Contract Senior Security Engineer: Azure & SIEM

Company: Flagstone Group
Apply for the Contract Senior Security Engineer: Azure & SIEM
Location: London
Job Description:

Flagstone Group is seeking a senior security engineer to own and enhance cloud security, SIEM, and threat detection across Azure. You will operate Sentinel, Defender for Cloud, and contribute to detection-as-code.

The role emphasizes hands-on leadership, impact, and coordinating security across engineering squads. The ideal candidate brings deep SIEM expertise, strong Azure security experience, and experience with Terraform or Bicep in a fintech environment.

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Posted: September 10th, 2026