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Network Security Engineer
Job Posted: 2 days ago
Salary: £ 55,000 - 60,000 / Annum
Job Type: Permanent
Location: Basingstoke, Hampshire
Expire in: a month
Job Description
Network Security Engineer
Location: Basingstoke (Hybrid - 2-3 days on-site per week)
Salary: Up to £60,000 + 10% bonus
83zero are proud to be working with a leading global organisation, headquartered in Basingstoke, who are on the lookout for a Network Security Engineer to join their Central IT division. This business operates within a secure and highly regulated environment and are looking for a technically skilled professional to help maintain and enhance their critical network infrastructure.
As a Network Security Engineer, you'll play a vital role in the build, support, and evolution of complex networking systems, ensuring resilience, security, and performance across their production, pre-production, and development environments. You'll work closely with the Infrastructure and Security teams to both proactively manage the network and support ongoing security initiatives.
Key Responsibilities:
Provide technical support and network configuration across LAN, WAN, WLAN, VPN, firewalls, and intrusion prevention systems
Maintain and support Cisco, HP, and Check Point hardware/software
Respond to service requests and incidents in line with ITIL processes
Monitor and enhance network security controls including web security gateways, NAC, endpoint security, and perimeter defense
Contribute to internal reviews, security audits, vulnerability assessments, and penetration testing
Support firewall rule changes, VPN access, network segmentation, and performance improvements
Participate in on-call rotation for high-priority issues and assist during major incidents
Create and maintain documentation including SOPs and security protocols
Support IT security team with threat modelling, remediation, and policy compliance
Essential:
Strong background in network engineering and troubleshooting across complex environments
Operational knowledge of LAN/WAN infrastructure, routing protocols (OSPF, BGP, EIGRP), VPN (IPSec, IKE, SSL), and firewall configuration
Experience working in secure environments with a focus on proactive security posture
Knowledge of network security tools such as Cisco Secure Access, Cisco ISE, Microsoft Defender XDR, Sentinel, and SentinelOne
Comfortable with vulnerability management frameworks and tools
Familiarity with network monitoring and performance management
Previous experience working within an ITIL-based support framework
Hands-on experience with Check Point, Cisco, or Palo Alto firewalls
Desirable:
Certifications such as CCNA, CCNP, CISSP, or equivalent
Experience with Citrix load balancing and Microsoft Azure networking
Knowledge of WAF technologies
ITIL Foundation certificationBefore You Apply
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