631 Network Engineer jobs in the United Kingdom

Team purpose

We are here to change lives through better sight and hearing by delivering outstanding value, being loved by every customer and creating the place where all colleagues are proud to belong as we grow our business.

The Network Platform team will own and develop (with the Enterprise Architecture team) the strategic network roadmap. Delivering changes, product development and maintenance required to achieve the objectives of the roadmaps. The team will also provide support and technical expertise in the case of a major incident. They work closely with third-party partners to deliver a safe, resilient, robust Network Platform and continuously review the industry and market, testing new concepts and technologies that can add value.

Your purpose

The Network Security Engineer supports the Lead Network Security Engineer in delivering the Network Security Roadmap. This role supports the implementation of Infosec-driven initiatives and acts as the second line of escalation for Network Security Incidents and ad hoc service and portfolio support requests. This role is accountable for establishing and maintaining secure network configurations, including firewalls, routers, switches, and VPNs, and periodically reviewing firewall rules and user access to the network. The Network Security Engineer focuses on continuous improvement through automation and tooling, working with Security Operations to monitor and analyse network traffic for malicious activity or potential breaches. Additionally, this role implements network access controls, enforces robust patch management for network devices, and works with network security partners to identify network vulnerabilities, planning and implementing upgrades to ensure the highest standards of network security.

This role is required to participate in an on-call rota for out-of-hours escalations for the Global Network Team.

Your role

• Support Network Security Roadmap: Assist in delivering the Network Security Roadmap.

• Subject Matter Expertise: Provide network subject matter expertise on Infosec-driven initiatives.

• Incident Escalation: Second line of escalation for network security incidents, as well as specific security Service and Portfolio Requests i.e. Meraki configuration and firewall changes.

• On Call Rota: Participate in on-call rota and occasionally work out of regular business hours to facilitate change management and incident resolution.

• Secure Network Configurations: Establish and maintain secure network configurations including Cisco Meraki and Palo Alto firewalls, routers, switches, and VPNs.

• Firewall and Access Review: Periodically review firewall rules and user access to the network.

• Continuous Improvement: Focus on continuous improvement through automation and tooling.

• Monitoring and Analysis: Collaborate with Security Operations to monitor and analyse network traffic for malicious activity or potential breaches.

• Access Controls: Implement network access controls to ensure only authorised users and devices can access specific network segments.

• Vulnerability and Patch Management: Identify and manage the remediation of network vulnerabilities and upgrades to ensure the highest standards of network security. This includes vulnerability management of the store Meraki estate. Perform robust patch management for network devices.

• IT Values Commitment: Champion and commit to performing the role within recognised Values & Behaviours.

What you'll bring

• Advanced Expertise in network solutions including MPLS, Internet, Cloud services, Firewalls, Routers, switches, Palo Alto, Meraki, and Cisco services.

• Bachelor's degree in relevant field and/or industry recognised certifications i.e. Cisco Certified Network Associate (CCNA).

• Proficiency in establishing secure network configurations, including firewalls, routers, switches, and VPNs.

• Experience with network access controls, vulnerability and patch management.

• Experience in implementing network-security solutions.

• Excellent verbal and written communication skills to articulate technical concepts to both technical and non-technical stakeholders.

• Expertise in monitoring and analysing network performance and incidents.

• Previous experience participating in on-call rotations and managing out-of-hours incidents effectively.

• Strong analytical skills to assess complex technical problems and develop effective solutions.

• Expertise in troubleshooting and resolving network security-related issues.

• Ability to work closely with cross-functional teams, including architecture, infosec and regional implementation teams.

• Dedication to performing the role within recognised values and behaviours.

Summer-Browning Associates is currently supporting our public sector client, who is seeking a Network Security Engineer for an initial twelve-month assignment with the option to extend.

Location: Hybrid working - Kidlington or Southampton

About the role: You will be responsible for day-to-day operation and control of all aspects of the client's sites and local area communications network infrastructure including Voice.

The ideal candidate will hold Active SC and have a strong background in delivery Network & Security support, with the following skills and experience:

• Experience with Checkpoint, Fortinet, Cisco & Solarwinds.
• Knowledge of IT and Voice Networks.
• Holds a recognised IT Networking qualification, or equivalent experience.
• Knowledge of Networking protocols & standards.

Network Security Engineer (SEA – Security Engineering Authority, Firewall, Checkpoint, Juniper, F5)

6 Month Contract

West Midlands (Hybrid)

£(Apply online only)/day (Outside IR35)

SEA – Security Engineering Authority Senior Network Security Designer/ Lead Engineer needed with active SC Security Clearance Firewall Specialist .                            6 Month Contract based in Warwick (Hybrid). Start ASAP in September/October.

