Muhammad Zaeem Khan

About Me

Clients & Products I've Worked On

Enterprise customers, US grocery retailers, restaurant chains, fintech companies. Remote delivery to US / UK / EU clients since 2011.

What I Do

End-to-end engineering services for startups, enterprises, and everything in between

Industries I Work In

Deep domain expertise across high-value verticals — not just code, but context

Projects

58+ 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)

TypeScript Aurelia React Node.js Express +5

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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)

Next.js React TypeScript TailwindCSS NextUI +5

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💻

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)

C# .NET Heartland SDK SQL Server Payment Gateway +1

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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)

C# .NET ASP.NET Core SQL Server Entity Framework +3

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WinRest POS — Restaurant & Hospitality

Enterprise-grade point-of-sale solution for the hospitality sector with secure real-time transactions.

📱 POS Platform

C# .NET Firebird DB OAuth 2.0 Uber Eats API +4

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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

JavaScript Chrome Manifest V3 Supabase SVG DOM APIs +1

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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

JavaScript Chrome Manifest V3 MutationObserver Chrome Storage API CSS +1

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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

JavaScript Chrome Manifest V3 MutationObserver Chrome Storage API CSS

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Primary Sales Data Management System

Desktop enterprise application for managing primary sales data flows, accounting, reporting, and operational accuracy.

📱 Desktop (C# .NET)

C# Windows Forms .NET SQL Server Azure

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ExtraMiles — Customer Frontend

Customer-facing web frontend for the ExtraMiles loyalty platform — product discovery, rewards browsing, partner offers, and account management built with Next.js 14 and React 18.

📱 Web (Next.js + React)

Next.js React TypeScript Redux Tailwind CSS +2

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ExtraMiles — Loyalty Microservices Backend

Distributed microservices backend powering the ExtraMiles loyalty ecosystem — 5 independent NestJS services handling API gateways, core business logic, customer management, and user authentication with MongoDB, Redis queues, and real-time WebSocket channels.

📱 Backend (NestJS Microservices)

NestJS Node.js MongoDB Redis Bull +6

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GrocerKey — E-Commerce Backend Services

Enterprise-scale microservices backend processing millions of grocery transactions — CQRS architecture with RabbitMQ event queues, ElasticSearch real-time indexing, Redis caching, and multi-tenant support across 10+ retailer configurations.

📱 Backend (C# .NET + Microservices)

C# .NET ASP.NET Core SQL Server Entity Framework +7

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GrocerKey — Store & Operations API

Store-facing operations API and background processing layer for GrocerKey — handling order fulfillment, inventory sync, picker integration, event logging, and scheduled data refresh across all retailer locations.

📱 Backend (C# .NET)

C# .NET ASP.NET Core SQL Server RabbitMQ +3

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Secure Check Deposit & Identity Verification

Secure desktop application for processing check deposits with automated identity verification through ID scanning, facial recognition, and thumbprint validation.

📱 Desktop (C# .NET)

C# Windows Forms .NET SQL Server Azure

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GrocerKey — Picker & Driver Fulfillment App

Enterprise grocery operations app for in-store pickers, sorters, and drivers supporting the full order lifecycle.

📱 Android

Kotlin Java Jetpack Compose XML DataBinding +13

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Pt Pal — Digital Therapy Companion

HIPAA-compliant mobile health platform with AI-powered pose detection, connecting patients with clinicians for digital therapy delivery. Features real-time exercise tracking via ML Kit, interactive prescriptions, biometric authentication, and encrypted data handling.

📱 Android & iOS

AndroidX RecyclerView ViewPager2 WorkManager BiometricPrompt +10

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AtCommerce — Admin App

Mobile-first back-office client for nopCommerce, giving real-time control over catalog, orders, customers, and commerce operations.

📱 Flutter (Android & iOS)

Flutter Dart GetX Dio shared_preferences +3

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AtCommerce — Store App

Consumer-facing storefront built on nopCommerce with product discovery, community engagement, full checkout, and post-purchase care.

📱 Flutter (Android & iOS)

Flutter Dart GetX Provider http +5

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Brain Equity — Trading Journal & Habit Coach

Holistic trading journal and discipline coach blending emotional check-ins, habit tracking, and portfolio notes.

📱 Kotlin Multiplatform (Android & iOS)

Kotlin Multiplatform Compose Coroutines Firebase Kotlin SDK RevenueCat KMP Room +1

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Kivora — Mental Fitness & Resilience for Traders

Daily mental-fitness and resilience companion designed for traders with mindfulness exercises and progress tracking.

