This is a permanent, full-time role reporting directly to the Head of IT. The successful candidate will be responsible for building and leading a team to safeguard and enhance secure environments, adhering to best practices and ensuring compliance with Defence sector standards. Key Responsibilities: Team Leadership and Development: Lead, mentor, and manage a team including a network/firewall engineer, fostering a culture of innovation, collaboration, and security excellence. Oversee performance management, training, and professional development within the team. Cybersecurity Strategy and Implementation: Define and implement cybersecurity strategies to protect secure development and IT environments. Ensure adherence to Defence sector regulations, NIST 800-171 & 172 (CMMC CUI), NCSC, Cyber Essentials and Cyber Essentials Plus. Infrastructure Oversight: Provide guidance on the design, deployment, and maintenance of secure network architectures to support systems holding sensitive information. Manage proactive monitoring and reactive support for secure networks. Policy and Compliance: Develop, implement, and maintain robust cybersecurity policies, procedures, and standards. Ensure compliance with relevant national and international security standards. Conduct and manage compliance audits (internal and external) timely and accurately. Incident Management: Oversee the resolution of complex network and cybersecurity incidents, ensuring minimal impact on operations. Conduct post-incident reviews and implement measures to prevent recurrence. Stakeholder Engagement: Collaborate with internal and external stakeholders, including Defence clients, to understand security requirements and deliver solutions. Act as the primary point of contact for cybersecurity matters within the organisation. Job Requirements: Proven experience in cybersecurity leadership roles, preferably within the Defence sector. Strong knowledge of secure networking, including IP switching, routing, subnetting, VLANs, and firewalls. Familiarity with Palo Alto and Aruba networking equipment, Enterprise Catapans, Darktrace and Zero-Trust Network technologies. Experience with Common Internet Standards (CIS L1, L2, L3). In-depth understanding of DevSecOps principles and secure environment management. Relevant certifications (CISSP, CISM, or equivalent). Azure security accreditation is advantageous but not essential. SC Clearance is required If you are an experienced Cyber Security Manager seeking a challenging role within the Defence sector, we encourage you to apply now to join our client's dynamic team on-site in Buckinghamshire.