3525 Systemsnetwork Administrator jobs in Baltimore,MD

Must hold an active Secret security clearance prior to start.
Must be able to obtain and maintain a Top Secret clearance.
US Citizenship required.
Bachelor's degree and 8+ years of related experience; additional years of experience may be considered in lieu of degree.
DoD 8570 IAT Level II certification required prior to start (Security+ CE or equivalent).
Advanced knowledge of enterprise routing and switching technologies.
Experience implementing and supporting large-scale enterprise network infrastructure.
Hands-on experience with routing protocols including BGP and OSPF.
Experience with switching technologies including VLANs, STP, and Layer 2/Layer 3 network design.
Strong understanding of IP networking, subnetting, and network troubleshooting methodologies.
Experience performing network hardware refreshes, circuit migrations, and infrastructure modernization activities.
Experience developing implementation plans, migration procedures, and technical documentation.
Familiarity with DISA STIG compliance requirements and secure network configuration practices.
Ability to coordinate and execute maintenance activities in a mission-focused enterprise environment.
Ability to travel up to 25%, including potential OCONUS travel.
Willingness to support scheduled after-hours maintenance windows as required.