LA International Computer Consultants Ltd

Contractor job Defender Administrator

Warrington (WA1 1NB)

LA International Computer Consultants Ltd

Job position

Contractor
As soon as possible
2 months
£400-450
< 2 years experience
Hybrid
WA1 1NB, Warrington, England, United Kingdom
Published on 07/01/2026

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***SC CLEARED***
Defender Administrator
2 Month contract initially
Based: Hybrid, with onsite in Warrington or Gloucester
Rate: £400 - £450 p/d - (via Umbrella company)

We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Defender Administrator to join the team.

Key Responsibilities:
To Migrate Symantec/McAfee Legacy Antivirus Solution to Microsoft Windows Defender (ATP) on Windows and Linux servers.
Responsible-
* To validate the current AV exclusion policy in estate.
* Implement MDE policies
* AAD devices group creation to implement exclusion and policy deployment.
* Creating migration approach that is best suited for complex nuclear sensitive environment.
* Network connectivity testing between source and destination.
* Defender Installation File creation and distribution.
* Leading discussion with the Image management team for MDE image that would be used for Auto scaling environment.

Key Skills & Experience:
* Hands on Experience onboarding MS and Linux server to Microsoft Defender
* Must have managed complex migration
* Must have AV exclusion management skills
* Have knowledge and experience with Microsoft technologies such as but not limited to: Microsoft Defender for server, Microsoft Defender for O365, Microsoft Defender for Identity, Microsoft 365 Defender and Microsoft Cloud App Security
* Good knowledge around server Detection and Response (EDR), Threat & Vulnerability Management (TVM), Attack Surface Reduction (ASR), and Auto Investigation and Remediation (AIR)
* Experience with Symantec server Protection (SEPM)
* Experience in McAfee/ Windows Defender Antivirus Policy, Group and Task Configuration
* In depth knowledge of Windows operating systems including Client (7/8/10) and Server OS (2008/2012/2016) and Linux - RHEL
* Documenting the deployment approach
* Documenting and creating MDE policy
* Investigative and analytical problem-solving skills across Windows Infrastructure
* Developing, coordinating, and maintaining organizational security procedures, processes, and practices and supporting security documentation activities.
* Remove legacy Antivirus solution from Servers
* Hands on Experience in deploying ATP Package through GPO, SCCM or through Intune
* Good Understanding of Threat analysis, Threat Hunting, and remediating security issues on End Points
* Hands on Experience on Creation of Policy, file Exclusions, Monitoring Dashboard, Reporting. etc
* End to end Support Coverage for Microsoft Defender
* Ensure High level of Security controls are deployed on end points as per the best practices

This is an excellent opportunity on a great project of work, If you are looking for your next exciting opportunity, apply now for your CV to reach me directly, we will respond as soon as possible.


Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take up to a minimum 10 weeks. LA International is a HMG approved ICT Recruitment and Project Solutions Consultancy, operating globally from the largest single site in the UK as an IT Consultancy or as an Employment Business & Agency depending upon the precise nature of the work, for security cleared jobs or non-clearance vacancies, LA International welcome applications from all sections of the community and from people with diverse experience and backgrounds.

Award Winning LA International, winner of the Recruiter Awards for Excellence, Best IT Recruitment Company, Best Public Sector Recruitment Company and overall Gold Award winner, has now secured the most prestigious business award that any business can receive, The Queens Award for Enterprise: International Trade, for the second consecutive period.

Stoke-on-Trent, United Kingdom
100 - 249 employees
Recruitment agency
Whether you’re aiming for your next contract or permanent role, we connect you to opportunities across the digital and technology landscape in both public and private sectors. With eight specialist Divisions and a single-site team of highly experienced consultants, you get personalised support backed by deep sector expertise. Already security-cleared? Our in-house Security Vetting Department can transfer your clearance quickly and smoothly. New to cleared environments? Our Enhanced Government Security Accreditation allows us to sponsor new clearances, opening doors to career-defining roles. Operating across 90 countries and 5 continents, and supporting candidates for over 40 years, we don’t just help you find a job, we help you build a career.

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Defender Administrator

LA International Computer Consultants Ltd

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