Defender Administrator - Fully Remote - Inside IR35 - 6 months

Defender Administrator - Fully Remote - Inside IR35 - 6 months

We are seeking an experienced Defender Administrator to lead the migration of Windows 10 endpoints from Legacy antivirus solutions (Symantec, McAfee) to Microsoft Defender for Endpoint (ATP). This critical role requires hands-on expertise in deploying, configuring, and managing Defender security controls, as well as strong problem-solving skills to investigate threats, remediate incidents, and collaborate with cross-functional teams to ensure secure and compliant endpoint protection

Key Responsibilities:

• Lead endpoint migration from Symantec/McAfee to Microsoft Defender for Endpoint (ATP), including deployment via GPO, SCCM, or Intune and removal of Legacy AV solutions.
• Configure and administer Defender policies (AV, EDR, ASR, AIR), dashboards, exclusions, and reporting to ensure secure and compliant endpoint protection.
• Monitor, investigate, and remediate threats using Defender EDR, Threat & Vulnerability Management, and automated remediation to resolve high-priority security issues.
• Collaborate with cross-functional teams and stakeholders to provide end-to-end Defender support, documentation, and continuous security improvement.

What You Will Ideally Bring:

• SC Clearance (preferred)
• Proven expertise in Microsoft security technologies, including Defender for Endpoint, O365, Identity, and Cloud App Security, with hands-on experience onboarding and managing Windows 10 devices.
• Strong background in Legacy AV solutions (Symantec, McAfee) with the ability to plan and execute smooth migrations to Microsoft Defender.
• Deep knowledge of endpoint security operations, including EDR, Threat & Vulnerability Management, attack surface reduction, and incident investigation/remediation.
• Collaborative and problem-solving mindset, with the ability to work across infrastructure, application, and client teams while providing clear communication and support.

Contract Details

• Duration: 6 months (with view to extend)
• Day Rate: Up to £450 per day (Inside IR35)
• Location: Fully Remote (occasional travel to Gloucester and Warrington)
• Start Date: ASAP

Defender Administrator - Fully Remote - Inside IR35 - 6 months