Network Security Lead Engineer / Security Engineering Authority SEA (Firewall Specialist – Checkpoint, Juniper, F5, Bluecoat)

The vast majority of work is expected to be remote. There may be occasional travel to customer sites to Data Centres in West/South England. Once or twice a month on average.

Working with a global IT Consultancy on large-scale network solutions projects for a Telecoms end client.

Key skills, experience + tasks will include:

• Technical Ownership of a Telecoms end client's Network Security Infrastructure estate, processes, documentation + lifecycle management .
li>Design of customer networks including input into High-Level and Low-Level design (HLD/LLD).
• Network Security Engineer / Security Engineering Authority SEA (Firewall Specialist – Checkpoint, Juniper, F5, Bluecoat)
< i>Acting as the technical point of contact for all Network Security related projects, changes and modifications, including firewall rules base.
• Point of escalation and link to vendor support for Network Security infrastructure incidents.
• Technical Environment: Strong experience Checkpoint, Juniper, Bluecoat, F5 , Cisco networking, Cisco IPT / QoS / 802.1x, switches, wireless, Inflobox DNS, SSL VPN, DMVPN, IPsec, WAN, routing protocols.
• Technical support, change management (physical/remote), customer inventory management, EOL, hardware, software.
• Ensures designs and implementations comply with enterprise security policies, standards, and regulatory requirements.
• SC Security Clearance is essential for this contract.

Team purpose

We are here to change lives through better sight and hearing by delivering outstanding value, being loved by every customer and creating the place where all colleagues are proud to belong as we grow our business.

The Network Platform team will own and develop (with the Enterprise Architecture team) the strategic network roadmap. Delivering changes, product development and maintenance required to achieve the objectives of the roadmaps. The team will also provide support and technical expertise in the case of a major incident. They work closely with third-party partners to deliver a safe, resilient, robust Network Platform and continuously review the industry and market, testing new concepts and technologies that can add value.

Your purpose

The Network Security Engineer supports the Lead Network Security Engineer in delivering the Network Security Roadmap. This role supports the implementation of Infosec-driven initiatives and acts as the second line of escalation for Network Security Incidents and ad hoc service and portfolio support requests. This role is accountable for establishing and maintaining secure network configurations, including firewalls, routers, switches, and VPNs, and periodically reviewing firewall rules and user access to the network. The Network Security Engineer focuses on continuous improvement through automation and tooling, working with Security Operations to monitor and analyse network traffic for malicious activity or potential breaches. Additionally, this role implements network access controls, enforces robust patch management for network devices, and works with network security partners to identify network vulnerabilities, planning and implementing upgrades to ensure the highest standards of network security.

This role is required to participate in an on-call rota for out-of-hours escalations for the Global Network Team.

Your role

• Support Network Security Roadmap: Assist in delivering the Network Security Roadmap.

• Subject Matter Expertise: Provide network subject matter expertise on Infosec-driven initiatives.

• Incident Escalation: Second line of escalation for network security incidents, as well as specific security Service and Portfolio Requests i.e. Meraki configuration and firewall changes.

• On Call Rota: Participate in on-call rota and occasionally work out of regular business hours to facilitate change management and incident resolution.

• Secure Network Configurations: Establish and maintain secure network configurations including Cisco Meraki and Palo Alto firewalls, routers, switches, and VPNs.

• Firewall and Access Review: Periodically review firewall rules and user access to the network.

• Continuous Improvement: Focus on continuous improvement through automation and tooling.

• Monitoring and Analysis: Collaborate with Security Operations to monitor and analyse network traffic for malicious activity or potential breaches.

• Access Controls: Implement network access controls to ensure only authorised users and devices can access specific network segments.

• Vulnerability and Patch Management: Identify and manage the remediation of network vulnerabilities and upgrades to ensure the highest standards of network security. This includes vulnerability management of the store Meraki estate. Perform robust patch management for network devices.

• IT Values Commitment: Champion and commit to performing the role within recognised Values & Behaviours.

What you'll bring

• Advanced Expertise in network solutions including MPLS, Internet, Cloud services, Firewalls, Routers, switches, Palo Alto, Meraki, and Cisco services.

• Bachelor's degree in relevant field and/or industry recognised certifications i.e. Cisco Certified Network Associate (CCNA).

• Proficiency in establishing secure network configurations, including firewalls, routers, switches, and VPNs.

