Senior Network Security Engineer
We are seeking an experienced Senior Network Security Engineer to design, implement and maintain secure, resilient network infrastructure across complex enterprise environments. In this role, you will provide technical leadership for network security initiatives, ensuring that systems, services and data are protected against evolving cyber threats while supporting business continuity and operational performance. You will work closely with infrastructure, cloud, architecture, operations and risk teams to develop effective security solutions aligned with organisational policies and industry best practice.
Key responsibilities will include designing and administering firewalls, intrusion prevention and detection systems, secure remote access, network segmentation, web and email security controls, and security monitoring platforms. You will lead the investigation and resolution of complex network security incidents, perform vulnerability assessments, review logs and alerts, and recommend improvements to reduce risk. The role will also involve developing and maintaining security standards, technical documentation, network diagrams and operating procedures, as well as contributing to incident response, disaster recovery and change management activities. You may also support audits, compliance reviews, security testing and the evaluation of new technologies and services.
Applicants should have substantial experience in network security engineering within a large or technically complex environment, with strong knowledge of TCP/IP, routing and switching, DNS, VPN technologies, network access control and secure architecture principles. Hands-on experience with enterprise firewalls, SIEM platforms, cloud networking and security tooling is highly desirable. Professional certifications such as CISSP, CCNP Security, PCNSE, Fortinet NSE or equivalent would be advantageous. You will need strong analytical and problem-solving skills, the ability to communicate technical matters clearly to both technical and non-technical audiences, and a proactive approach to identifying and addressing security risks. Experience mentoring colleagues and leading technical projects will also be valued.
Senior Network Security Engineer
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