Remote Security Engineer: Defender XDR & Sentinel Expert

Company: Hamilton Barnes Associates Limited
Apply for the Remote Security Engineer: Defender XDR & Sentinel Expert
Location: London
Job Description:

Hamilton Barnes Associates Limited is seeking an experienced Security Engineer to join its Security Operations function. The role focuses on Microsoft Defender XDR, Microsoft Sentinel, and Microsoft 365 security, with client exposure and a primary remote work setup with occasional London or Cardiff office visits.

You will design and optimise security controls, develop detections, manage vulnerability assessments, and contribute to incident response.

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Posted: September 5th, 2026