Senior Security Engineer (Defender, PurView, Sentinel)

Invitise; City Of London; Hybrid; GBP 100,000 - 125,000; Part time

Job summary

A leading technology company is seeking a Senior Security Engineer in London for an initial 3 to 6 month contract, paying up to £500 per day. The role offers hybrid working, requiring attendance at the office 3 days per week. Responsibilities include hands-on remediation across Azure environments and improving Defender for Cloud findings. The ideal candidate will possess extensive experience with Azure security tools and relevant certifications.

Qualifications

• Experience in vulnerability remediation and Secure Score improvement.
• Hands-on remediation in Azure and endpoint environments.
• Certifications for cloud security are a must.

Responsibilities

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

Skills

Defender for Cloud

Defender for Endpoint

Vulnerability remediation

PowerShell

Microsoft Graph

Education

AZ-500, SC-100 (or working towards)

One of MS-500, SC-400 or SC-900

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.

Desirable: CCSP.

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