Senior System & Network Administrator | FortiGate & Cisco Security Expert

I am a dedicated System and Network Administrator with a proven track record of designing, securing, and maintaining enterprise-grade IT infrastructures. Over the years, I have specialized in optimizing core network stability and streamlining server environments to help businesses achieve secure and seamless operations.

My core expertise includes:
- Network Security & Infrastructure: Expert-level configuration of FortiGate Firewalls (Security Policies, Profiles, NAT, and Route Management) to safeguard corporate networks against external and internal threats.
- Virtual Private Networks (VPN): Designing stable and encrypted corporate communication channels, including advanced Site-to-Site IPsec tunnels and secure SSL-VPN solutions for remote teams.
- Enterprise Routing & Switching: Implementation and fine-tuning of Cisco protocols (such as OSPF, EIGRP, and STP) alongside Inter-VLAN routing and EtherChannel settings to prevent network loops and optimize traffic.
- Systems Administration: Full-cycle deployment of Windows Server environments, complex Active Directory setups, strict Group Policy (GPO) compliance, and reliable DNS/DHCP infrastructures.
- Maintenance & Troubleshooting: Efficient disaster restoration for network racks following power failures, managing server clustering, and utilising hands-on simulation tools like GNS3 and EVE-NG to rigorously test environments before staging.

I pride myself on delivering highly secure, scalable, and stable technical solutions. Whether you need an infrastructure migration, advanced firewall provisioning, or remote server troubleshooting, I ensure standard-compliant engineering with clear communication.

Work Terms

- Availability: Available for remote freelance projects, troubleshooting tasks, and long-term network/server monitoring.
- Communication: Preferred communication through the Guru platform for project updates and alignment.
- Execution: All major network configuration shifts or firewall policy changes are thoroughly simulated and tested before being applied to the production environment to ensure safety and prevent downtime.
- Rates & Estimates: Open to both fixed-price milestones and hourly contracts, depending on the project scope and complexity.

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