• Experience with network access controls, vulnerability and patch management.

• Experience in implementing network-security solutions.

• Excellent verbal and written communication skills to articulate technical concepts to both technical and non-technical stakeholders.

• Expertise in monitoring and analysing network performance and incidents.

• Previous experience participating in on-call rotations and managing out-of-hours incidents effectively.

• Strong analytical skills to assess complex technical problems and develop effective solutions.

• Expertise in troubleshooting and resolving network security-related issues.

• Ability to work closely with cross-functional teams, including architecture, infosec and regional implementation teams.

• Dedication to performing the role within recognised values and behaviours.

Summer-Browning Associates is currently supporting our public sector client, who is seeking a Network Security Engineer for an initial twelve-month assignment with the option to extend.

Location: Hybrid working - Kidlington or Southampton

About the role: You will be responsible for day-to-day operation and control of all aspects of the client's sites and local area communications network infrastructure including Voice.

The ideal candidate will hold Active SC and have a strong background in delivery Network & Security support, with the following skills and experience:

• Experience with Checkpoint, Fortinet, Cisco & Solarwinds.
• Knowledge of IT and Voice Networks.
• Holds a recognised IT Networking qualification, or equivalent experience.
• Knowledge of Networking protocols & standards.

• Design, configure, and manage network security infrastructure, including firewalls, routers, switches, and wireless access points.
• Implement and maintain intrusion detection and prevention systems (IDPS), SIEM solutions, and endpoint security measures.
• Develop and enforce security policies, standards, and procedures across the network.
• Monitor network traffic for security threats and respond to security incidents in a timely and effective manner.
• Conduct regular vulnerability assessments and penetration testing to identify and remediate security weaknesses.
• Configure and manage VPN technologies to ensure secure remote access for employees.
• Stay up-to-date with the latest security threats, vulnerabilities, and mitigation techniques.
• Collaborate with IT teams to ensure security is integrated into all network infrastructure projects and deployments.
• Provide technical expertise and support for security-related issues.
• Develop and deliver security awareness training to employees.
• Maintain detailed documentation of network security configurations and incident response procedures.

• Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field.
• Minimum of 5 years of professional experience in network security engineering.
• Strong understanding of TCP/IP networking, routing protocols (BGP, OSPF), and network segmentation.
• Hands-on experience with leading firewall vendors (e.g., Cisco, Palo Alto Networks, Fortinet).
• Proficiency with IDPS, SIEM tools, and vulnerability scanning software.
• Experience with VPN technologies (e.g., IPSec, SSL VPN).
• Relevant security certifications such as CompTIA Security+, CISSP, CCNA Security, or equivalent are highly desirable.
• Excellent problem-solving, analytical, and critical thinking skills.
• Strong communication and interpersonal skills, with the ability to work effectively in a remote team.
• Ability to work independently and manage multiple security projects simultaneously.

• Design, deploy, and maintain network security infrastructure, including firewalls, intrusion detection/prevention systems (IDPS), VPNs, and access control systems.
• Monitor network traffic for security threats and anomalies using SIEM and other security tools.
• Investigate and respond to security incidents, performing root cause analysis and implementing corrective actions.
• Develop and enforce network security policies, standards, and procedures.
• Conduct regular security audits and vulnerability assessments of network infrastructure.
• Collaborate with IT teams to ensure security is integrated into all network design and deployment phases.
• Manage and update security configurations for routers, switches, and other network devices.
• Implement and maintain secure remote access solutions for employees and partners.
• Stay informed about the latest security threats, vulnerabilities, and mitigation techniques.
• Provide technical guidance and support on network security best practices.
• Contribute to the development and execution of disaster recovery and business continuity plans.
• Maintain accurate documentation of network security architecture, configurations, and procedures.

• Proven experience as a Network Security Engineer or in a similar security-focused role.
• In-depth knowledge of network protocols, TCP/IP, and network security principles.
• Hands-on experience with firewall management, VPN technologies, and IDS/IPS solutions.
• Familiarity with SIEM tools (e.g., Splunk, LogRhythm) and security monitoring techniques.
• Understanding of security vulnerabilities and common attack vectors.
• Excellent analytical and problem-solving skills.
• Strong communication and collaboration abilities.
• Ability to work under pressure and respond effectively to security incidents.
• Relevant certifications such as CISSP, CCNA Security, or equivalent are highly desirable.
• Experience with cloud security principles is a plus.
• Bachelor's degree in Computer Science, Information Technology, or a related field.