Sr Network Administrator

Antero Technology Services • Laurel, MD

12d • Onsite

About The Position

Antero Technology Services is seeking a Senior Network Administrator to take ownership of technical work in secure enterprise network environments. This hands-on senior role combines network operations with engineering, design, advanced troubleshooting, security, and modernization. The administrator will solve complex network problems, contribute to infrastructure improvements, and share expertise with the team. The position is 100% onsite in the Laurel, Maryland area, on day shift, with no travel. An active TS/SCI clearance is required; an existing CI polygraph is strongly preferred, though candidates who require CI-poly processing may still be considered if they have an active TS/SCI clearance. CCNA and DoD 8570 IAT Level II certifications are required.

Requirements

• Active TS/SCI clearance.
• CCNA certification.
• DoD 8570 IAT Level II certification, such as Security+.
• Ability to work 100% onsite in the Laurel, Maryland area on day shift.
• Substantial experience with enterprise routing and switching, including hands-on Cisco networking and technologies such as OSPF, BGP, RIP, VLANs, 802.1Q trunking, inter-VLAN routing, spanning-tree protocols, and EtherChannel/LACP.
• Experience supporting firewalls, VPNs, secure remote access, and enterprise network security.
• Ability to contribute to network architecture and design, independently troubleshoot complex network problems, and work with DoD/DISA STIGs in secure network environments.
• Ability to work independently with minimal supervision, take responsibility for challenging technical work, and contribute expertise to the team.

Nice To Haves

• Existing CI polygraph; candidates with active TS/SCI clearance who require CI-poly processing may still be considered.
• Experience with Juniper EX/QFX switching.
• Experience with Cisco Firepower, Palo Alto, or Juniper SRX firewalls.
• Deeper experience implementing DoD/DISA STIGs and network security hardening.
• Network modeling, analysis, or capacity-planning experience.
• Experience supporting network modernization or evaluating emerging network technologies.
• Experience mentoring or providing technical guidance to network or support personnel.

Responsibilities

• Install, configure, maintain, troubleshoot, and improve enterprise LAN/WAN infrastructure, including routers, switches, firewalls, VPNs, and secure remote-access solutions.
• Design and build network environments, contributing to network topology, architecture, segmentation, configuration, and implementation.
• Support enterprise routing and switching across Cisco and Juniper environments, including dynamic routing, Layer 2 switching, VLANs, trunking, inter-VLAN routing, spanning-tree technologies, and link aggregation.
• Configure and support network security capabilities, including access controls, firewalls, VPNs, security hardening, and DoD/DISA security baselines.
• Diagnose complex network problems, perform root-cause analysis, and help improve network availability, reliability, performance, and security.
• Contribute to network analysis, capacity planning, modernization, and evaluation of network upgrades and emerging technologies.
• Provide technical guidance and mentorship to other personnel as appropriate.

Benefits

• Opportunities to work directly with leadership.
• Opportunities for continued professional development and growth into greater technical or leadership responsibility.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed