Technical Cyber Security Engineer / Architect (Microsoft Sentinel & M365 Defender)
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), on a contract basis. 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
- Inside IR35
- 2 days per week on‑site in London or Manchester
- Participation in an on‑call rota for out‑of‑hours incident response
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