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Network Administrator

Home Based
Job Description
Are you CCNA accredited? Do you have experience in configuration and administration of Cisco ASA Firewalls, Cisco Routers and Cisco Switches? We are seeking a Network Administrator for a permanent position. This role is a remote role with some travel to our UK offices.
This person will be a key member of the Northrop Grumman Network team; developing,maintaining and troubleshooting the network which supports connectivity and applications throughout the EMEA region.
**For this role you must be willing and able to go through SC clearance**
Different thinking for a Different world

Northrop Grumman is a dynamic global security company providing innovative systems, products and solutions worldwide. We have over 2,500 employees across Europe and a rapidly expanding UK operation.

In Northrop Grumman’s rapidly growing UK Cyber, Intelligence & Defence business, we support our customers’ work to create world-class mission capabilities.

As a part of Northrop Grumman you will use your skills to make a difference in our mission of enabling global security. Our company grows because of our employees' dedication and commitment to achieving this goal.

With a belief in rewarding the dedication shown by our staff, Northrop Grumman gives employees access to a benefits package that provides you with health & well-being benefits, discount schemes, pension benefits and investment in your future development, but most importantly the flexibility to balance your professional career with your personal life.


How you will make a difference
Key Responsibilities
  • Assist with the implementation/configuration and administration of networks and network devices for the medium-to-large enterprise network
  • Configure and administer the Cisco ASA Firewalls, Cisco Routers, Cisco Switches, Palo Alto firewalls, Cisco Unified Communications Manager, Cisco Meraki Wi-Fi, and other network devices
  • Own support calls assigned to the Network Team, ensuring timely and effective resolution in line with SLA/OLA guidelines
  • Proactively monitoring systems using the Enterprise tools to ensure uptime
  • Troubleshoot different protocols such as TCP/IP, MPLS, BGP, EIGRP, VPN, QoS, DHCP and DNS
  • Work collaboratively across international teams as required
  • Respond to vulnerability issues and implement patches and upgrades as required
  • Undertake responsibilities as part of the Network Team on-call rota, and work flexibly to deliver out-of-hours planned and unplanned network changes
  • Work in accordance with the company procedures and methodology as a basic discipline
  • Adhere to Northrop Grumman policies, procedures and values, including adherence to ISO20000 & ISO27001 standards
  • Work closely with Server and Desktop team escalations as required in a timely manner to ensure end user continuity of access to the network
  • Undertake any other reasonable tasks as requested


General Operational duties

  • Attend IT department meetings as required
  • Remain compliant with all applicable IT Processes and procedures
Essential Experience:
  • An active CCNA/CCNP accreditation or working towards CCNP
  • Previous experience of configuration and administration of Cisco ASA Firewalls, Cisco Routers, Cisco Switches, and other network devices such as Load balancers, WAN optimisers, and Wi-Fi environment
  • Good experience of hardware, software and network connection troubleshooting
  • Some experience of working in a team-oriented, collaborative environment
  • Proven track record of troubleshooting different protocols such as TCP/IP, MPLS, BGP, EIGRP, VPN, QoS, DHCP and DNS
  • Experience with hosted and cloud environments

Competency/Skill requirements:

  • Understanding Cloud Platforms (SaaS, IaaS) from a service perspective
  • Knowledgeable in network security principles and various measures
  • Fluent in written and spoken English
  • Good communication and interpersonal skills, able to meet the needs of a wide range of internal clients
  • Proven analytical and problem-solving abilities to trouble-shooter level
  • Highly self-motivated and directed
  • Keen attention to detail
  • Strong customer service orientation
  • Has a sense of urgency


Any experience in the below would also be beneficial:

  • Cisco Data Centre products: Nexus, MDS
  • Storage: EMC SAN Storage
  • F5 Load Balancer
  • Riverbed WAN Optimiser


Additional Information:

  • Travel requirements: UK travel (<than 25%) for meetings, conferences, training and incident resolution

  • Clearance requirements: The post-holder must hold and maintain UK Government clearances

  • This role is a remote role and can be based from home