Security Engineer -M365 E5/Defender XDR/Sentinel/Azure AD

Security Engineer - MS Defender, MS Sentinel, Azure ID/Entra ID, M365 E5

Location: Milton Keynes (Hybrid - 2 Days Onsite)

Contract Type: Outside IR35

Day Rate: Up to £700 per day

Duration: Initial 6 Months (with potential extension)

Role Overview

We are seeking an experienced Security Engineer to support and enhance our Microsoft security capabilities across infrastructure, cloud, identity, and business applications. This is a hands-on contract opportunity for a security professional with strong expertise across the Microsoft security stack, including Defender XDR, Microsoft Sentinel, Entra ID, and Dynamics 365.

The successful candidate will play a key role in strengthening security operations, improving threat detection, enhancing monitoring capabilities, and securing critical business platforms.

Essential Skills & Experience

Proven experience working as a Security Engineer, Cyber Security Engineer, or Security Operations Engineer.

Strong hands-on experience with:

Microsoft Defender XDR

Microsoft Sentinel (SIEM/SOAR)

Microsoft Entra ID (Azure Active Directory)

Identity and Access Management (IAM)

Microsoft 365 E5 Security

Security monitoring and detection engineering

Incident response and threat investigation

Dynamics 365 (D365) security administration and monitoring

Experience designing and implementing enterprise security monitoring and threat detection solutions.

Strong understanding of Microsoft cloud security architecture and best practices.

Experience working within Azure-based environments.

Ability to operate independently and deliver security outcomes in a fast-paced environment. Desirable Skills

Microsoft certifications such as:

SC-200 Microsoft Security Operations Analyst

SC-300 Identity and Access Administrator

AZ-500 Azure Security Engineer Associate

SC-100 Cybersecurity Architect

PowerShell scripting and automation experience.

Previous experience within regulated or enterprise-scale environments.If you are a hands-on Security Engineer with deep expertise across Defender XDR, Sentinel, Entra ID, IAM, and Microsoft security technologies, we'd like to hear from you