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 ATTandCK, 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.?