Senior Security Engineer

Ready to lead complex security operations, shape detection strategy, and be the go-to expert for Microsoft Sentinel and Defender XDR? Join my international client and take ownership of advanced engineering, threat hunting, and incident response in a modern, cloud-first environment.

My client is an international Consultancy firm, specialist in Cyber Security and looking for a Senior Security Engineer to take a lead role in advanced engineering work for SIEM and XDR, escalated security incident response, and advanced threat hunting.

What this job is really about

• Owning Microsoft Sentinel and Defender XDR so they work for you, not the other way round: shaping the data, the rules, the playbooks, and the signal-to-noise ratio.
• Being the L3 brain in the room when things go sideways: complex incidents, odd behaviours, multi-cloud weirdness – you investigate, correlate, and close.
• Turning threat hunting into a habit, not a once-a-month exercise: building KQL hunts, mapping to MITRE ATT&CK, and turning interesting patterns into hardened detections.
• Making the SIEM/XDR bill make sense: understanding ingestion, licensing, and where to cut noise without cutting visibility.

Who this will suit

• You’ve already run security operations with Microsoft Sentinel and the Defender suite and understand how to onboard and manage log sources properly.
• You’re comfortable designing security architecture in Azure/M365, integrating cloud-native controls, and wiring in threat intel.
• KQL is second nature; PowerShell or Python are tools you reach for without thinking.
• You’re happy explaining trade-offs between cost and coverage and backing it up with data.
• You can mentor others, push back when needed, and stay calm in the middle of a messy incident.

Bonus points

• SC-200, AZ-500, GCIA, GCIH or similar.
• Experience leading or coaching SOC teams or security engineers.

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates.

About the job

• Contract Type: Permanent
• Specialism: Technology & Digital
• Focus: Information Security
• Industry: IT
• Salary: £70,000 – £90,000 per annum + plus bonus
• Workplace Type: Hybrid
• Experience Level: Mid Management
• Location: Manchester
• Job Reference: EWHQGJ-1664CCD2
• Date posted: 10 February 2026

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