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Engineering platforms. Scaling commerce.

I design and build full-stack platforms, SaaS products,
and ecommerce systems that scale with real users and real revenue.

Shopify · E-commerce Development · Next.js · React · Node.js · PostgreSQL · AWS · Docker

The Four Engineering Pillars

Every product I build follows these principles to ensure scalability, performance, and long-term growth.

ENGINEERING

Core Engineering Capabilities

FRONTEND frontend

Frontend Systems

Next.js · React · TypeScript

BACKEND backend

Backend Development

Node.js · NestJS · PostgreSQL

API API engineering

API Engineering

Scalable REST & GraphQL

SECURITY Authentication systems

Authentication Systems

JWT · OAuth · Secure sessions

INFRASTRUCTURE Cloud infrastructure

Cloud Infrastructure

AWS · Docker · CI/CD

SAAS Multi-tenant SaaS

Multi-Tenant SaaS Architecture

Tenant isolation · Shared infrastructure

ARCHITECTURE Headless architecture

Headless Architecture

Decoupled frontend & backend

ARCHITECTURE Microservices design

Microservices Design

Service separation · Communication layers

REAL-TIME Real-time systems

Real-Time Systems

WebSockets · Live updates

PERFORMANCE Performance engineering

Performance Engineering

Optimized load & response time

DATABASE Database architecture

Database Architecture

Schema design · Indexing · Query optimization

CACHING Caching systems

Caching Systems

Redis · In-memory caching · Edge caching

WORKERS Background jobs

Background Jobs

Queues · Workers · Scheduled tasks

EVENTS Event-driven architecture

Event-Driven Architecture

Webhooks · Message brokers · Async systems

PAYMENTS Payment gateway integration

Payment Gateway Integration

Stripe · PayPal · Subscriptions · Webhooks

COMMERCE

E-Commerce Capabilities

STOREFRONT store-front

Storefront Development

Shopify · Hydrogen · Liquid · React

CRO cro

Conversion Rate Optimization

A/B Testing · Heatmaps · Analytics

HEADLESS headless-commerce

Headless Commerce

Next.js · Storefront API · GraphQL

CART cart-checkout-sys

Cart & Checkout Systems

Shopify Checkout · Stripe · Webhooks

PAYMENTS payment-integration-system

Payment Gateway Integration

Stripe · PayPal · Apple Pay · Klarna

SUBSCRIPTIONS subscription-commerce

Subscription Commerce

Recharge · Stripe Billing · Webhooks

PRODUCT product-catalog-systems

Product & Catalog Systems

Shopify Admin API · GraphQL · Node.js

SEARCH search-discovery

Search & Discovery

Algolia · Elasticsearch · Filters

PERSONALIZATION personalized-shopping-experience

Personalized Shopping Experience

Shopify Scripts · APIs · Edge Logic

PERFORMANCE ecommerce-performance-optimization

Ecommerce Performance Optimization

Next.js · CDN · Edge caching

ANALYTICS conversion-tracking

Conversion Tracking & Analytics

GA4 · Meta Pixel · Server Tracking

MARKETING marketing

Marketing Automation

Klaviyo · Webhooks · Event APIs

INVENTORY inventory-and-order-system

Inventory & Order Systems

Shopify Admin API · Webhooks

SHIPPING inventory-order-systems

Shipping & Fulfillment

ShipStation · EasyPost · APIs

MARKETPLACES shipping-fullfilment

Marketplace Integration

Amazon · eBay · Walmart APIs

TAX tax-compliance

Tax & Compliance Systems

Avalara · TaxJar · Shopify Tax

Engineering Playbooks

Technical engineering insights on scaling applications, ecommerce architecture, checkout systems, and performance optimization.

Tech Insights & Industry Deep Dives

I break down major technology shifts and explain what they mean for real businesses. From Shopify collaborations to AI integrations, I focus on practical impact — not hype.

01. Shopify Lovable Collaboration

02. Shopify OpenAI Collaboration

03. Web Accessibility

What Clients Say

Managing Director
Nicolae Ciobota
CEO
Jonathan Ruben
Animal Tracks Production

"Had the privilege of collaborating with Munib on a complex Next.js and Dato CMS project, and I must say his skills are truly exceptional."

Flirt OS

"Your body was made to move. With Healf, I’m excited to show you how powerful and resilient you can become when movement is a part of your daily ritual."

Trusted by clients on Upwork and LinkedIn

This feedback comes from real clients I’ve worked with on real projects. From startups to growing teams, these reviews reflect how I communicate, build, and deliver.

5.0 average client rating · Verified reviews from Upwork and Linkedin

5.0 Client Rating Verified Reviews Upwork & LinkedIn
senzai Adrian Colaco
Senior Project Manager @ Senzai

Working with Munib Qazi has been an excellent experience. He took the time to understand project requirements thoroghly and delivered high-quality work. He was accessible to us whenever we needed him and he always offered a better solution to our issues or requests. That's what you get with Munib, a partner that could have easily just done what we asked, instead he took the time to evaluate our requests demonstrating a sense of ownership which is refreshing to find in an outsourced resource. He was flexible to our needs and worked well with our team, even going the extra mile to deep dive and solve problems peripheral to the scope of work to ensure the project moved ahead. We at Senzai will continue to offer him first right of refusal for all our Front End work.

linkedin
alpha Nicole Shariati
CTO @ Alpha Goats

Munib took on a project with a very tight timeline and executed very well. He was very communicative and made sure everything is done within the deadlines.

upwork
flirt Jonathan Ruben
Founder @ flirt.os

Munib was fantastic. Turned my very basic website to something really beautiful and professional. Will definitely hire him for front end work again.

upwork
Covestro Manuel Gil Valverde
Building GenAI Solutions @ Covestro

I engaged Munib's services as an independent front-end consultant to develop a critical feature for my startup product using NextJS, React, and Tailwind. He was an excellent choice. Munib has the perfect combination of skills for a consultant. He fully proved himself an expert in the technical aspects, quickly familiarizing himself with the existing codebase and writing high-quality code in a timely fashion. He consistently demonstrated professionalism in his delivery and was very customer-oriented, showing great intuition in building something that I truly needed. Furthermore, he accepted and implemented every piece of feedback I provided very positively. It was a pleasure working with him, and I have no doubt that I would engage his services again if the opportunity arose.

linkedin
daniel Daniel loh
Director @ EPIC Travel

Munib excelled in developing a Next.js / React.js function. He not only met the deadline but also went above and beyond to ensure successful app delivery. In our project, even though the API errors originated elsewhere, Munib patiently troubleshooted them, demonstrating his deep knowledge and competence. His exceptional problem-solving skills and overall positive attitude make him a highly recommended developer.

linkedin
onion Kelvin Lee
Co-Founder @ Onion Creative

Munib is a very skilled and professional engineer. His communication is very good and he gets the job done without many issue issues or guidance.

upwork
jato Nic Tiberius Ciobota
AV Production Specialist

I’ve worked closely with Munib on a complex, deadline-driven project and found him to be a highly reliable and capable developer. He delivered a solid Dato CMS + GraphQL setup, implemented Tailwind cleanly, and supported AWS streaming workflows with a clear understanding of performance and real-world delivery. Calm, communicative, and solutions-focused, Munib is easy to trust on critical paths and a pleasure to work with. I’d happily work with him again and recommend him without hesitation.

linkedin
meka Mekaknepley
Founder @ Reup

Working with Munib Qazi has been an excellent experience. He took the time to understand project requirements thoroughly and delivered high-quality work.

upwork