Network Security L2/L3 Administrator
We are looking for experienced Network Security L2 and L3 Administrators for a 6 month contract with possible extension. This customer-facing role requires strong technical expertise and communication skills, working with cutting-edge networking technologies in a dynamic, high-impact environment. The successful candidate will need to be on site 5 days per week.
Responsibilities:
* Troubleshoot and resolve complex network issues (OSI layers 1-7).
* Monitor network performance and respond to incidents.
* Support and manage Cisco WLAN Controllers, SSIDs, and Access Points.
* Implement and troubleshoot firewalls, VPNs, NAT policies, and security protocols.
* Configure and troubleshoot routing & switching protocols (OSPF, BGP, VLANs, etc.).
* Maintain LAN, WAN, SD-WAN, and wireless networks.
* Administer DNS, IPAM, DHCP, and F5 LTM (SSL, iRules, patches).
* Conduct proactive network analysis and apply patches/firmware updates.
* Coordinate with vendors for issue resolution and manage major incidents.
Skills & Experience:
Must-Have:
* Expertise in F5 LTM, DNS/DHCP, and IPAM.
* Certifications: CCNP, CCSA, F5 Certificate.
Nice-to-Have:
* Experience with Cisco Meraki, AWS Networking, Cisco ISE & Security.
* Knowledge of network monitoring tools like BIG IQ, SolarWinds, and ThousandEyes.
Work Pattern:
* L2 Admins: On-site 24x7 shift coverage.
* L3 Admins: On-site during UK business hours, on-call (rota) outside business hours.
If you are a proactive Network Administrator ready for a challenging and rewarding opportunity, apply now!
#J-18808-Ljbffr