Hi, I'm
Muhammad Zaeem Khan
Full-Stack & AI Engineer
15+ years shipping production software — AI-powered products, SaaS platforms, enterprise backends, and mobile apps
About Me
I'm a full-stack and mobile engineer with 15+ years of experience shipping production software. I build AI-powered products, SaaS platforms, mobile apps, and enterprise backends for fintech, healthcare, e-commerce, and loyalty sectors.
Currently focused on Agentic AI, RAG systems, MCP integration, and LangChain/LangGraph pipelines — combining 15 years of full-stack depth with the latest in AI engineering. From API design to production deployment — I deliver end-to-end.
AI & LLM
RAG, Agentic AI, MCP, LangChain, n8n
Full Stack
.NET, Node.js, NestJS, React, Next.js
35+ Projects Shipped
Production-ready, scalable, secure
Mobile
Android, iOS, Flutter, KMP, React Native
What I Do
End-to-end engineering services for startups, enterprises, and everything in between
AI & LLM Engineering
Agentic AI systems, RAG document search, MCP tool integration, and LLM-powered automation. From OpenAI/Claude/Gemini API integration to production-ready AI features using LangChain and LangGraph.
SaaS Platforms & Dashboards
Multi-tenant SaaS applications with role-based access, real-time analytics, Stripe billing, and admin dashboards. Built for scale from day one.
Mobile App Development
Native and cross-platform mobile apps from concept to App Store and Play Store launch. Offline-first, performant, and polished.
AI Automation & Workflows
Automated pipelines with n8n, AI-powered content generation, data processing workflows, and intelligent integrations that replace manual work.
API & Backend Architecture
RESTful APIs, microservices, event-driven systems, and third-party integrations. Designed for scale, reliability, and maintainability.
Full-Stack Web & Extensions
Modern web apps, enterprise platforms, and Chrome extensions. From React/Next.js frontends to Node.js/.NET backends and Manifest V3 browser tools.
Industries I Work In
Deep domain expertise across high-value verticals — not just code, but context
Fintech & Trading
8 shipped apps
Trading platforms, position sizing tools, currency analytics, market session trackers, and subscription-based premium apps.
Healthcare
1 enterprise platform
HIPAA-minded patient engagement platforms with ML-powered pose detection, therapy scheduling, and clinician oversight.
E-Commerce & Retail
6 platforms
White-label grocery platforms, consumer storefronts, admin backoffices, and multi-tenant catalog management systems.
Loyalty & Rewards
5 apps + backend
Omnichannel loyalty ecosystems with POS terminals, consumer apps, military programs, and microservices backends.
Enterprise SaaS
4 platforms
Multi-tenant dashboards, role-based access, real-time analytics, reporting, and admin consoles for operations teams.
AI & Automation
Active focus area
Agentic AI systems, RAG document search, MCP tool integration, LangChain/LangGraph pipelines, and workflow automation with n8n.
Projects
40+ production projects shipped across multiple platforms
GrocerKey — White-Label Web Storefronts
Enterprise white-label SaaS platform powering grocery storefronts for national retailers including Fareway, Kowalski's, and Stew Leonard's — with SSO authentication, Stripe payments, and LaunchDarkly feature flags for phased rollouts.
Web (TypeScript + Aurelia + React)
ExtraMiles — Admin Backoffice
Multi-tenant SaaS admin dashboard for managing a loyalty program — user management, transaction monitoring, real-time analytics, role-based access control, and automated reporting with PDF/Excel export.
Web (Next.js + React)
Pyriolo — Payment Gateway Integration
Integrated Heartland payment gateway into pizza delivery service websites including Marco's Pizza, Greek's Pizzeria, and Aver's Pizza. Enabled secure online payment processing for restaurant chains.
Backend (C# .NET)
GrocerKey — Customer Web API
Customer-facing REST API powering GrocerKey's multi-retailer grocery storefronts — handling product catalog, search, pricing, promotions, cart/checkout, order tracking, and loyalty integration for millions of shoppers.
Backend (C# .NET)
WinRest POS — Restaurant & Hospitality
Enterprise-grade point-of-sale solution for the hospitality sector with secure real-time transactions.
POS Platform
Daraz Smart Shopper — Shopping Assistant Extension
AI-powered Chrome extension analyzing 60+ data points per product to generate deal scores, detect fake reviews, track price history, and predict price manipulation — with cloud sync via Supabase Edge Functions.
Chrome Extension
Google Maps Place Ranker — SEO Tool Extension
Chrome extension that silently collects place data from Google Maps search results as you scroll, displaying them in a ranked, filterable panel with smart sorting and CSV export for SEO and market research.
Chrome Extension
Upwork Job Insights — Freelancer Extension
Privacy-first Chrome extension that surfaces hidden client quality data on Upwork job listings — color-coded badges for client spend, rating, review distribution, and estimated hidden reviews — zero external API calls, all analysis runs locally.
Chrome Extension
Primary Sales Data Management System
Desktop enterprise application for managing primary sales data flows, accounting, reporting, and operational accuracy.
Desktop (C# .NET)
Custom GPTs
AI assistants I've built on OpenAI's GPT platform
Real-Time News Intelligence Brief Generator
Produces category-wise intelligence briefs for any topic across two time windows (24h and 7d). Separates positive and negative developments into distinct tables across 15 standardized categories.
Community Multi-Perspective Opinion Analyzer
Synthesizes Reddit discourse into comprehensive, bias-aware reports. Maps 6+ distinct community perspectives with their core beliefs, arguments, and criticism patterns.
