Cyber Security Lead

Cyber Security Lead

Location: London (Hybrid)

Salary: £100,000 + Bonus + Excellent Benefits

My client is a highly successful international organisation, looking for a Cyber Security Lead to join them.

We are seeking a highly skilledCyber Security Lead to take ownership of our client’s enterprise security posture across Microsoft cloud, identity, and endpoint environments. This role is ideal for a hands-on Cyber security professional, who can combine hands on engineering depth with leadership and strategic oversight.

This will be a very greenfield environment, having experience building a Security function from scratch will be essential to this role. You will be the expert and have proven experience of managing major cyber incidents end-to-end. There will be a junior colleague to help and mentor but the core expertise of the role will come from you and help push the company forward in this next phase of growth.

As aCyber Security Lead, you will lead the delivery of the cyber security roadmap, strengthen detection and response capabilities, and act as the technical authority for all Microsoft security technologies. Working closely with Infrastructure, Cloud, and Architecture teams, you will ensure security controls are embedded, effective, and continuously improved.

This role is well suited to Cyber Security Leads, Heads of Cyber, Cyber Security Managers, Security Operations Leads, and Technical Security Managers - people who enjoy leading from the front, while remaining hands-on and close to the action.

Key Responsibilities:

• Lead the design, implementation, and optimisation of security controls across Microsoft Defender, Intune, Entra ID, Azure, and M365.
• Own and evolve Conditional Access, identity protection, device compliance, and endpoint hardening strategies.
• Act as the technical lead for cyber incidents, supporting investigation, containment, and recovery activities.
• Oversee vulnerability management, ensuring prioritisation and remediation aligned to business risk.
• Manage and enhance security baselines, configuration standards, and policy enforcement across the estate.
• Lead continuous improvement initiatives across detection, response, automation, and cloud security posture.
• Support governance activities including risk assessments, audits, and compliance reviews.

Technical Experience:

• Strong hands-on experience with Microsoft Defender XDR, Intune, Entra ID, Azure security controls, and Microsoft Sentinel.
• Proven ability to design and implement Conditional Access, identity protection, and device compliance policies.
• Experience developing detection rules, analytics, and automation using KQL and Sentinel playbooks.
• Solid understanding of Zero Trust architecture and practical implementation across enterprise environments.
• Strong knowledge of endpoint hardening, EDR tuning, and modern attack techniques.
• Relevant certifications (e.g., SC-200, SC-300, AZ-500, MS-102, CISSP) are highly desirable.

Please note: this role does not offer visa sponsorship.

Key Words: Cyber Security Lead, Senior Security Engineer, Security Operations Lead, Technical Security Manager, Security Engineering Lead, Microsoft Security, Defender, Intune, Entra, Azure, Sentinel, Endpoint Security, Cloud Security, Identity Security, Zero Trust, Vulnerability Management, Incident Response, Operational Excellence, Security Strategy.