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# Senior Security Engineer (Defender, PurView)

- **Company:** InvitISE Ltd
- **Location:** Greater London, UK
- **Experience:** Expert
- **Salary:** £130,000.0
- **Contract:** Temporary contract
- **Skills:** Microsoft Azure, Cloud Computing, Windows PowerShell, Zero Trust Network Access, Software Vulnerability Management, EndPointSecurity
- **Published:** September 10, 2026
- **Apply:** https://www.collegerecruiter.com/job/2840596226-senior-security-engineer-defender-purview

## About the Role

The successful Senior Security Engineer will have experience with:

 * Defender for Cloud, Defender for Endpoint and EASM
 * Vulnerability remediation and Secure Score improvement
 * Purview (DLP, sensitivity labels, insider risk)
 * Compliance uplift for ISO 27001, SOC 2, GDPR and NIS2
 * Configuration hardening, patching and policy deployment
 * Entra ID, Conditional Access, PIM and cloud identity controls
 * PowerShell and Microsoft Graph for automation

Nice to have: Sentinel exposure, Zero Trust knowledge, regulated-sector experience.

Certifications required: AZ-500, SC-100 (or working towards), plus one of MS-500, SC-400 or SC-900.

## Description

We're looking for a Senior Security Engineer for our client in the data sector, based in London, on an initial 3 to 6 month contract paying up to £500 per day Outside IR35.

This role offers hybrid working with an expectation to attend the office 3 days per week.

You will focus on hands-on remediation across Azure and endpoint environments, improving Defender for Cloud findings, closing vulnerabilities, and strengthening security posture. The role is delivery-led and ideal for someone who enjoys fixing issues rather than only advising.


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