Security Architect

4 days ago


City Of London, United Kingdom Experis UK Full time

Security Architect (Detection Engineering & Technical Lead) Location: London (onsite 4 days/week) Duration: 3 months - with extensions Contract type: Inside IR35 – Umbrella only Security Clearance: Active SC cleared or eligible candidates will be considered Purpose: Technical owner of SIEM/XDR architecture, responsible for migrating LogRhythm to Sentinel, migrating AV to MDE, building detections, integrations, and automation, and shaping the SOC technology roadmap. Key Requirements Deep hands‑on expertise with Microsoft Sentinel (KQL, analytic rules, UEBA, SOAR). Proven experience migrating from LogRhythm or another legacy SIEM to Sentinel. Strong experience building and tuning detections mapped to MITRE ATT&CK. Experience migrating Trend Micro → Microsoft Defender for Endpoint. Knowledge of integrating Trellix/McAfee, CyberArk, identity logs, cloud logs, and endpoint telemetry. Ability to design ingestion pipelines, schemas, normalisation and enrichment. Strong threat hunting and detection engineering background. SC clearance desirable. Profile needed: Senior SIEM/XDR engineer capable of architecting, building, and optimising a modern Microsoft‑led SOC stack. Seniority level: Mid‑Senior level Employment type: Contract Job function: Information Technology Industries: Staffing and Recruiting #J-18808-Ljbffr


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