Senior Security Engineer
10 hours ago
Sheffield
Technical Cyber Security Engineer / Architect (Microsoft Sentinel & M365 Defender) £80,000 + Benefits 2 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