Senior Network Administrator - Columbia/Frederick, MD

Rohde & Schwarz GmbH & Co.; Columbia (MD); On-site; USD 110,000 - 140,000; Full time

Job summary

Rohde & Schwarz (China) Technology Co., Ltd. in Maryland seeks a senior network engineer to lead the configuration, deployment, and administration of Cisco Catalyst 9300 switching infrastructure in Columbia.

You will design Layer 2/3 solutions, manage performance, upgrades, and security controls, and produce architecture diagrams. You will mentor junior staff and coordinate with cybersecurity, systems engineering, and customer stakeholders to ensure readiness across operational environments and

Qualifications

• Experience configuring and deploying enterprise networks.
• Ability to lead network teams and mentor junior staff.
• Familiarity with Layer 2/3 switching, VLANs, QoS, and security controls.
• Experience with documentation and architecture diagrams.

Responsibilities

• Lead the configuration, deployment, and administration of Cisco Catalyst 9300 switching infrastructure.
• Design and implement Layer 2 and Layer 3 network solutions, including VLANs, routing, QoS, redundancy, and security controls.
• Manage network performance, availability, and lifecycle activities, including software upgrades, patching, and configuration management.
• Troubleshoot complex network, switching, and connectivity issues across operational environments.
• Implement and maintain network security controls, including ACLs, multicast, 802.1X, port security, and device hardening.
• Develop and maintain network architecture diagrams, configuration baselines, and technical documentation.
• Support VCS integration, migration, modernization, and sustainment activities.
• Provide technical leadership and mentorship to junior network administrators and technicians.
• Coordinate with cybersecurity, systems engineering, and customer stakeholders to ensure compliance and operational readiness.

Skills

Networking

Team Leadership

Troubleshooting

Network Security

Tools

Cisco Catalyst 9300

Cisco VCS

Job description

• Lead the configuration, deployment, and administration of Cisco Catalyst 9300 switching infrastructure.
• Design and implement Layer 2 and Layer 3 network solutions, including VLANs, routing, QoS, redundancy, and security controls.
• Manage network performance, availability, and lifecycle activities, including software upgrades, patching, and configuration management.
• Troubleshoot complex network, switching, and connectivity issues across operational environments.
• Implement and maintain network security controls, including ACLs, multicast, 802.1X, port security, and device hardening.
• Develop and maintain network architecture diagrams, configuration baselines, and technical documentation.
• Support VCS integration, migration, modernization, and sustainment activities.
• Provide technical leadership and mentorship to junior network administrators and technicians.
• Coordinate with cybersecurity, systems engineering, and customer stakeholders to ensure compliance and operational readiness.