Senior Cyber Security Engineer

Senior Cyber Security Engineer We are seeking an experienced Senior Cyber Security Engineer to support a defence client in a hands on role combining security engineering, threat detection and incident response.

This opportunity would suit a technically strong cyber security professional with experience across both offensive and defensive security, capable of operating independently while working closely with infrastructure and wider IT teams to strengthen security across hybrid environments.

Key Responsibilities

• Monitor and manage security alerts across endpoint detection and response (EDR/XDR), Data Loss Prevention (DLP) and conditional access.


• Conduct daily security checks, review vulnerability scans, manage tickets and maintain accurate security logs.


• Support vulnerability remediation activities, working alongside infrastructure engineers to address identified risks.


• Contribute to Microsoft-centric security projects and help improve the organisation’s security posture.


• Support email security, privileged access management, password management and Microsoft Sentinel capabilities.


• Participate in IT change management processes, including representing security requirements at change boards.


• Identify, investigate and respond to potential threats and incidents across on-premises and cloud environments.


• Ensure security controls align with relevant regulatory, compliance and governance standards.

Essential Experience

• Strong experience across both red and blue team activities, with a practical understanding of purple teaming.


• Experience with vulnerability management, remediation and current cyber security threats.


• Hands-on knowledge of EDR/XDR, email security and Data Loss Prevention.


• Familiarity with Microsoft-based environments, including Microsoft Sentinel and conditional access.


• Understanding of privileged access management and password management solutions.


• Experience working across hybrid on-premises and cloud environments.


• Awareness of IT change management processes and security-related regulatory and compliance standards.


• Excellent communication skills, with the ability to work independently and collaborate effectively with technical stakeholders.

Desirable Experience

• Exposure to Operational Technology (OT) environments.


• Networking expertise, particularly next-generation firewalls.

If you have hands on technical expertise and practical security mindset required for this role, we would welcome a conversation.