Senior Security Engineer(Hybrid)

Company: LT Harper Recruitment Group
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Technical Cyber Security Engineer / Architect (Microsoft Sentinel & M365 Defender)£80,000 + Benefits2 days per week on-site | London or Manchester SC Clearance required – ESSENTIAL

A large national organisation is seeking a Technical Cyber Security Engineer / Architect (Microsoft Sentinel & M365 Defender) to join its Cyber and Infrastructure team, supporting the SOC (Security Operations Centre), permanently. This is a key role focused on strengthening cyber resilience across enterprise technology, helping to identify, defend against, and recover from evolving threats across cloud, network, and end-user environments.

The role You will work closely with security, infrastructure, and architecture teams to design and improve secure technology environments, support incident response, and help drive a security-by-design approach across the wider estate. This role will suit someone with strong experience across Microsoft Sentinel & M365 Defender , alongside broader cyber architecture, engineering, and security operations capability.

Key areas of focus Secure architecture across enterprise networks, cloud, and end-user environments Hands-on work with Microsoft Sentinel, M365 Defender , Defender for Cloud, Entra ID, and Conditional Access Supporting the SOC with incident response, vulnerability remediation and escalation Automating repeatable security tasks and improving operational efficiency Supporting compliance requirements, including PCI-DSS Acting as a senior point of support within the team, including during the principal’s absence What is needed Strong experience in Azure security and cyber architecture Strong hands-on knowledge of Microsoft Sentinel & M365 Defender (Entra ID is desirable) Experience across network security , cloud security and incident response Strong understanding of security operations, vulnerabilities and remediation SC Clearance is essential Relevant certifications such as SC-100, SC-200, CISSP, CEH and CCNA are highly desirable Package~£80,000k~ Excellent benefits~2 days per week on-site in London or Manchester~ Participation in an on-call rota for out-of-hours incident response…

Posted: June 1st, 2026