Senior Security Engineer (Defender, PurView)

InvitISE Ltd; Greater London; Hybrid; GBP 79,796 - 104,703; Full time

Job summary

A leading data sector client is seeking a Senior Security Engineer based in London for an initial 3 to 6 month contract. This role focuses on hands-on remediation across Azure and endpoint environments, with a hybrid working model requiring office attendance three days a week. Candidates should have experience with Defender for Cloud, vulnerability remediation, and relevant certifications. Ideal for someone who enjoys actively fixing issues rather than just advising. Competitive pay of up to £500 per day is offered.

Qualifications

• Strong experience with Defender for Cloud, Defender for Endpoint, EASM.
• Proven skills in vulnerability remediation and secure score improvement.
• Knowledge of compliance uplift for ISO 27001, SOC 2, GDPR.

Responsibilities

• Focus on hands-on remediation across Azure and endpoint environments.
• Improve Defender for Cloud findings and close vulnerabilities.
• Strengthen overall security posture for the organization.

Skills

Defender for Cloud

Vulnerability remediation

Purview (DLP)

Compliance for ISO 27001

Configuration hardening

PowerShell

Education

Certifications AZ-500 or SC-100

Tools

Microsoft Graph

Job 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.

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.

Interested?

Please apply below.

Senior Security Engineer, Azure Security Engineer, Cloud Security Engineer, Defender for Cloud, Defender for Endpoint, EASM, Purview, DLP, Conditional Access, PIM, Sentinel, Vulnerability Remediation, Cloud Hardening, London, Hybrid