Network Systems Administrator

Responsibilities

• Administer and maintain network enterprise infrastructure including switches, routers, wireless access points, and associated cabling and hardware.
• Monitor network performance and system health, respond to alerts and incidents, investigate anomalies and escalate complex issues to senior staff as appropriate.
• Participate in the design and implementation of multi-server Windows and Linux physical and virtual environments including IP address schemes, DNS, and network Ether-Channel (Bonding) configurations.
• Assist with network security administration including firewall rule reviews, content filtering, and log collection and escalates security events to appropriate teams.
• Provide telecommunications support including design, project management, analysis, and implementation of new voice and video technologies.
• Design, configure, deploy and maintain analog and digital telephony systems using various technologies including Voice over Internet Protocol (VoIP), and session initiation protocol (SIP).
• Administer DNS, DHCP, and IP address management, and maintain accurate network documentation and asset inventory.
• Support hybrid network connectivity, including cloud-based services and integration with on-premises infrastructure as needed.
• Manage assigned projects and program components to deliver services in accordance with established objectives and within budget.
• Maintain VPN and remote access infrastructure including user access configuration, certificate management, and basic troubleshooting for site-to-site and remote access connections.
• Troubleshoot malfunctions on network hardware and software applications, telephones, and security systems to resolve operational issues.
• Track and resolve support tickets while documenting issues, resolutions and operational procedures for future reference.
• Manage assigned infrastructure projects and contribute to capacity planning, system reliability, availability, security, and cost‑effective network design.

• Bachelor's Degree in Information Technology, Computer Networking, or a related field; or equivalent combination of education and/or experience.
• 2 years of experience in network administration, IT support, or a related technical role.
• Thorough understanding of networking concepts including, but not limited to LANs, WANs, DNS, security, routing protocols, VPNs, IP protocols, VLANs, subnetting, and related technologies.
• Subject‑matter expertise with LAN and WAN technologies and common network administration tasks, including NAT, ACLs, routing protocols, switching, firewall rules, and related configurations.
• Experience with VPN technologies and basic firewall administration.
• Experience with VoIP and Call Center design, troubleshooting and configuration.
• Familiarity with essential network monitoring tools.
• Strong analytical and diagnostic skills to quickly identify, isolate, and resolve network connectivity and hardware problems.
• Ability to travel to various work locations as business need requires.