Sanwar Hussain

Senior MERN Stack Engineer · AI Systems Builder

About Me

sanwar hussain - ai software engineer

Senior Full Stack Engineer with 6+ years of experience building production-grade web, mobile, and backend systems using the MERN stack. I specialize in performance-critical React and Next.js applications, scalable Node.js services, and clean, maintainable architecture. Over the past year, my focus has shifted toward applied AI systems — designing Retrieval-Augmented Generation (RAG) pipelines, orchestrating multi-step LLM workflows using LangChain and LangGraph, and integrating Python-based AI services into real-world products. Currently, I do freelance and fullstack consulting, mostly indulged in genAI workflow.

My Projects

Featured
AI Video Ad Generation Platform

Building a distributed AI system that automatically generates cinematic 30-second video advertisements end-to-end. You can try the mvp version here

LangGraph
LangChain
TypeScript
Node.js
Python
FastAPI
Docker
Kubernetes
GPU Compute

My Expertise

Web Application Engineering
High-performance React & Next.js applications
  • Pixel-perfect, responsive UIs across all devices
  • Strict adherence to design systems and shared mockups
  • Optimized rendering, fast load times, and minimal bundles
  • Scalable, maintainable architecture by default
  • Defensive coding practices with strong error handling
Cross-Platform Mobile Development
Single codebase Android & iOS apps
  • React Native apps for Android and iOS
  • Near-native performance and smooth UX
  • Reusable, modular component architecture
  • Reduced development cost and time-to-market
  • Production-ready release workflows
Shopify Engineering
High-conversion storefronts and custom commerce
  • Custom Shopify themes and storefronts
  • Advanced Liquid and storefront customization
  • Performance audits and speed optimization
  • Conversion-focused checkout optimization
  • Custom apps and GraphQL integrations
Backend & API Engineering
Scalable Node.js services and data systems
  • REST and GraphQL APIs for web and mobile
  • Horizontally scalable Node.js services
  • MongoDB schema design and query optimization
  • High-availability production deployments

Work Experience

Senior Full-Stack & AI Engineer

Freelance
Jun 2024 - Present

MERN Stack Developer

Shorewise
Feb 2023 - May 2024

Frontend Developer - Shopify

Marmeto
Oct 2021 - Nov 2022

Software Application Developer (Full Stack)

Appradius
Dec 2020 - Apr 2021

Frontend Engineer

Slurpalicious
Jul 2019 - Jul 2020

My Skills

React
Next.js
Node.js
Express.js
MongoDB
TypeScript
JavaScript (ES6+)
Tailwind CSS
GraphQL
REST APIs
Docker
Git
React Native
Shopify
Liquid
LangChain
LangGraph
Python
FastAPI

Get In Touch

I'm always open to discussing new projects, creative ideas, or opportunities to be part of an ambitious vision.