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Whitehall Resources Ltd Logo Whitehall Resources Ltd · IT - Software Development

Microsoft Sentinel Solution Architect

United Kingdom, London · Job Posted July 03, 2026
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Job Description

Whitehall Resources are currently looking for a Microsoft Sentinel Solution Architect based in London for an initial 6 week contract. *** OUTSIDE IR35 ***

Job Responsibility

  • Provide hands on Microsoft Sentinel solution architecture support for a focused six-week review
  • Work directly with the client Product Owner and Security Architect to assess the current Sentinel design, use cases, architecture and enterprise integration model
  • Identify gaps, risks, constraints and improvement opportunities across data ingestion, detection logic, integrations, automation, operating model and scalability
  • Support client in shaping practical architecture recommendations, design decisions and prioritised next steps

Requirements

  • Strong Microsoft Sentinel solution architecture experience in large enterprise environments
  • Deep knowledge of SIEM architecture, security monitoring, detection engineering, log source onboarding and SOC integration
  • Experience reviewing Sentinel workspace design, connector strategy, analytics rules, KQL, automation rules, Logic Apps, playbooks, workbooks and incident workflows
  • Strong understanding of Microsoft security ecosystem integration, including Microsoft Defender, Entra ID, Azure, Microsoft 365, Defender for Cloud and endpoint telemetry
  • Experience integrating Sentinel with wider enterprise tooling, including cloud platforms, network security tooling, infrastructure logging, application logging, ITSM, case management and vulnerability management
  • Ability to assess monitoring use cases against enterprise threat models, security operations needs and cyber risk priorities
  • Strong architecture governance capability, able to produce clear findings, recommendations, design options and decision papers
  • Able to work hands on with product owners, security architects, engineers, SOC teams and platform teams

Nice to have

  • Experience with aviation, critical infrastructure or highly regulated enterprise environments
  • Experience aligning SIEM and monitoring designs to NCSC, CISA, MITRE ATT&CK, NIST or CIS guidance
  • Experience with Sentinel cost optimisation, log retention strategy, data tiering and ingestion prioritisation
  • Experience improving detection quality, reducing alert noise and strengthening incident enrichment
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