📱 Kotlin Multiplatform (Android & iOS)

Kotlin Multiplatform Compose Room SQLDelight Coroutines Firebase Cloud Messaging +2

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Market Countdown — Times & News

Global market session countdown and economic news companion, providing real-time notifications, ad-free widgets, and clean countdown timers.

📱 Android & iOS

Jetpack Compose ViewModel WorkManager Retrofit OkHttp +8

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Market Opens — Global Trading Sessions

Real-time Forex market hours tracker with countdowns, timezone conversions, and tailored alerts.

📱 Flutter (Android & iOS)

Flutter Syncfusion Charts sqflite flutter_local_notifications Firebase Analytics +1

Play iOS View →

MarketBeats — Activity Monitor

Fintech mobile app for real-time Forex signal delivery — translates live market strength into visual 'beat' patterns, helping traders identify high-probability setups with push-driven alerts segmented by currency pair and session.

📱 Android & iOS

Jetpack Compose Coroutines Flow Retrofit OkHttp +7

Play iOS View →

STINU — Position Size Calculator

Professional-grade position sizing tool for forex, indices, commodities, and crypto with live market data and pip-level precision.

📱 Android & iOS

Kotlin Jetpack Navigation MPAndroidChart Firebase Remote Config Firebase Messaging +5

Play iOS View →

FX Meter — Currency Strength

Currency-strength analyzer focused on Daily and 4H timeframes, delivering heatmaps, historical trends, and momentum summaries.

📱 Android & iOS

Kotlin MPAndroidChart Room WorkManager Koin +6

Play iOS View →

Position Pal — Stocks & Index

Lightweight position sizing and stock search companion for NYSE, NASDAQ, and US indices.

📱 Flutter (Android & iOS)

Flutter GetX get_storage loader_overlay AdMob +1

Play iOS View →

Dialoct — Lawyer-Client Communication Platform

Secure lawyer-client platform combining communication, scheduling, and case management into one mobile-first solution. Enables lawyers to manage clients, exchange documents, log calls, track time, and streamline billing.

📱 Xamarin (Android & iOS) + ASP.NET

Xamarin XAML MVVM ASP.NET C# +5

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ExtraMiles — Consumer Loyalty App

Consumer-facing fintech loyalty app with wallet management, QR-based payments, rewards redemption, and multi-gateway payment integration (PayTabs + AirPay) — serving the Middle East market with full Arabic RTL support.

📱 Flutter (Android & iOS)

Flutter Dart GetX Firebase Crashlytics PayTabs +4

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Mo'Snacks — Food & Snack Delivery Platform

Baltimore-based food and snack delivery service connecting residents with healthier local options while supporting small restaurants and food creators. Cross-platform mobile app with seamless browsing, ordering, payments, and delivery tracking.

📱 Xamarin (Android & iOS) + ASP.NET Web API

Xamarin XAML MVVM ASP.NET C# +5

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📱

Firebase ML Vision — Xamarin Binding Library

Custom Xamarin binding for Google Firebase ML Vision library. Built because no official Xamarin support existed — decompiled the ML Kit library, identified dependencies, and generated C# bindings from Java code using Java Binding metadata.

📱 Xamarin Library (NuGet Package)

Xamarin C# Firebase ML Kit Java Binding NuGet +1

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Motorway Road Conditions Today

Travel safety app for Pakistani highways delivering real-time fog, weather, and road condition intelligence.

📱 Flutter (Android & iOS)

Flutter Dart GetX Dio GetStorage +7

Play iOS View →

Pakistan History Timeline

Bilingual history app curating Pakistan's key milestones into daily, weekly, and filterable timelines.

📱 Flutter (Android & iOS)

Flutter Dart GetX flutter_screenutil timeline_tile +7

Play iOS View →

Pakistan Petrol Price Today

Keeps Pakistani motorists updated with latest fuel prices while managing vehicles, fueling logs, and expenses.

📱 Flutter (Android & iOS)

Flutter GetX Dio SQLite shared_preferences +6

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Pakistani Brands — Fashion Discovery Hub

All Brands in One App — shopping companion centralizing top Pakistani fashion labels into a single scrollable hub.

📱 Flutter (Android, iOS, Web, Desktop)

Flutter Dart GetX Dio GetStorage +7

Play iOS View →

Currency Rates & Converter

Real-time currency conversion and market rates app for travellers, remitters, and traders.

