Cyber Manager

Job Title: Cyber Security Manager

Location: Maidenhead/ Southeast – regular travel between Entities

Role Overview

We are seeking an experienced and adaptableCyber Security Manager to strengthen cyber resilience, lead security improvements, and embed secure-by-design practices across a diverse range of technical estates. This includes Defence-classified networks, legacy and industrial systems, hybrid IT/OT environments, research platforms, and modern cloud services.

Key Responsibilities

1. Cyber Security Strategy, Planning & Delivery

• Develop, maintain, and execute cyber security plans and roadmaps tailored to each entity’s operational context, regulatory requirements, and risk profile.
• Provide informed security input into business planning, technology adoption, digital initiatives, and transformation programmes.
• Ensure cyber activities support wider organisational objectives, customer expectations, and contractual obligations.

2. Secure-by-Design & Architecture Assurance

• Embed secure-by-design principles across platforms, services, products, and transformation initiatives.
• Review solution designs, technical architectures, and configuration proposals to ensure appropriate security controls and alignment with best practice.
• Provide early engagement and continuous assurance to engineering, IT, OT, digital development teams, and research groups.

3. Cyber Governance & Compliance

• Implement and continuously improve cyber governance frameworks, processes, and metrics suitable for small, agile organisations operating in sensitive environments.
• Manage and maintain entity-level cyber risk registers, ensuring clear visibility, prioritisation, and mitigation progress.
• Ensure alignment with key standards and regulatory frameworks including:
• NCSC guidance and CAF
• ISO 27001
• NIST CSF
• Cyber Essentials Plus
• Secure by Design principles
• Work with procurement to ensure cyber requirements are appropriately flowed down to suppliers, partners, and third-party service providers.

4. Operational Cyber Security Management

• Oversee operational security activities across multiple entities, including:
• Threat detection and monitoring
• Incident response and remediation
• Vulnerability identification and patch management
• Endpoint protection and hardening
• Network and boundary defence
• IDS/IPS tuning, configuration, and alert handling
• Ensure operational security tools, processes, and monitoring capabilities are effectively deployed and maintained.

5. Management of Classified & High-Security Environments

• Govern cyber controls and practices for systems handling Official-Sensitive and above.
• Ensure appropriate physical, procedural, and technical controls are in place across secure research, prototyping, and engineering environments.
• Ensure that classified systems adhere to the appropriate Defence standards, accreditation requirements, and audit expectations.

6. IT & OT Security Integration

• Lead the integration of cyber controls across mixed technology estates, including:
• Traditional IT
• Operational Technology (OT)
• Industrial Control Systems (ICS)
• Legacy and bespoke engineering platforms
• Provide risk-based guidance that accounts for operational constraints and system criticality.

7. Customer Assurance & Stakeholder Engagement

• Act as the central point of cyber expertise for internal entities, customers, and auditors.
• Produce high-quality reporting, assurance documentation, and security evidence packs for customer programmes and assessments.
• Support contract negotiations and customer engagements where cyber security obligations or expectations are discussed.

8. Collaboration & Leadership

• Work closely with IT, OT, engineering, digital development, legal, procurement, programme delivery, and operations teams to embed security throughout the lifecycle.
• Contribute to the development of cyber culture and awareness across the entities supported.
• Provide leadership, mentoring, and task direction to cyber specialists and third-party providers.

Qualifications & Experience

Essential

• 8+ years’ experience in cyber security roles within complex, secure, or regulated environments (e.g., defence, government, national security, critical infrastructure, aerospace, research).
• Demonstrable experience managing cyber security in high-assurance and classified system environments.
• Strong experience across security operations, incident response, vulnerability management, and threat detection.
• Technical knowledge of:
• Identity management and access controls
• PKI and cryptographic services
• SIEM platforms and log analytics
• Firewalls, boundary protection, and secure networking
• Endpoint security and system hardening
• Hands-on implementation experience of frameworks such as:
• NIST CSF
• ISO 27001
• CIS Controls
• Cyber Essentials (Plus)
• Secure by Design / Security by Design
• Proven ability to balance strategic thinking with tactical execution.
• Experience working with OT and legacy systems, including industrial or research environments...

Skills & Competencies

• Able to pivot betweenstrategic engagement (roadmaps, governance, risk, leadership support) andhands-on operational delivery (tooling, response, reviews, configurations).
• Strong analytical, organisational, and communication skills.
• Comfortable advising senior leaders and collaborating across multi-disciplinary teams.
• Experience building positive security cultures in small, innovative organisations.
• Practical mindset, able to deliver effective security outcomes in constrained or agile environments.

Desirable

• Background in defence, aerospace, national security, or critical national infrastructure.
• Familiarity with Defence security policies and standards including:
• DefStan 05-139
• DefCon 658
• DefStan 05-138
• JSP453 / JSP604
• Experience supporting MOD accreditation and assurance processes.
• Experience with Microsoft Azure security, including identity, governance, monitoring, hybrid integration, and Azure-native security controls.
• Professional certifications such as CISSP, CISM, CISA, SABSA, GICSP, or cloud security certifications (e.g., Azure Security Engineer).