Jr. Network Administrator - Tier II

A & T SYSTEMS INC•Aberdeen Proving Ground, MD

About The Position

The Jr. Network Administrator supports the operation, maintenance, and monitoring of Installation Campus Area Network (ICAN) and Local Area Network (LAN) infrastructure in a DoD environment. The role assists senior network personnel with configuration, troubleshooting, documentation, and performance analysis for enterprise network infrastructure. The position operates and maintains network equipment, performs IOS updates and STIG checklist completion, and installs, configures, troubleshoots, hardens, repairs, and supports Layer 2 and Layer 3 devices. It provides touch labor for LAN and ICAN systems and supports new construction or renovation projects involving switches and switch stacks. The role also maintains connectivity among LAN components and between LANs and ICAN resources. The administrator monitors performance and availability using enterprise management tools, responds to service alerts, conducts event management, and uses DoD-approved tools for packet capture, network tapping, fault analysis, and discovery. Additional duties include configuration and capacity management; support for converged IP and IP/MPLS environments, remote access, wireless, VPN, VoIP, circuit provisioning, and authentication; and preparing and maintaining network documentation and equipment inventories.

Requirements

Secret clearance.
Security+ CE certification.
CCNA or CCNP certification, or ability to obtain one within six months.
Ability to communicate complex networking concepts to technical and non-technical personnel.
Excellent customer service skills with a professional and positive demeanor.
Ability to work effectively within established deadlines and schedules.
Experience configuring and troubleshooting ASA 5500 Series Firewalls, Cisco 3000/4000/5000/6000 Series switches and routers, and Cisco Unified IP Phones.
Knowledge of Cisco Prime, Aruba OS, Cisco IOS, and Cisco NS-OX.
Knowledge of wireless protocols (802.x) and authentication protocols including EAP, PEAP, EAP-TLS, and EAP-TTLS.
Knowledge of enterprise network protocols including TCP, UDP, IP, SSH, VRRP, STP, CDP, HSRP, DNS, DHCP, VTP, VPN, FTP, TFTP, IAS, VoIP, NAT, and Dot1.x.
Familiarity with Cisco operating systems and network management tools.

Responsibilities

Operate and maintain ICAN and LAN network infrastructure equipment.
Perform IOS updates and complete STIG checklists as required.
Install, configure, troubleshoot, harden, repair, and support enterprise Layer 2 and Layer 3 network devices, including switches, routers, controllers, and wireless access points.
Provide touch labor for LAN and ICAN systems, including troubleshooting and device repair.
Support installation, configuration, and hardening of switches and switch stacks for new construction or renovation projects.
Manage and maintain connectivity between LAN components and between LANs and ICAN resources.
Use enterprise management tools to monitor network performance, analyze activity, and maintain high availability.
Conduct event management and respond to network service alerts.
Use DoD-approved tools such as NetCool and WireShark for packet capture, network tapping, fault analysis, and discovery.
Perform configuration management and capacity management of network devices.
Install, configure, support, and troubleshoot devices in converged IP and IP/MPLS environments.
Support remote access solutions, wireless networking, VPN services, VoIP systems, circuit provisioning, and authentication mechanisms.
Configure and support Cisco technologies, including ASA 5500 series firewalls, multilayer switches and routers, Cisco Unified IP Phones, Cisco Prime, Cisco IOS, and Cisco NS-OX.
Prepare, update, and maintain network Standard Operating Procedures (SOPs) and Tactics, Techniques, and Procedures (TTPs).
Maintain accurate inventory management for assigned network equipment.