System Online

Hello, I'm
Mohamed Zamrin

Senior Network Security Engineer

Building secure, scalable infrastructure. Automating the mundane. Occasional over-engineer.

Doha, Qatar
11+ Years Exp

Inside the Mind

"I’m an enthusiastic learner, fueled by curiosity and caffeine, possessing outstanding problem-solving capabilities."

Hey there. Welcome to my digital space. By profession, I’m a Network Security Engineer who loves to build and manage secure, scalable infrastructure—whether it’s on-premises or in the cloud. By obsession, I automate anything that moves (or doesn’t), and occasionally over-engineer things just for fun.

What I Do

I work in network security engineering with a strong focus on automation, security, and a knack for solving weird technical problems that most people didn’t know could happen. My goal? To make networks not only work—but work securely, efficiently, and with minimal manual intervention.

My Approach

I don't just patch vulnerabilities; I build resilience. My philosophy is simple: rigorous automation, proactive risk management, and systems that stay invisible until they are needed. I believe in honest engineering—fixing the root cause, not just the symptom, and ensuring infrastructure scales without keeping you up at night.

Outside the CLI

When I’m not knee-deep in configuration files, I’m a proud otaku, an avid gamer still hyped for new arcs, and a dad who never skips a shopping trip (survival skills). Whether fixing packet loss or negotiating screen time, I bring the same energy to everything.

SKILLSET

Technical Arsenal

Key Certifications

  • CCNP Enterprise & Security
  • Cisco Certified Specialist (Design)
  • Fortinet Certified Associate
  • CrowdStrike Certified Falcon Admin
  • ISC2 Certified in Cybersecurity

Security & Cloud

  • Azure Cloud Infrastructure
  • Firewall Management (Fortinet/Cisco)
  • Vulnerability Assessment (Qualys)
  • VPN (S2S, P2S) Configuration
  • Risk Management & Patching

Automation & Ops

  • Python for Network Engineers
  • Network Design & Implementation
  • Unified Communications (VoIP)
  • Monitoring (Zabbix, Graylog)
  • Log Analysis & Troubleshooting

Infrastructure & Governance

  • Windows Server & Active Directory
  • Office 365 Administration
  • Team & Resource Management
  • Policy Enforcement & Compliance
  • System Upgrades & Migration

Career Timeline

Senior Network & Security Administrator

2023 - Present

Alfardan Jewellery | Qatar

Managing Azure, Office365, CrowdStrike, and Zscaler. Executed HQ network migration with zero impact. Overseeing 30+ branches in GCC.

Senior Network Security Engineer

2016 - 2023

Cleopatra Technology W.L.L. | Qatar

Designed L2/L3 networking, wireless, and IP telephony. Configured firewalls and managed large-scale deployments like Abraj Bay and Mall of Qatar projects.

Network Administrator

2014 - 2015

Nippon Lanka Rope Industries | Sri Lanka

Managed wired LAN infrastructure and troubleshooting hardware/software systems.