📱 Flutter (Android & iOS)

Flutter Dart GetX Dio SharedPreferences +7

Play iOS View →

ThoughtDiary — Mental Wellness & CBT Journaling

Mental wellness and self-awareness app blending journaling, emotion tracking, and routine planning.

📱 React Native (Android & iOS)

React Native React 19 Redux Toolkit React Query MMKV +7

Play View →

Timezone Notify — Global Time Conversion & Reminders

Lightweight productivity app for distributed teams to track cities, pin timezones, and set cross-zone reminders and alarms.

📱 Android

Java RecyclerView ViewPager Material Components SharedPreferences +6

Play View →

What To Eat — Food Calories & Fitness

Calorie-tracking and nutrition app combining food discovery, calorie breakdowns, TDEE insights, and pedometer.

📱 Flutter (Android & iOS)

Flutter Dart GetX Dio GetStorage +6

Play View →

Moye Moye — Making Weather Fun

Playful weather app transforming forecasts into an entertaining, personality-driven feed.

📱 Flutter (Android, iOS, Web, Desktop)

Flutter Dart GetX GetStorage Dio +8

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ExtraMiles — POS & Merchant Apps

Specialized POS and digital vault payment applications for ExtraMiles merchants and partners, enabling secure payment processing, transaction management, and loyalty verification at the counter.

📱 Flutter (Android)

Flutter Dart GetX Socket.IO AES Encryption +3

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🤖

PakNews Bias Scanner — AI News Analysis

AI-powered news analysis platform that detects political bias in Pakistani news articles using ML models. Multi-platform app with automated RSS feed aggregation, ONNX-based bias classification, and real-time article clustering by political topic.

📱 Full-Stack (TypeScript + React Native)

TypeScript Fastify ONNX Runtime React Native Expo +3

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🤖

Virtual Try-On — AI Fashion Platform

Full-stack AI-powered virtual try-on platform for e-commerce — enabling customers to visualize clothing using image processing, with async task queues and real-time WebSocket updates.

📱 Full-Stack (FastAPI + Next.js)

Python FastAPI SQLAlchemy PostgreSQL Celery +4

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🌐

PriceGuard — Commodity Price Tracker

Price monitoring PWA for commodity prices across Pakistani cities. Full-stack monorepo with multi-source web scraping, real-time price analysis, historical trend visualization, and push notification alerts.

📱 Full-Stack PWA (Express + Next.js)

TypeScript Express Next.js MySQL Cheerio +4

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📱

SwishX — Basketball Training & Analytics

Advanced basketball training and performance tracking mobile app with real-time session analytics, player challenges, AI-powered coaching, and competitive leaderboards.

📱 Mobile (React Native + Expo)

React Native Expo TypeScript Redux Toolkit Supabase +2

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🤖

ScreenSolver — AI Screen Analysis Extension

Chrome extension powered by OpenAI that captures and analyzes on-screen content to answer MCQ questions, solve coding challenges, and provide detailed explanations — with auto-scanning mode and quality presets.

📱 Chrome Extension

JavaScript Chrome Manifest V3 OpenAI API DOMPurify Chrome Storage API

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🧩

Playlist Transcripts — YouTube Bulk Extractor

Chrome extension for bulk extraction of transcripts from YouTube playlists — with multi-language support, real-time progress tracking, and ZIP file downloads.

📱 Chrome Extension

JavaScript Chrome Manifest V3 YouTube API JSZip Chrome Downloads API

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🌐

PakTV LIVE — Television Broadcast Wall

Progressive Web App providing a unified broadcast wall for Pakistani live television channels — professional dark theme with live tickers, adaptive bitrate HLS streaming, and installable PWA experience.

📱 PWA (HTML5 + HLS.js)

HTML5 CSS3 JavaScript HLS.js Service Worker +1

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🤖

News Impact Trainer — Emotion Labeling Tool

Interactive web application for training emotional intelligence models using news articles. Manual emotion labeling with keyboard shortcuts, persistent storage, and ONNX model export pipeline.

📱 Web App + ML Pipeline

JavaScript HTML5 Node.js rss-parser Python +1

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🌐

PakRail Dashboard — Live Train Tracking

Real-time train tracking dashboard with live GPS data, WebSocket integration, and caching layer — providing live position updates for Pakistan Railways trains on an interactive map.

📱 Web (Node.js + Socket.IO)

Node.js Socket.IO Express HTML5 CSS3 +2

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🤖

News Analyzer — Sentiment Analysis API

.NET 8 Web API with integrated sentiment analysis using VADER and Transformer models — automated RSS feed aggregation, political categorization, and news content scoring with Swagger documentation.

