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Mohamad El-Adly

Network Security Engineer

Securing large-scale network infrastructure β€” firewalls, SD-WAN, and Python automation.

πŸ“ Cairo, Egyptβœ‰ [email protected]

Portrait of Mohamad El-Adly

01.// About

About

Detail-oriented Network Security Engineer with 5+ years of experience designing, implementing, and securing large-scale network infrastructures. Specialized in firewall management, SD-WAN implementation, and automation using Python to enhance operational efficiency.

5+
Years experience
500+
Branch sites migrated to SD-WAN
99.9%
Network uptime maintained

02.// Experience

Experience

5+ years across pharmacy retail, automotive, and enterprise networks β€” from HQ core infrastructure to 500-site SD-WAN fleets.

  1. Network Security Engineer

    Jan 2024 – Present

    El-Ezaby Pharmacies Β· Cairo, Egypt

    • Implement, configure, and maintain multi-layered security solutions including Kaspersky Security Center, Sophos Firewall, and FortiGate firewalls to protect the organization's network infrastructure.
    • Design, implement, and manage the VeloCloud SD-WAN solution to enhance network performance and security across 500+ branches, running VeloCloud Orchestrator (VCO) and Gateways (VCG) across private cloud and on-premises.
    • Create and manage Virtual Domains (VDOMs) on FortiGate firewalls for granular control over network traffic and security policies.
    • Develop, enforce, and document security policies and procedures protecting sensitive data and systems.
    • Monitor for unauthorized access and intrusion attempts; investigate and respond to security incidents promptly, minimizing impact and preventing recurrence.
    • Conduct regular security audits and assessments to identify vulnerabilities and ensure compliance with industry standards, sustaining 99.9% network uptime.
  2. Network Engineer

    Jun 2023 – Dec 2023

    El-Ezaby Pharmacies Β· Cairo, Egypt

    • Designed, implemented, and maintained network architecture using site-to-site VPN and MPLS to support 500+ branches, ensuring scalability, reliability, and performance.
    • Orchestrated a full overhaul of HQ wired and wireless infrastructure β€” high-availability core and access switches and next-gen Wireless Controllers (WLC) with an optimized VLAN architecture.
    • Monitored network performance and troubleshot connectivity, latency, and bandwidth issues using PRTG.
    • Developed and maintained network documentation, including diagrams, procedures, and standards.
    • Coordinated with vendors and service providers to resolve network issues and ensure optimal performance.
  3. Network / System Engineer

    Jan 2023 – May 2023

    El Said Group Β· Cairo, Egypt

    • Managed site-to-site VPN across 35 branches, HQ, and Call Center using DrayTek Vigor, and deployed a Sophos Home VM to control internet traffic in HQ and the Data Center.
    • Built a PRTG monitoring server covering all branch networks and an FTP server that backs up every branch's SQL database hourly.
    • Managed 15 virtual machines across 5 hosts with VMware vCenter, administering domain controllers, file, database, and backup servers.
    • Managed Kaspersky Security Center for 500 devices, adding a distribution point in each branch to reduce network traffic.
    • Configured and maintained routers, switches, WAN accelerators, DNS, and DHCP.
  4. Support / Network Engineer

    Jan 2022 – Dec 2022

    Misr Pharmacies Β· Cairo, Egypt

    • Implemented a Sophos VPN project across all company branches, and set up firewalls, VPNs, routing, and switching to improve network efficiency and security.
    • Built a Python program that checks the status of all company branches and the key devices in each branch.
    • Built a Python program that monitors key devices per branch and sends notification emails when errors are detected.
    • Built a Python program that dispatches commands to every branch server simultaneously.
    • Built a Python program that rotates the passwords of all branch servers in under 5 minutes across 80 branches.
  5. Support Engineer

    Jan 2021 – Dec 2021

    Abaza Auto Trading Β· Cairo, Egypt

    • Installed and configured computer hardware, software, systems, networks, printers, and scanners, and provided technical support across the company in person and over the phone.
    • Created a custom Windows ISO image with pre-installed software and configurations for faster, standardized deployment.
    • Set up domain accounts and shared access for new users, and handled computer repair and replacement as needed.

03.// Certifications & Skills

Certifications & Skills

Certifications

CCNP ENARSIFortinet NSE4Fortinet SASE R03

Skills

Security & Networking

  • CCNA
  • CCNP ENARSI
  • Fortigate Firewall
  • Palo Alto Firewall
  • Sophos Firewall
  • Kaspersky Security Center
  • VeloCloud SD-WAN
  • Meraki SD-WAN
  • Aruba Central
  • Aruba WLC
  • Cisco Switches
  • Aruba Switches
  • Juniper Switches
  • HP Switches
  • PRTG

System Administration

  • VMware vSphere / ESXi
  • Proxmox
  • MCSA
  • Windows Server
  • Active Directory
  • WDS
  • Print / File Servers
  • Backup Servers

Automation & Scripting

  • Python
  • Fleet & Server Automation
  • Network Monitoring Scripts
  • Internal Web Apps
  • Batch Tooling

Other Tools

  • MATLAB
  • Arduino
  • Photoshop
  • Microsoft Office

Soft Skills

  • Fast learner
  • Troubleshooting & problem solving
  • High accuracy & attention to detail

Certificate

Certificate view

04.// Projects

Projects

Selected engineering work β€” large-scale migrations, security architecture, and automation.

Branch Network Monitoring & Alerting

Custom Python tooling that polls 500+ branch sites for real-time reachability and health, then pushes automated notifications when a link degrades β€” cutting mean time to detection for network incidents.

  • #Python
  • #Automation
  • #Monitoring
  • #SD-WAN

MPLS β†’ VeloCloud SD-WAN Migration

End-to-end migration of 500 branch sites from legacy MPLS to VeloCloud SD-WAN, including VCO/VCG deployment across private cloud and on-prem, with zero-downtime cutover planning.

  • #VeloCloud
  • #SD-WAN
  • #VCO/VCG
  • #Network Architecture

Multi-Layered Security Architecture

Layered defense combining FortiGate firewalls with VDOM segmentation, Sophos, and Kaspersky Security Center β€” hardening HQ and branch traffic with granular policy control.

  • #FortiGate
  • #VDOM
  • #Sophos
  • #Kaspersky

Fleet-wide Server Password Rotation

Python tool that rotates the administrator credentials of every branch server across 80 branches in under 5 minutes β€” turning a slow, error-prone manual chore into a one-command operation.

  • #Python
  • #Automation
  • #Security
  • #Ops

Mass Command Dispatch

Python tool that issues commands to every branch server simultaneously, enabling fleet-wide changes and maintenance to be rolled out consistently in a single run.

  • #Python
  • #Automation
  • #Fleet Ops

05.// Contact

Contact

Have a role, project, or question? Send a message β€” I'll get back to you.