Dec 24, 2025
Job Title: Defender Administrator (Contract)
Location: Gloucester or Warrington (Hybrid on-site)
Rate: £370/Day Inside IR35
Clearance: Must hold or be eligible for Security Clearance (minimum 5 years UK residency)
About the Role
We are recruiting an experienced Defender Administrator to support a large-scale migration programme, transitioning Windows and Linux servers from legacy antivirus solutions (Symantec/McAfee) to Microsoft Defender (ATP). You will play a key role in designing and implementing migration approaches within a complex and sensitive environment.
Key Responsibilities
* Migrate Windows and Linux servers to Microsoft Defender (ATP).
* Validate existing antivirus exclusion policies across the estate.
* Implement MDE policies and create AAD device groups.
* Develop migration approaches suitable for complex and sensitive infrastructures.
* Perform network connectivity testing and ensure readiness for deployment.
* Create and distribute Defender...
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Inside IR35
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CV-Library
Gloucester, Gloucestershire
Contractor