317 Network Administrator jobs in the United Kingdom

• Assist in the installation, configuration, and maintenance of network hardware, including routers, switches, and firewalls.
• Monitor network performance and troubleshoot connectivity issues.
• Provide technical support to end-users for network-related problems.
• Help manage user accounts, permissions, and access rights.
• Assist in maintaining network documentation, including diagrams and inventory.
• Support the implementation of network security measures.
• Participate in IT projects as directed by the IT Manager.
• Learn and apply best practices in network administration and IT support.
• Undertake assigned study modules and coursework for the apprenticeship program.
• Ensure adherence to company IT policies and procedures.
• Respond to IT support tickets in a timely and efficient manner.

• Minimum of 4 GCSEs at Grade C/4 or above, including English and Maths, or equivalent qualifications.
• A strong interest in IT, computer networks, and technology.
• Basic understanding of computer hardware and software.
• Familiarity with operating systems (e.g., Windows) is advantageous.
• Good problem-solving skills and attention to detail.
• Effective communication and interpersonal skills.
• Ability to follow instructions and work collaboratively within a team.
• Willingness to learn and undertake formal training.
• A proactive attitude and a desire to build a career in IT.

• Designing, installing, configuring, and maintaining network hardware and software.
• Monitoring network performance and ensuring high availability and reliability.
• Troubleshooting network issues and providing timely resolution.
• Implementing and managing network security measures to protect against threats.
• Administering network services such as DNS, DHCP, and VPNs.
• Managing firewall configurations and ensuring compliance with security policies.
• Developing and maintaining network documentation, including diagrams and configurations.
• Providing remote technical support to end-users for network-related issues.
• Evaluating and recommending new network technologies and solutions.
• Participating in capacity planning and network infrastructure upgrades.

• Administer, maintain, and troubleshoot complex network infrastructure, including routers, switches, firewalls, and VPNs.
• Manage and monitor server environments (Windows Server, Linux), including installation, configuration, patching, and performance tuning.
• Implement and maintain robust security measures to protect against cyber threats, including antivirus, intrusion detection, and vulnerability management.
• Develop and execute disaster recovery and business continuity plans, ensuring data integrity and minimal downtime.
• Provide Tier 3 support for complex technical issues, resolving incidents in a timely and efficient manner.
• Automate routine tasks through scripting (e.g., PowerShell, Bash) to improve operational efficiency.
• Monitor system performance and proactively identify and resolve potential issues.
• Manage cloud infrastructure (e.g., AWS, Azure) for scalability and reliability.
• Collaborate with development teams to support application deployment and integration.
• Maintain comprehensive documentation of network configurations, system procedures, and troubleshooting guides.
• Stay current with emerging technologies and industry best practices in network and systems administration.
• Participate in on-call rotation to provide 24/7 support when necessary.
• Contribute to IT projects, system upgrades, and technology evaluations.

• Proven experience as a Network and Systems Administrator, with a strong emphasis on remote management.
• In-depth knowledge of networking protocols (TCP/IP, DNS, DHCP, BGP, OSPF).
• Expertise in Windows Server administration and experience with Linux distributions.
• Hands-on experience with firewall management (e.g., Cisco ASA, Palo Alto) and VPN technologies.
• Proficiency in scripting languages for automation (e.g., PowerShell, Bash).
• Experience with cloud platforms such as AWS or Azure is highly desirable.
• Strong understanding of cybersecurity principles and best practices.
• Excellent troubleshooting and problem-solving abilities.
• Ability to work independently and manage time effectively in a remote setting.
• Relevant certifications such as CCNA, CCNP, MCSE, or equivalent are a plus.
• Strong communication and documentation skills.
• Experience with virtualization technologies (e.g., VMware, Hyper-V).

• 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.