Senior Network Administrator – Secure Defense IT, 24x7 Ops

Arena Technical Resources, LLC (ATR); Maryland; On-site; USD 110,000 - 150,000; Full time

Job summary

Arena Technical Resources, LLC (ATR) is seeking a Network Administrator to support a federal client in defense of homeland security. You will implement and maintain network infrastructure, troubleshoot complex issues, and ensure performance, availability, and security.

The role includes providing technical leadership to junior engineers. Active Secret clearance and US citizenship are required, with 7+ years of relevant experience in network configuration and monitoring, including firewall setups

Qualifications

• Active Secret clearance required.
• US citizenship is required; dual citizens not considered.
• Seven or more years of experience as a Network Administrator or in a related field.
• Five or more years in network configuration and monitoring.
• Firewall configuration experience (Palo Alto, Juniper, etc.).
• Experience with network monitoring tools such as SolarWinds and NetCool.
• Must be able to travel within office/data center environments and perform on-call duties.

Responsibilities

• Configure and maintain network devices such as routers, switches, firewalls, load balancers, and VPN concentrators.
• Monitor network performance, identify bottlenecks, and optimize throughput and reliability.
• Troubleshoot and resolve network issues using firewall logs and packet capture tools; coordinate with cross-functional teams.
• Conduct capacity planning and bandwidth management for future growth.
• Integrate network infrastructure with cloud services, storage systems, and other IT components.
• Stay updated on networking trends and best practices and recommend adoption as appropriate.
• Create and maintain documentation for configurations, diagrams, SOPs, and troubleshooting guides.
• Provide technical leadership and mentorship to junior network engineers.
• Manage, monitor, maintain, and secure networks and tenant segments for data transport.
• Organize and manage delivery of network load balancing services.
• Document and manage Internet Protocol Addresses.

Skills

Network configuration

Network monitoring

Firewall configuration

On-call readiness

Tools

SolarWinds

NetCool

Job description

Arena Technical Resources, LLC (ATR) is seeking a Network Administrator to support a federal client in defense of homeland security. You will implement and maintain network infrastructure, troubleshoot complex issues, and ensure performance, availability, and security.

The role includes providing technical leadership to junior engineers. Active Secret clearance and US citizenship are required, with 7+ years of relevant experience in network configuration and monitoring, including firewall setups