Salary: £24,500 - 42,000 per year Requirements: Professional certifications such as CCNA, CCNP, or extensive knowledge of Checkpoint and Cisco Firewalls, and F5 Load Balancers and associated management software (CSM, Checkpoint Smart Console) Minimum of 3 years of experience in network security or a related field Strong understanding of network infrastructure, including LAN/WAN, routers, switches, and related network devices Expertise in security protocols, cryptography, authentication, authorisation, and security Excellent analytic and problem-solving skills, with the ability to make well-informed security decisions Strong communication and interpersonal skills, with the ability to effectively communicate technical information to non-technical stakeholders Understanding of ITIL methodologies and best practices LAN/WAN (Cisco CCNA) or 5 years experience Responsibilities: Provide operational support for network security infrastructure Monitor network performance and ensure system availability and reliability Troubleshoot complex networking issues that may involve multiple systems and layers of infrastructure Perform system maintenance and system upgrades including service packs, patches, hot fixes, and security configurations Be involved in the planning, design, and implementation of network security measures to protect systems and data Conduct regular system audits to identify vulnerabilities and ensure compliance with security policies and regulations Deploy and maintain network security devices such as firewalls, intrusion detection systems, and VPNs Support the resolution of network security incidents, including conducting post-event analyses to prevent future incidents Stay abreast of the latest cybersecurity threats and trends, as well as advancements in network security technologies Develop and enforce policies and procedures for network access, monitoring, and security incident response Technologies: Cryptography Cisco Support ITIL LAN Network Security Mobile Office 365 More: At M Group Telecom, we are enabling and enhancing telecom networks, playing a lead role in the delivery of a tech-enabled future. We offer a range of benefits designed to support your life in and out of work, including a matched pension scheme, online GP service, employee assistance programme, and annual leave. As one of the Top 100 UK companies actively supporting and recruiting army veterans, we strive to create an inclusive environment where everyone belongs. Join us for an exceptional opportunity to grow and develop within a respectful and collaborative workplace. last updated 14 week of 2026