custom Features Shopify 2.0
zestypaws.com

Ethique

Developer

Sustainable Beauty

Store Enhancements Sustainability
ethique.com

Carve Designs

Developer

Women's Apparel

Performance Optimization
carvedesigns.com

Shoe Freaks

Associate Developer

Footwear

Fully Custom Theme PSD to Shopify
shoefreaks.com

Neoballs

Associate Developer

Sports & Recreation

Product Showcase Custom Interactions
neoballs.com
Contact

Contact With Me

Sultan Ahmad

Sultan Ahmad

I am available for freelance work. Connect with me via and call in to my account.

Phone: +91-9623858756 Email: contact@sultanahmad.in
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