Senior Principal Network Administrator – Top Secret

Northrop Grumman

. Maintain efficient operation of LAN/WAN/VPNs .

Posted 4/25/2026full-timeSigonella • 🇮🇹 ItalySenior💰 $129,300 - $193,900 per yearWebsite

Tech Stack

Tools & technologies

Firewalls

About the role

Key responsibilities & impact

Maintain efficient operation of LAN/WAN/VPNs
Plan, design, configure, and install network hardware in support of customer requirements
Maintain technical expertise in all areas of networks and computer hardware and software interconnection and interfacing
Propose solutions to management to ensure all communications requirements based on future needs and current usage
Create and ensure that appropriate network documentation exists, including operational instructions
Provide regular monitoring and network analysis regarding short- and long-range planning for in-house systems
Perform troubleshooting analysis of network infrastructure and associated systems
Install and configure Cisco routers, switches, and firewalls
Implement and troubleshoot LAN technologies such as VLANs, Trunking, Spanning-Tree, and Port Security
Provide third-level support and troubleshooting of network problems
Report project status as required for all recurring and non-recurring efforts

Requirements

What you’ll need

Bachelor's degree in a STEM discipline (Science, Technology, Engineering or Math) with 8 years of related engineering experience; OR a Master’s degree in STEM with 6 years of related engineering experience
Current active DoD Top Secret level security clearance (will need to move to a NATO COSMIC once hired)
Experience installing & maintaining Cisco brand networking equipment for both LAN & WAN configurations
Current Security+CE, CASP, CISSP, or similar DoD 8570/ 8140 security certification
CISCO CCNA 200-301 or Comptia Network + with the ability to achieve a CISCO CCNA 200-301 certification within 6 months
Experience working on a team of IT professionals
Ability to travel 50% plus
Ability to lift equipment weighing up to 40 pounds
Ability to work after hours and on weekends as needed.

Benefits

Comp & perks

Health insurance coverage
Life and disability insurance
Savings plan
Company paid holidays
Paid time off (PTO) for vacation and/or personal business
Discretionary bonus

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

network hardware configurationLAN/WAN/VPN maintenanceCisco routers installationCisco switches installationfirewall configurationVLAN implementationtroubleshooting network infrastructurenetwork analysisnetwork documentationoperational instructions

Soft Skills

problem-solvingcommunicationteam collaborationproject reportingplanningtroubleshootingadaptabilitytime managementattention to detailcustomer service

Certifications

Bachelor's degree in STEMMaster's degree in STEMDoD Top Secret security clearanceSecurity+CECASPCISSPCISCO CCNA 200-301Comptia Network+CISCO CCNA certificationDoD 8570/8140 certification