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husseinzaher/README.md

Hi, I'm Hussein Zaher πŸ‘‹

Senior Software Engineer | Backend & AI Engineering

I build scalable backend systems, SaaS platforms, business applications, and developer tools using PHP, Laravel, .NET, and Node.js.

My focus is on system architecture, real-time systems, performance, testing, and AI-powered software development.


About

  • 6+ years building scalable backend systems, SaaS platforms, and e-commerce products.
  • Worked on products serving 2M+ users.
  • Strong background in Laravel, PHP, .NET, Node.js, APIs, queues, events, and real-time systems.
  • Experience with system architecture, performance optimization, testing, CI/CD, and cloud infrastructure.
  • Building with LLMs, AI agents, RAG, and AI-assisted development workflows.

Tech Stack

Backend

PHP β€’ Laravel β€’ C# β€’ .NET β€’ Node.js
REST APIs β€’ Webhooks β€’ Queues β€’ Events
MySQL β€’ PostgreSQL β€’ Redis β€’ MongoDB

Architecture & Systems

System Design β€’ Microservices β€’ Event-Driven Architecture
Real-Time Systems β€’ Distributed Processing
Performance Optimization β€’ System Integration

AI

LLM Integration β€’ AI Agents β€’ RAG
Prompt Engineering β€’ AI APIs β€’ AI-Assisted Development

DevOps

Docker β€’ Linux β€’ Nginx
AWS β€’ GCP β€’ DigitalOcean β€’ Hetzner
GitHub Actions β€’ Azure DevOps β€’ CI/CD

Testing & Quality

Pest β€’ PHPUnit β€’ PHPStan β€’ Larastan
Deptrac β€’ TDD β€’ Static Analysis


Featured Projects

πŸ”Ή easy-test

A Laravel testing package for running Pest test groups independently with per-module coverage, parallel execution, retries, Docker support, and testing database safety checks.

πŸ‘‰ View on GitHub

πŸ”Ή Smart In-Store Notification System

A SaaS platform for e-commerce stores focused on real-time customer engagement and marketing-driven experiences.

Highlights:

  • Real-time interactive notification cards
  • Dynamic customer engagement workflows
  • Real-time communication
  • Marketing-focused UX
  • Built with Laravel, FilamentPHP, Redis, and WebSockets

πŸ”Ή Remote Card System for E-commerce

A real-time notification and remote card system designed for scalable and customizable e-commerce experiences.

Highlights:

  • Laravel backend
  • TypeScript frontend
  • Real-time communication
  • Customizable notification engine
  • Event-driven workflows

πŸ”Ή Multi-Vendor E-commerce Platform

A B2B/B2C multi-vendor marketplace platform with advanced commerce workflows.

Features included:

  • Product and vendor management
  • Orders and purchasing workflows
  • Ads manager
  • Reels
  • Offers and coupons
  • Payments
  • Shipping
  • Wallets
  • Inventory management
  • Bundles
  • Product variations

πŸ”Ή WhatsApp Multi-Agent System

A WhatsApp-based communication platform supporting multi-agent customer service workflows.

Capabilities:

  • WhatsApp API integration
  • Multi-agent support
  • Customer conversation tracking
  • Agent assignment
  • Agent-based response management
  • Real-time communication

πŸ”Ή MQTT Laravel ↔ Flutter Bridge

A real-time communication bridge between a Laravel backend and Flutter agents.

Capabilities:

  • Laravel command server
  • MQTT-based communication
  • Remote command execution
  • Real-time agent status reporting
  • Designed for reliable IoT-style communication

πŸ”Ή Advanced File Management System

A cloud-based file management workflow supporting large files and controlled access.

Capabilities:

  • Large-file management
  • Web scraping workflows
  • AWS S3 and pCloud integration
  • File permissions
  • Expiring URLs
  • Cloud storage workflows

Key Achievements

  • Optimized high-traffic e-commerce systems and resolved critical concurrent order-processing issues
  • Worked on products serving 2M+ users
  • Led development teams and improved delivery speed by 20% over 6 months
  • Built multi-vendor B2B/B2C marketplace solutions
  • Integrated multiple payment gateways including STC, Mada, PayPal, Fawry, Stripe, and PayTabs
  • Built real-time communication systems using Pusher, WebSockets, and MQTT
  • Built WhatsApp-based multi-agent customer service systems
  • Designed cloud-based file management and storage workflows

Education

Diploma in Data Science

Faculty of Graduate Studies for Statistical Research (FGSSR), Cairo University 2024 – 2026

Diploma

Information Technology Institute (ITI)


Certification

Senior Laravel Developer


πŸ“š Training

  • Back-end (.NET Core) Diploma
  • Advanced Test-Driven Development
  • Webmaster Diploma β€” Vue.js & Laravel

Connect


Quote I Live By

β€œKeep learning. Keep shipping. Keep improving.”

Pinned Loading

  1. easy-test easy-test Public

    Laravel testing toolkit for isolated Pest groups, per-module coverage, parallel execution, retries, Docker, and database safety.

    PHP

  2. ecommerce-micro-apps ecommerce-micro-apps Public

    PHP

  3. assessment-astudio assessment-astudio Public

    Modular Laravel backend application demonstrating RESTful APIs, service-layer architecture, dynamic attributes, authentication, and testing.

    PHP

  4. order-approval order-approval Public

    Laravel order management backend demonstrating approval workflows, order history, service-layer architecture, and RESTful APIs.

    Blade