Defender Administrator- Active SC Required

Job Title: Defender Administrator- Active SC Required

Location: Remote,UK

Duration: 3Months+

Rate: 450GBP/Day Inside IR35

Role Overview

We are looking for an experienced Microsoft Defender Administrator to join a major security transformation programme for a leading UK Energy client. The successful candidate will lead the migration from legacy antivirus solutions (McAfee/Symantec) to Microsoft Defender for Endpoint (MDE) across Windows and Linux server environments.

This role requires strong Microsoft Defender expertise, hands-on migration experience, and the ability to work within a complex, highly secure enterprise infrastructure.

Key Responsibilities

  • Lead migration from McAfee/Symantec to Microsoft Defender for Endpoint (MDE).
  • Onboard Windows and Linux servers into Microsoft Defender.
  • Validate and implement antivirus exclusion policies.
  • Configure and deploy Microsoft Defender security policies.
  • Create Azure AD device groups for policy deployment.
  • Develop migration plans for complex enterprise environments.
  • Perform network connectivity testing during migration.
  • Build and distribute Defender installation packages.
  • Work closely with infrastructure and image management teams.
  • Remove legacy antivirus solutions from servers.
  • Deploy Defender using GPO, SCCM, or Microsoft Intune.
  • Configure endpoint security policies, exclusions, dashboards, and reporting.
  • Troubleshoot security incidents and support Defender operations.
  • Produce technical documentation, deployment guides, and operational procedures.
Required Skills & Experience
  • Strong hands-on experience with Microsoft Defender for Endpoint (MDE).
  • Experience migrating enterprise environments from McAfee or Symantec to Microsoft Defender.
  • Experience managing antivirus policies and exclusions.
  • Knowledge of:
  • Microsoft Defender for Endpoint
  • Microsoft Defender for Servers
  • Microsoft Defender for Office 365
  • Microsoft Defender for Identity
  • Microsoft Cloud App Security
  • Good understanding of:
  • Endpoint Detection & Response (EDR)
  • Threat & Vulnerability Management (TVM)
  • Attack Surface Reduction (ASR)
  • Automated Investigation & Remediation (AIR)
  • Experience with Windows Server and Linux (RHEL).
  • Experience deploying Defender through GPO, SCCM, or Intune.
  • Strong understanding of threat hunting, endpoint security, and security best practices.
  • Excellent troubleshooting and documentation skills.
Essential Requirements
  • Active SC Clearance (must be transferable).
  • Minimum 3 months validity remaining on SC Clearance.
  • Experience working within secure or highly regulated environments.
  • Ability to start quickly.
Priyanka Sharma

Senior Delivery Consultant

Office: 02033759240

Email: psharma@vallumassociates.com
Back to blog

Other Jobs To Apply

No other job posts for this day.

Common Interview Questions And Answers

1. HOW DO YOU PLAN YOUR DAY?

This is what this question poses: When do you focus and start working seriously? What are the hours you work optimally? Are you a night owl? A morning bird? Remote teams can be made up of people working on different shifts and around the world, so you won't necessarily be stuck in the 9-5 schedule if it's not for you...

2. HOW DO YOU USE THE DIFFERENT COMMUNICATION TOOLS IN DIFFERENT SITUATIONS?

When you're working on a remote team, there's no way to chat in the hallway between meetings or catch up on the latest project during an office carpool. Therefore, virtual communication will be absolutely essential to get your work done...

3. WHAT IS "WORKING REMOTE" REALLY FOR YOU?

Many people want to work remotely because of the flexibility it allows. You can work anywhere and at any time of the day...

4. WHAT DO YOU NEED IN YOUR PHYSICAL WORKSPACE TO SUCCEED IN YOUR WORK?

With this question, companies are looking to see what equipment they may need to provide you with and to verify how aware you are of what remote working could mean for you physically and logistically...

5. HOW DO YOU PROCESS INFORMATION?

Several years ago, I was working in a team to plan a big event. My supervisor made us all work as a team before the big day. One of our activities has been to find out how each of us processes information...

6. HOW DO YOU MANAGE THE CALENDAR AND THE PROGRAM? WHICH APPLICATIONS / SYSTEM DO YOU USE?

Or you may receive even more specific questions, such as: What's on your calendar? Do you plan blocks of time to do certain types of work? Do you have an open calendar that everyone can see?...

7. HOW DO YOU ORGANIZE FILES, LINKS, AND TABS ON YOUR COMPUTER?

Just like your schedule, how you track files and other information is very important. After all, everything is digital!...

8. HOW TO PRIORITIZE WORK?

The day I watched Marie Forleo's film separating the important from the urgent, my life changed. Not all remote jobs start fast, but most of them are...

9. HOW DO YOU PREPARE FOR A MEETING AND PREPARE A MEETING? WHAT DO YOU SEE HAPPENING DURING THE MEETING?

Just as communication is essential when working remotely, so is organization. Because you won't have those opportunities in the elevator or a casual conversation in the lunchroom, you should take advantage of the little time you have in a video or phone conference...

10. HOW DO YOU USE TECHNOLOGY ON A DAILY BASIS, IN YOUR WORK AND FOR YOUR PLEASURE?

This is a great question because it shows your comfort level with technology, which is very important for a remote worker because you will be working with technology over time...