322 Security Administration jobs in the United Kingdom

• Strong background in network and infrastructure security.
• Experience performing penetration testing, configuration reviews, and API testing.
• Knowledge of “classic” CHECK-style testing methodologies.
• CREST, CSTL or CTL certification (Team Member or Team Leader level).
• Ability to deliver high-quality reports and communicate technical findings clearly.
• Hands-on experience across infrastructure, networking, and external testing.

• Experience working within CHECK or other accredited testing schemes.
• Strong understanding of secure network architecture and hardening practices.
• Previous consultancy or project-based testing experience.

• Outside IR35
• West London (on-site presence required for majority of testing)
• 0-hours contract – project-based work, phase by phase
• Initial phase focused on network testing, with further phases planned into next year
• Day Rate: Competitive
• Start: ASAP
• 1-Stage Interview Process with consultancy SME
  

Network Security Engineer (SOC)

Job Description

Please note this role will require candidates to gain DV Clearance.

An exciting opportunity 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.

The opportunity:

Join a forward thinking team as a Network Security Engineer, where you will play a key role in safeguarding our clients’ organisations’ network infrastructure as part of the 24x7 Internal Security Response (ISR) team.

When not involved in incident response and triage activity with the SOC team, you will be responsible for designing, implementing and maintaining robust security solutions to protect against evolving threats. Collaborating with cross-functional teams, you will work on implementing changes securely, identifying vulnerabilities, managing security incidents and ensuring compliance with industry best practices.

The role will be involved in the optimisation of network security tools to remediate “purple team” highlighted areas identified for improvement. You will also have the opportunity to immerse your time into the standardisation of network tools.

This is a dynamic opportunity to contribute to security initiatives, solve complex challenges, and have a direct impact on the overall resilience of the IT environment.

What we're looking for from you:

ESSENTIALS

• Solid understanding of networking principles (TCP/IP, DNS, routing, switching, VLANS and load balancing)
• Strong expertise in configuring, maintaining and troubleshooting firewalls e.g. Cisco, Checkpoint, Palo Alto.
• Demonstrable hands-on experience in next-gen firewalls and advancing security features like IPS/IDS, SSL decryption and deep packet inspection.
• Proven experience in managing secure proxy solutions (e.g. Bluecoat, F5) and the ability to implement 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 technologies e.g. PRTG, Nagios.

DESIRABLES

• Understanding of cyber security capabilities and their integrations to networks infrastructure.
• Existing knowledge of / aptitude to learn Darktrace Antigena and Respond, Splunk ES or Log Rhythm tools.
• Strong ability to interpret complex information via use of packet capture in order to identify malicious traffic in detail, revealing attacker behaviours like C2, exploitation, lateral movement, or data exfiltration.
• Proven ability to review SOC alerting in collaboration with SOC analysts to effectively triage and manage Tier 1 SOC alerts to the appropriate outcome.
• Experience with LDAP, and application traffic flow root cause analysis.
• Previous experience to identify root cause from (TBC for review – Demonstrable understanding of the OSI Reference Model and the network communication protocols, including but not limited to DNS, HTTP/S, SSL, SMTP, FTP/S, LDAP/S. Demonstrable experience with Security Information Event Monitoring Tools and/or Network Packet Capture tools).

Overview

Position - Network Security Engineer (SOC) – Permanent

Location – Stevenage (Onsite Shift work)

Salary - £50k (Plus £2k bonus and shift allowance)

Keywords: Network Security Engineer, SOC, Security Operations Center, Firewalls, Incident Response, Security Incidents, Networking Principles, Virtual Private Networks, Security Protocols, Vulnerabilities, Threats.

Only apply for this role if you currently hold the specific Government Security Clearance or are eligible for Government Security Clearance.

Due to the nature of work undertaken at our client's site, incumbents of these positions are required to meet special nationality rules and therefore these vacancies are only open to sole British Citizens. Applicants who meet this criteria will also be required to undergo security clearance vetting, if not already security cleared to a minimum SC level.

Electus Recruitment Solutions provides specialist engineering and technical recruitment solutions to a number of high technology industries. We thank you for your interest in this vacancy. If you don't hear from us within 7 working days please presume your application has been unsuccessful on this occasion. You are of course free to resubmit your CV/details in the future and we shall assess your suitability at that time.

This is a Permanent Role

• Designing, implementing, and maintaining network security infrastructure, including firewalls, VPNs, intrusion detection/prevention systems (IDS/IPS), and endpoint security solutions.
• Monitoring network traffic and security events for potential threats and vulnerabilities.
• Conducting regular security assessments and penetration testing to identify weaknesses.
• Developing and enforcing network security policies, procedures, and best practices.
• Responding to security incidents, performing root cause analysis, and implementing remediation plans.
• Collaborating with IT and network operations teams to ensure security is integrated into all network designs and deployments.
• Staying up-to-date with the latest security threats, vulnerabilities, and technologies.
• Providing technical expertise and guidance on network security matters.
• Managing security documentation, including network diagrams, policies, and incident reports.
• Ensuring compliance with relevant industry regulations and standards.

• Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field, or equivalent practical experience.
• Minimum of 4 years of experience in network security engineering.
• Hands-on experience with various security technologies such as Cisco ASA/Firepower, Palo Alto Networks, Fortinet, Juniper.
• Strong understanding of TCP/IP, routing protocols, and network infrastructure.
• Experience with SIEM tools (e.g., Splunk, QRadar) and log analysis.
• Knowledge of security best practices, threat landscape, and incident response methodologies.
• Relevant security certifications such as CISSP, CCNP Security, GIAC are highly desirable.
• Excellent problem-solving and analytical skills.
• Strong communication and interpersonal skills, with the ability to work effectively in a team environment.

• Design, implement, and manage network security infrastructure, including firewalls, VPNs, intrusion detection/prevention systems (IDS/IPS), and network access control (NAC).
• Monitor network traffic for security threats and anomalies, responding to security incidents in a timely and effective manner.
• Develop and maintain security policies, standards, and procedures.
• Conduct regular vulnerability assessments and penetration testing to identify and remediate security weaknesses.
• Collaborate with IT operations teams to ensure secure network configurations and deployments.
• Provide technical expertise and guidance on network security best practices.
• Stay up-to-date with the latest security threats, vulnerabilities, and technologies.
• Participate in the evaluation and recommendation of new security products and services.
• Develop and deliver security awareness training to employees.
• Ensure compliance with relevant industry regulations and standards.

• Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field, or equivalent practical experience.
• Proven experience (3+ years) in network security engineering or a similar role.
• In-depth knowledge of network protocols, TCP/IP, routing, and switching.
• Hands-on experience with various firewall platforms (e.g., Cisco ASA, Palo Alto Networks, Fortinet).
• Experience with IDS/IPS solutions and security information and event management (SIEM) systems.
• Familiarity with VPN technologies (IPSec, SSL VPN).
• Strong understanding of cybersecurity principles and best practices.
• Relevant security certifications (e.g., CISSP, CCNA Security, Security+) are a plus.
• Excellent analytical and problem-solving skills.
• Ability to work independently and collaboratively in a remote team environment.
• Strong communication skills, both written and verbal.