Senior Microsoft Security Architect: Azure & Sentinel

Leap29; Basildon; On-site; GBP 90,000 - 110,000; Full time

Job summary

Leap29 is recruiting a Senior Microsoft Security Engineer to join a security engineering function across enterprise Azure environments. You will design, implement and optimise Microsoft security technologies including Microsoft Sentinel, Defender XDR and Microsoft Purview, delivering scalable security solutions and improving detection coverage.

The role requires hands-on experience with Sentinel analytics using KQL, Defender XDR capabilities, Azure security controls and IAM with Entra ID.

Qualifications

• Extensive hands-on experience in Microsoft security engineering across Azure environments.
• Proficient with Sentinel, Defender XDR and Purview configurations and risk mitigation.
• Experience implementing IAM and Entra ID, CA policies and identity security controls.

Responsibilities

• Design, implement and optimise Microsoft Sentinel environments and onboarding.
• Develop and tune Sentinel analytics rules using KQL for better detection.
• Support security monitoring, threat detection and incident response across enterprise systems.
• Configure Defender XDR capabilities including endpoints, identity, cloud and email security.
• Implement and manage Purview solutions including DLP and sensitivity labels.
• Conduct security assessments and propose Azure security improvements.
• Collaborate with stakeholders to produce security documentation and plans.
• Develop security automation using Logic Apps, Functions, Terraform and Bicep.

Skills

Security engineering

KQL

Sentinel analytics

Automation

IAM security

Cloud security

Security architecture

SIEM optimisation

Threat detection

Security documentation

Education

Bachelor’s degree in a relevant field

Tools

Microsoft Sentinel

Defender XDR

Microsoft Purview

Azure

Terraform

Bicep

PowerShell

Logic Apps

Azure Functions

Azure DevOps

Job description

Leap29 is recruiting a Senior Microsoft Security Engineer to join a security engineering function across enterprise Azure environments. You will design, implement and optimise Microsoft security technologies including Microsoft Sentinel, Defender XDR and Microsoft Purview, delivering scalable security solutions and improving detection coverage.

The role requires hands-on experience with Sentinel analytics using KQL, Defender XDR capabilities, Azure security controls and IAM with Entra ID.