Network Security Engineer - Electus Recruitment Solutions in Stevenage

Location: Stevenage (Onsite Shift work)

Employment type: Full-time

Seniority level: Mid level

Salary: £50k per annum + £2k bonus + £8k shift allowance

We are looking for a passionate Network Security Engineer to join a unique, multi‑national Information Management function. Ideal candidates should be committed to protecting critical systems and ensuring the integrity and security of the network infrastructure.

Key Responsibilities

• Participate in 24x7 Internal Security Response (ISR) team incident response and triage.
• Design, implement, and maintain robust security solutions to protect against evolving threats.
• Collaborate with cross‑functional teams to implement changes securely, identify vulnerabilities, and manage security incidents.
• Optimize network security tools to remediate “purple team” highlighted improvement areas and standardise network tools.

Essentials

• Solid understanding of networking principles (TCP/IP, DNS, routing, switching, VLANs and load balancing).
• Strong expertise in configuring, maintaining and troubleshooting firewalls such as Cisco, Checkpoint, Palo Alto.
• Hands‑on experience in next‑gen firewalls and advanced security features like IPS/IDS, SSL decryption and deep packet inspection.
• Proven experience managing secure proxy solutions (e.g., Bluecoat, F5) and policies for content filtering, SSL inspection and network traffic monitoring.
• In depth knowledge of security protocols such as IPSec, SSL/TLS, VPNs and two‑factor authentication.
• Understanding of network architectures and security zones (DMZ, internal networks).
• Proficient in monitoring utilities such as PRTG, Nagios.

Desirable

• Knowledge of cyber security capabilities and their integration into network infrastructure.
• Experience or aptitude to learn Darktrace Antigena and Respond, Splunk ES or LogRhythm tools.
• Strong ability to interpret packet capture data to identify malicious traffic and attacker behaviours.
• Experience reviewing SOC alerting with analysts to triage Tier‑1 alerts.
• Experience with LDAP and application traffic flow root‑cause analysis.
• Root‑cause identification experience referencing OSI model and protocols such as DNS, HTTP(S), SSL, SMTP, FTP(S), LDAP(S) and monitoring tools.

Requirements

• Current or eligible for Government Security Clearance (DV clearance required; SC level minimum).
• Only British citizens are eligible due to special nationality rules.

This is a permanent role with a competitive salary and benefits package. We thank you for your interest. Please note that if you have not heard from us within 7 working days, your application will be considered unsuccessful.