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Network Administrator I

FT JOHNSONPosted Feb 23, 2026

Job description

Description Maintain Cisco IOS switches (3550xl, 3750x). Maintain Cisco Nexus switches (5K, 7K). Upgrade code for Cisco switches. Design and maintain spanning tree topology (STP, MSTP). Troubleshoot fiber (single mode, multi-mode, 100mb, 1000mb, 10000mb). TCP/IP management. Perform upgrades and patches.

Requirements

Must possess an active DOD Secret Security Clearance. Minimum experience of 3-5 years performing Network Administration, preferably as part of a government branch. Experience tracking multiple projects and items. Experience working with switches and routers. IAT Level II Certification (Security+) Specialized Experience: CCNA or equivalent Level II certification (or capable of becoming certified within 6 months of hire)

Description copied from A&T Systems's careers page. Read the full posting before you apply.

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