What are the responsibilities and job description for the Network Administrator position at The Intersect Group?
Position Summary
We are seeking a Network Administrator to support, maintain, and continuously improve a large scale enterprise networking environment across campus, branch, cloud, and hybrid infrastructures. This role plays a critical part in ensuring the reliability, security, and performance of core network services while supporting modernization, automation, and Zero Trust initiatives.
The Network Administrator will provide operational support for enterprise networking technologies including routing, switching, wireless, SD WAN, VPN, DNS, and DHCP services. Working closely with Network Engineering, Cybersecurity, Cloud Operations, and Service Desk teams, this individual will help deliver highly available and secure network solutions while contributing to infrastructure improvements and operational excellence.
Key Responsibilities
• Provide Tier I and Tier II support for enterprise LAN, WAN, WLAN, SD WAN, VPN, DNS, DHCP, and Internet connectivity services
• Monitor, troubleshoot, and resolve network performance, availability, and reliability issues across enterprise environments
• Install, configure, maintain, and support Cisco networking infrastructure including Catalyst switches, wireless controllers, and Meraki solutions
• Execute network refresh projects, hardware replacements, software upgrades, and lifecycle management activities
• Maintain network configurations, VLANs, routing protocols, wireless infrastructure, and IP address management systems
• Support firewalls, network access control solutions, secure remote access technologies, and network segmentation initiatives
• Partner with cybersecurity teams on vulnerability remediation, incident response, and infrastructure hardening efforts
• Utilize monitoring and observability platforms to proactively identify, analyze, and resolve network issues
• Analyze packet captures, NetFlow data, latency trends, and application performance metrics to optimize network performance
• Support network automation initiatives utilizing Ansible, Terraform, Python, PowerShell, REST APIs, and Git based workflows
• Maintain network documentation, diagrams, standards, and operating procedures
• Participate in project implementations, maintenance windows, and on call support rotations
Key Requirements
• 4 to 5 years of experience supporting enterprise network infrastructure and network operations
• Experience supporting Cisco enterprise networking environments including switching, routing, wireless, and Meraki technologies
• Strong troubleshooting, root cause analysis, and network performance optimization experience
• Experience with enterprise ITSM platforms such as ServiceNow
• Experience supporting SD WAN technologies and enterprise VPN connectivity
• Experience with cloud networking environments including Microsoft Azure, AWS, or Google Cloud Platform
• Experience with network monitoring and observability tools such as SolarWinds, LogicMonitor, Datadog, Splunk, Grafana, ThousandEyes, or similar platforms
• Experience using network diagnostic and analysis tools including Wireshark and NetFlow
• Knowledge of network automation technologies including Ansible, Terraform, Python, PowerShell, REST APIs, and Git workflows
• Understanding of Zero Trust Architecture, SASE, Secure Service Edge, and modern network security principles
• Preferred certifications include CCNA, CCNP, CCIE, or other advanced Cisco certifications
• Strong communication, customer service, collaboration, and problem solving skills
• Ability to work independently while effectively partnering with cross functional technical teams
• Willingness to participate in after hours maintenance activities and on call support rotations
Work Environment
• Hybrid or remote work environment based on business needs
• Standard business hours of 8:00 AM to 5:00 PM
• Minimal travel requirements
• Availability to support scheduled maintenance windows, evenings, weekends, and on call rotations as needed
Why Join This Opportunity
• Opportunity to support and modernize a large scale enterprise network environment
• Exposure to cutting edge networking, cloud, security, and automation technologies
• Collaborative culture focused on innovation, operational excellence, and professional development
• Ability to make a meaningful impact on enterprise infrastructure initiatives