Senior Microsoft Security Specialist
Job in
City, Vale of Glamorgan, Wales, UK
Listed on 2026-01-27
Listing for:
Synapri
Full Time
position Listed on 2026-01-27
Job specializations:
-
IT/Tech
Cybersecurity, Security Manager, Cloud Computing, Systems Engineer
Job Description & How to Apply Below
Synapri are supporting a globally recognised leader in technology services and digital transformation with hiring a Senior Security SME to take ownership of advanced security engineering, escalated incident response, and threat hunting across a Microsoft-centric SIEM and XDR environment.
This is a hands-on L3 role focused on Microsoft Sentinel and the Microsoft Defender XDR suite, acting as a technical authority within the SOC and supporting the ongoing expansion of security tooling and controls.
Responsibilities:
- Engineering and optimising Microsoft Sentinel, including log onboarding, connectors, parsers, and data normalisation
- Monitoring and optimising Sentinel and Defender licensing and ingestion costs
- Designing automated response and SOAR workflows using Sentinel playbooks
- Leading complex incident investigations and advanced threat response
- Proactive threat hunting using KQL and developing custom detections aligned to MITRE ATT&CK
- Producing clear incident reports, dashboards, and technical documentation
Experience required:
- Strong hands-on experience in cybersecurity operations
- Deep expertise in Microsoft Sentinel and Microsoft Defender XDR
- Advanced KQL skills and SIEM data integration experience
- Knowledge of Azure and Microsoft 365 security services
- Scripting experience with Power Shell and/or Python
This is an excellent opportunity for a senior security professional to make real impact in a modern, evolving Microsoft security environments.
Please apply for more details!
Position Requirements
10+ Years
work experience
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