JavaScript Fundamentals
Event LoopCall StackExecution ContextClosuresHoistingScope Chain
Senior Full Stack JavaScript Developer
Muhammad Zubair Rizwan
Principal Consultant · Technical Educator · Architecture Enthusiast
Building Enterprise Applications & Teaching Software Engineering Through Interactive Learning Experiences.
9+ years of professional engineering experience delivering high-performance commerce platforms, modern web applications, and visual learning systems with JavaScript, React, Next.js, TypeScript, and Dynamics 365.
Concepts Explained
25+
D365
Enterprise Exp.
9+ Years
Mattress Firm
Affirm BNPL
Progressive Leasing
Dynamics 365 Commerce
Next.js 15
Headless Architecture
Apple Pay Express
PayPal Integration
Salesforce Migration
CRT API Integrations
Synchrony Data Share
Datadog Monitoring
Vercel Deployment
Enterprise React
MERN Stack
Mattress Firm
Affirm BNPL
Progressive Leasing
Dynamics 365 Commerce
Next.js 15
Headless Architecture
Apple Pay Express
PayPal Integration
Salesforce Migration
CRT API Integrations
Synchrony Data Share
Datadog Monitoring
Vercel Deployment
Enterprise React
MERN Stack
Mattress Firm
Affirm BNPL
Progressive Leasing
Dynamics 365 Commerce
Next.js 15
Headless Architecture
Apple Pay Express
PayPal Integration
Salesforce Migration
CRT API Integrations
Synchrony Data Share
Datadog Monitoring
Vercel Deployment
Enterprise React
MERN Stack
9+
Years Experience
50+
Projects Delivered
25+
Concepts Explained
20+
Technologies Mastered
Active
Mentoring & Knowledge Sharing
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Developer Learning Hub
Interactive engineering lessons built from real enterprise experience.
I teach JavaScript runtime behavior, frontend architecture, performance optimization, system design, and modern web development through visual simulations instead of static notes.
9+
Years Experience
25+
Concepts Explained
10+
Technology Domains
Thousands
Enterprise Users Impacted
Performance Optimization
DebouncingThrottlingMemoizationLazy LoadingCode Splitting
React & Next.js
Virtual DOMReconciliationReact RenderingServer ComponentsHydration
System Design
CachingCDNLoad BalancingMicroservicesMessage Queues
Advanced Engineering
Design PatternsAuthenticationSecurityScalabilityArchitecture Decisions
Built for visual learners
Explore interactive lessons that explain real-world engineering concepts with runnable examples, animations, and interview-ready explanations.
Career Journey
Professional Experience
Nine years of hands-on leadership across enterprise commerce, payments, platform modernization, and high-performing customer journeys.
2021 – Present
Systems Limited
Principal Consultant
Jan 2025 – Present
- Launched Affirm Buy Now, Pay Later in May 2025; it became the third-highest payment method by order volume.
- Shipped warranty extensions, cart cross-sell, and streamlined customer and delivery selection to improve the purchase journey.
- Improved Buy Synchrony data sharing and optimized promo-code application for more reliable, low-friction checkout flows.
- Introduced Datadog API monitoring and alerting, enabling proactive production issue detection.
- Drive peer reviews, front-end architecture decisions, developer onboarding, and technical interviews.
Senior Consultant
2023 – 2025
- Launched PayPal Express and Apple Pay Express using customized iframe payment modules and order-attribute handling.
- Integrated Progressive Leasing from cart messaging through the payment flow, expanding financing options for shoppers.
- Led the Mattress Firm buy-side migration to Next.js 14, covering cart, checkout, customer information, delivery, payments, and express checkout.
- Completed the headless rollout in early 2025 via Edgio, then led the production deployment migration to Vercel.
Consultant Dynamics Commerce
2021 – 2023
- Supported the Mattress Firm Salesforce-to-Dynamics 365 Commerce migration, moving the storefront front end to React.
- Rebuilt PLP, PDP, and home experiences by extending Dynamics views, overriding data actions, and improving CMS reusability.
- Implemented cart through order confirmation, integrating customer, delivery, and payment experiences with CRT APIs.
- Delivered complex front-end customizations using business rules, BPFs, and workflows while mentoring junior developers.
2019 – 2021
OneClout
MERN Stack Developer
2019 – 2021
- Built and maintained responsive React and Next.js applications with a focus on reliable user experiences.
- Used Redux for predictable state management and optimized MySQL and PostgreSQL queries for application performance.
- Integrated external APIs and payment gateways, and connected Node.js services with MongoDB and MySQL data stores.
- Partnered with cross-functional teams, reviewed code, and contributed to mentoring and front-end architecture decisions.
2018 – 2019
Hashlogics
MERN Stack Developer
2018 – 2019
- Developed full-stack MERN applications for startups, including attendance, land-record, and e-commerce products.
- Created intuitive React interfaces and built the APIs and database foundations needed to support them.
- Applied practical UI/UX principles to deliver responsive, user-friendly product experiences.
Selected Work
Enterprise Case Study Vault
Selected enterprise engagements across commerce replatforming, checkout modernization, and payment innovation.
Lead Frontend Developer · 2024–2025
Mattress Firm Headless Commerce Migration
Led the buy-side migration from Microsoft Dynamics 365 Commerce to a Next.js 14 storefront—rebuilding cart, checkout, customer information, delivery, payments, and express checkout for a production retail platform.
Scope
End-to-end checkout
Launch
Edgio → Vercel
Next.js 14D365 CommerceHeadlessEdgioVercel
Strategic Integration Lead · 2023–2025
Payments & Financing Modernization
Delivered a portfolio of revenue-focused payment experiences: Affirm Buy Now, Pay Later, Progressive Leasing, PayPal Express, and Apple Pay Express—making checkout faster and giving customers more ways to pay.
Affirm impact
#3 by order volume
Delivery
Production launches
AffirmProgressive LeasingPayPalApple PayCheckout
Dynamics 365 Commerce Consultant · 2021–2023
Dynamics 365 Commerce Replatforming
Modernized a large retail storefront during its Salesforce-to-Dynamics 365 Commerce migration. Rebuilt PLP, PDP, home, and the complete checkout flow in React, with reusable CMS capabilities and CRT API integrations.
Modules
Browse to order confirmation
Approach
Reusable commerce UI
Dynamics 365ReactCRT APIsCommerce CMS
Showing 1–3 of 6 case studies
Tech Stack Matrix
Strategic Tech Expertise
A specialized toolkit optimized for delivering enterprise-grade digital experiences.
Frontend Excellence
React.js
Next.js
TypeScript
JavaScript ES6+
Redux
React Query
Tailwind CSS
Ant Design
Framer Motion
Backend & APIs
Node.js
Express.js
REST APIs
GraphQL
CRT API
Microservices
Data Strategy
PostgreSQL
MongoDB
MySQL
Redis
Database Optimization
Digital Commerce
Dynamics 365 Commerce
Headless Commerce
Salesforce Migration
Adobe Commerce
Checkout Optimization
Payment Systems
Affirm Integration
PayPal Express
Apple Pay
Progressive Leasing
Synchrony
Security Compliance
Cloud & DevSecOps
Vercel
Datadog Monitoring
GitHub Actions
CI/CD Pipelines
Azure DevOps
Performance Auditing
Let's Connect
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Strategic Consultation
Looking to scale your digital commerce operations or migrate to Dynamics 365? Let's discuss how we can build high-performance experiences for your users.
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