Administrator, Network

Job Summary

We are seeking a highly skilled Network Operations Administrator with a strong background in managing large-scale, multi-site network infrastructures, preferably in the retail sector. The ideal candidate will have experience with Fortinet technologies (FortiGate, FortiManager), Cisco Nexus switching, VXLAN, NSX-T, and cloud platforms such as Google Cloud Platform (GCP) and Microsoft Azure. This role involves maintaining, securing, and optimizing our hybrid network environment, supporting both on-premises and cloud-based infrastructure, and participating in a rotating 24/7 on-call schedule.

Key Accountabilities

Network Infrastructure Management

• Configure, monitor, and maintain FortiGate firewalls and FortiManager.
• Perform firmware upgrades across Cisco and Fortinet devices.
• Administer Cisco Nexus switches, routers, and wireless controllers (AirOS/IOS-XE).
• Implement and manage VXLAN overlays for network segmentation and virtualization.
• Support Cisco ISE for identity-based network access control (Radius/TACACS).
• Manage and troubleshoot NSX-T environments for network virtualization and microsegmentation.
• Manage and optimize network connectivity in GCP and Azure environments.

Automation & Monitoring

• Develop and maintain Python scripts for network automation and operational efficiency.
• Implement proactive monitoring and alerting using SolarWinds and other tools.

Troubleshooting & Support

• Provide advanced troubleshooting for network-related issues, ensuring minimal downtime.
• Perform root cause analysis of network incidents and implement corrective actions.
• Support end-users and internal teams with network-related queries and issues. Handle L3 support tickets escalated from technician (L2) and call center (L1).
• Document and maintain Standard Operating Procedures (SOPs) and Knowledge Base (KB) articles.

On-Call Rotation

• Participate in a rotating on-call schedule to provide 24/7 support for critical network issues.
• Respond promptly to critical incidents, coordinate resolution efforts and communicate effectively with team members and stakeholders during on-call periods.

Documentation & Reporting

• Maintain accurate network documentation including diagrams, configurations, and change logs.
• Generate performance and incident reports for internal stakeholders.

Continuous Improvement

• Stay current with emerging technologies and industry best practices.
• Recommend and implement improvements to enhance network performance, security, and scalability.

Job Requirements

• Degree or certificate in Information Technology, Network, or related field;
• Three (3) to five (5) years’ experience in network operations and administration;
• Certifications such as Fortinet NSE, Cisco CCNA/CCNP, VMware NSX-T, or relevant cloud certifications (GCP, Azure) are highly desirable;
• Proficiency in managing Fortigate firewalls and Fortimanager;
• Strong knowledge of Cisco Nexus switches and other Cisco networking devices;
• Experience with VXLAN implementation and management;
• Advanced troubleshooting skills in a complex network environment;
• Knowledge in Python scripting for network automation;
• Knowledge with SolarWinds for network monitoring and management;
• Knowledge of managing and optimizing networks in GCP and Azure environments;
• Strong analytical and problem-solving abilities;
• Excellent communication and documentation skills;
• Ability to work independently and collaboratively in a fast-paced environment; and
• Calm and effective under pressure, especially during incident response.