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Network Security Administrator - L2

Network Security Administrator - L2

Req # 
UK-Greater London-Hayes

Job Overview

Overview & Responsibilities

The Network Security Engineer will be responsible for the EMEA customer base comprising in excess of 4000 customers employing a mixture of firewalled and load balanced solutions, some incorporating DR and HA solutions.


The level 2 engineer will serve as an escalation point for level 1 engineers. The level 2 network security engineer is accountable for implementation, troubleshooting and configuration of all solutions and will be heavily focused on troubleshooting customer specific network security issues. The level 2 engineer will be required to be customer facing and able to troubleshoot various issues with third party vendors and suppliers.

  • Serve as escalation point for L1 engineers.
  • Implementation, configuration, and troubleshooting:

             - DNS (A records, CNAMES, MX records, Authority Section, TTL values.)
             - Cisco firewall (ASA/PIX)

             - Juniper Firewalls
             - Cisco IDS/IPS

             - Application firewalls (layer 7) 
             - Load balancers (F5, Brocade ADX)

             - IP routing and switching

             - SNMP and monitoring platforms

  • Timely escalation of tickets to the L3 engineers
  • IP address assignment and management
  • Regularly troubleshooting customer’s IPSEC client and site-to-site VPN connections.
  • Provide world-class Fanatical support
  • Build relationships with colleagues and customers via the ticket system, telephone and face-to-face
  • Candidate must have the ability and desire to work within a Team Driven environment and be responsible enough to work with minimal supervision.
  • Perform ticket queue monitoring, and prioritization.


  • Strong, hands-on technical knowledge of networking and network security in general.
  • Ability to apply sound troubleshooting methodology in order to isolate and resolve root cause of reported issues.
  • Intermediate experience of implementing and troubleshooting VPN client and site-to-site VPN connections
  • Intermediate experience of implementing and troubleshooting load balancer configurations (F5, ACE and Webmux)
  • Basic knowledge of F5 Load balancers.
  • Intermediate experience of implementing and troubleshooting firewall configurations (PIX, ASA)
  • Responsible for performing final QC on all network devices.   
  • Advanced knowledge and understanding of TCP/IP.
  • Advanced understanding of IOS, VLAN, STP, routing and Cisco switches.
  • Troubleshoot of networking devices and network related issues.
  • Advanced understanding of troubleshooting applications such as Wireshark and TCPDUMP
  • CCSP/CCNP or equivalent experience.
  • Excellent verbal and written communication across all levels of seniority and the customer base