Senior SIEM & Sentinel Platform Engineer

CyberOne in London is seeking an experienced SIEM Content & Platform Engineer to join the Cyber Security team. You will design, develop and onboard detection content for Microsoft Sentinel, integrate with Defender XDR and scale telemetry across our enterprise.

You will work with Security Operations, Cloud and Infrastructure teams, build dashboards, run POCs, and support critical incidents. The role requires hands-on engineering, strong knowledge of MITRE ATT&CK, and a proactive delivery mindset.

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