📱 Backend (.NET 8 + ML)

C# .NET 8 VADER Transformer Models RSS Parser +2

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🌐

Expense Tracker — Financial Management

Full-stack expense management application with React frontend, NestJS backend, MongoDB database, and Cloudinary integration for receipt image uploads — complete with transaction tracking and budget management.

📱 Full-Stack (React + NestJS)

React Vite NestJS MongoDB Cloudinary +1

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🌐

PakTV Guide — TV Schedule & EPG

Electronic Program Guide (EPG) for Pakistani TV channels with automated web scraping — Next.js 14 frontend displaying weekly schedules aggregated from multiple channel websites via Cheerio and Puppeteer.

📱 Full-Stack (Next.js + MySQL)

Next.js React TypeScript MySQL Cheerio +1

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📱

FinancePlus — Personal Finance Manager

React Native personal finance management app with interactive charts, transaction tracking, budget management, and multi-account support — with local SQLite storage for offline-first experience.

📱 Mobile (React Native)

React Native TypeScript SQLite Chart Kit

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🖥️

Glance — Customizable Dashboard

Lightweight, highly customizable dashboard application built in Go — displaying RSS feeds, weather, crypto prices, Docker container stats, and server monitoring in a single configurable interface.

📱 Desktop (Go)

Go YAML Docker HTML5 CSS3

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🌐

News Dashboard — Blazor Real-Time Feed

Real-time news dashboard built with Blazor WebAssembly and .NET backend — automated RSS feed polling, SQL Server storage, and interactive feed browsing with category filtering.

📱 Web (Blazor WebAssembly + .NET)

Blazor C# .NET SQL Server Entity Framework Core +1

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🧩

Laam Smart Shopper — Price Comparison Extension

Chrome extension for smart shopping on Laam.pk — price comparison, deal detection, and product analysis to help shoppers find the best value across Pakistani e-commerce.

📱 Chrome Extension

JavaScript Chrome Manifest V3 Chrome Storage API DOM APIs

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⚙️

Push Notification Hub — Multi-App Service

Centralized push notification service powering multiple mobile apps — Node.js backend with OneSignal integration, MSSQL/Sequelize for data persistence, serving currency, gold price, motorway, and other app notifications.

📱 Backend (Node.js + OneSignal)

Node.js Express OneSignal MSSQL Sequelize +1

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🖥️

YouTube Transcript Downloader — Desktop Tool

Desktop application for concurrent bulk downloading of YouTube video transcripts — Python GUI with Tkinter, Playwright for browser automation, and async processing for high-speed extraction from channels and playlists.

📱 Desktop (Python + Tkinter)

Python Tkinter Playwright asyncio

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Personal Projects & Side Work

Independent builds, not client or employer work. Chrome extensions, PWAs, automation tools I built in my own time to solve my own problems or explore new stacks via AI-assisted workflows.

Published on the OpenAI GPT Store

Custom GPTs I built and published for public use — click any card to try it on ChatGPT

Tech Stack

Technologies and tools I work with daily

Core Languages (Direct Fluency)

C# C#

Ty TypeScript

Ja JavaScript

Ja Java

Ko Kotlin

Sw Swift

Da Dart

Backend

.N .NET

No Node.js

Ne NestJS

Ex Express

Gr GraphQL

Ka Kafka

Ra RabbitMQ

Databases

Po PostgreSQL

SQ SQL Server

SQ SQLite

Mo MongoDB

Re Redis

Mobile

Fl Flutter

Re React Native

Je Jetpack Compose

Sw SwiftUI

Frontend

Re React

Ne Next.js

Ta Tailwind

Cloud & Services

Fi Firebase

Su Supabase

AW AWS

Az Azure

Tools & DevOps

Gi Git

An Android Studio

Xc Xcode

VS VS Code

Po Postman

Fi Figma

AI-Assisted Delivery (Shipped + Exploring)

Op OpenAI

Cl Claude

Ge Gemini

Co Codex

Cu Cursor

La LangChain

La LangGraph

n8 n8n

How I Work

Transparent engagement, daily updates, honest about which stacks I write directly vs. deliver via AI-assisted workflow.

Availability & Timezone Overlap

Remote with global clients since 2011. 40+ hours/week. Working hours 9 AM – 11 PM PKT (UTC+5), 14-hour daily window.

Client Reviews

What clients say after working with me

Speaking & Seminars

Guest speaker at 5 universities — sharing real-world engineering experience on AI, career paths, and the tech industry

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

Experience

15+ years of career progression — from junior developer to technical leader