Network Administrator

Location: Onsite (Potential for Limited Telework Based on Customer Needs) Employment Type: Full-Time Schedule: Monday – Friday, with occasional weekend support as required Travel: Less than 10% Clearance: Active DoD Secret Clearance Required Position Overview We are seeking an experienced Network Administrator II to support a large-scale enterprise IT environment. This role is responsible for maintaining secure, reliable network infrastructure and telecommunications systems while ensuring optimal performance across LAN/WAN environments. The ideal candidate will have experience supporting enterprise networks, troubleshooting connectivity issues, and administering network hardware and software in a secure government environment. Key Responsibilities Administer, maintain, and troubleshoot enterprise LAN/WAN infrastructure. Install, configure, and support network hardware including routers, switches, firewalls, and telecommunications equipment. Monitor network performance and proactively identify and resolve connectivity issues. Perform routine maintenance, system upgrades, and patch management on network devices. Support the implementation and maintenance of secure network architectures. Analyze network performance and recommend improvements to maximize availability, reliability, and efficiency. Evaluate hardware and software requirements and provide recommendations for upgrades, replacements, and new technologies. Assist with network documentation, inventory management, and configuration management. Work closely with systems administrators, cybersecurity personnel, and engineering teams to support enterprise IT operations. Respond to network outages and support after-hours or weekend maintenance activities when required. Ensure compliance with applicable security policies, standards, and best practices. Required Qualifications Experience administering enterprise LAN/WAN environments. Hands‑on experience configuring and troubleshooting Cisco or similar enterprise networking equipment. Knowledge of TCP/IP, DNS, DHCP, VLANs, routing, switching, and network protocols. Experience supporting enterprise telecommunications infrastructure. Strong troubleshooting and problem‑solving skills. Experience installing, maintaining, and upgrading network hardware and software. Ability to document network configurations and operational procedures. Strong verbal and written communication skills. Ability to work independently while collaborating within a team environment. Preferred Qualifications CompTIA Security+ or other DoD 8570/8140 compliant certification. Cisco certifications such as CCNA or CCNP. Experience with network monitoring and management tools. Familiarity with virtualization and cloud networking concepts. Experience supporting government or military IT environments. Knowledge of network security best practices, STIGs, and vulnerability remediation. What You'll Bring A strong understanding of enterprise networking principles and infrastructure. The ability to quickly diagnose and resolve complex network issues. A proactive approach to maintaining secure, highly available network environments. Strong organizational skills and the ability to support mission‑critical operations in a fast‑paced environment. #J-18808-Ljbffr Seneca Resources