Islamic Beliefs Explained with References
Compares opinions of classical Islamic Imams and schools before presenting their evidences. Designed for students, educators, and researchers seeking neutral, evidence-based analysis.
Quran Hadith Research Prompt
A comprehensive Islamic studies research engine that produces full analytical reports for any Qur'anic ayah or hadith reference.
Tafsir Synthesis — Multi-Source Exegesis
Synthesizes up to 14 classical and popular tafsir sources into a single, deduplicated, point-by-point explanation of any Qur'anic verse — in simple English with a 15-word sentence limit.
Qur'an & Hadith Maximum Recall Research Assistant
A structured Islamic textual research system that retrieves the maximum relevant evidences from the Qur'an and Hadith collections for any given topic.
Tech Stack
Technologies and tools I work with daily
AI & LLM
OpenAI 
Claude 
LangChain
LangGraph 
Gemini 
n8n Languages
TypeScript 
JavaScript 
C# 
Java 
Kotlin 
Swift 
Dart 
Python Backend
.NET 
Node.js 
NestJS 
Express 
GraphQL 
Kafka 
RabbitMQ Frontend
React 
Next.js 
Tailwind Mobile
Flutter
React Native 
Jetpack Compose
SwiftUI Databases
PostgreSQL 
SQL Server 
SQLite 
MongoDB 
Redis Cloud & Services
Firebase 
Supabase 
AWS 
Azure Tools & DevOps
Git 
Android Studio 
Xcode 
VS Code 
Postman 
Figma How I Work
Transparent hourly engagement with daily updates — whether it's an app, a platform, or a backend system
Discovery Call
30 minI ask the questions most developers skip. What's the real problem? How do similar products solve it? What's the wrong approach that will cost you later? I work with clients who have mission-critical projects — not hobby builds. This call determines if we're the right fit for each other.
Architecture First
1-2 daysI start from scratch, bottom to top. No shortcuts, no copy-paste templates, no 'we'll fix it later.' I'll also flag tech decisions that could go wrong early — before they become expensive.
Build & Ship Daily
OngoingEvery task gets done properly. You get video or screenshot updates as I go — not at the end of a sprint, but as things happen. If something needs your input, you'll see it immediately. Challenge any developer to deliver faster at this quality.
Production-Grade QA
ContinuousEvery feature is tested before it reaches you. Performance optimized, crash-free, scalable. I don't ship 'good enough' — I ship production-ready. These are non-negotiable — your users and your systems won't forgive shortcuts, and neither will I.
Technical Leadership
Long-termI guide you on what successful products do — whether it's a mobile app, a web platform, or a backend system. I flag bad decisions before they happen and push back when something doesn't make sense. Wrong tech stack? I'll tell you before it costs you. I've shipped 35+ projects — I know where things go wrong.
Client Reviews
What clients say after working with me
"Great experience working. Very professional, delivered tasks on time, and communicated clearly throughout the project. Highly recommended."
Database Expert — MongoDB + Flutter Sync & Local Storage
"Always delivers excellent results. On time and on budget. We only trust our development projects to Zaeem!"
WinRest Integration to Moneris GO Pinpad
Experience
15+ years of career progression — from junior developer to technical leader
Full-Stack & AI Engineer
2023 – PresentFreelance / Upwork
Building AI-powered products, SaaS platforms, mobile apps, and enterprise backends for international clients. Flutter, React, .NET, NestJS, LLM integration.
Full Stack Developer
2022 – 2023GrocerKey (Point Pickup Technologies)
E-commerce platform for grocery retailers. Built order modification flows (EBT/credit/gift/tips), user targeting for phased rollouts, and performance optimization under peak traffic.
Team Lead / Tech Lead
2020 – 2022Atrule Technologies
Led a team building mobile apps (Flutter & Android), backend APIs (.NET), and nopCommerce e-commerce storefronts. Shipped 15+ apps to Play Store and App Store.
Senior Software Engineer
2017 – 2020CLEVIATECH
Built WinRest POS integrations (Uber Eats, Clover, Moneris, Flyt), Dialoct lawyer-client platform (Xamarin + Twilio VoIP), and payment gateway integrations.
Senior Software Engineer
2014 – 2017Pepsi Cola Bottler
Enterprise MIS for primary sales data management. Automated yearly closing processes, migrated business logic to stored procedures, and built HR salary management systems.
Junior Software Engineer
2012 – 2014Green Fin Technologies
Desktop and web application development using C# .NET and SQL Server.
Education
BS Computer Science
2006 – 2010COMSATS Institute of Information Technology
Islamabad, Pakistan
Speaking & Seminars
Guest speaker at 5 universities — sharing real-world engineering experience on AI, career paths, and the tech industry
University of Southern Punjab, Multan
usp.edu.pkTech Industry Career Counselling — Jinnah Auditorium. Topics: Future of Tech Careers, AI & Cybersecurity, Career Roadmaps, Skills Industry is Looking For.
AIR University Multan
Career in Tech — Mobile & Web Development
March 2021
Bahauddin Zakariya University
Career in Tech — Software Engineering Paths
March 2021
MNS University of Agriculture
Career in Tech — From University to Industry
March 2021
NFC Institute of Engineering & Technology
Career in Tech — Building Real-World Products
March 2021
Let's Work Together
Have a project in mind? Reach out through Upwork and let's discuss how I can help.