Senior Microsoft Security Engineer: Sentinel & Defender

Experis; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

Experis partners with a specialist Microsoft Security organisation to appoint two Senior SecOps Engineers. The role is UK-based with predominantly remote work and occasional presence in London, offering a permanent position in a growing Microsoft Cyber Engineering team.

You will design, implement and optimise Microsoft Sentinel and Defender solutions, engineering SIEM capabilities and developing detection rules for large enterprise environments. Strong hands-on security engineering is essential.

Qualifications

• Microsoft Sentinel / Azure Sentinel experience in enterprise environments.
• Microsoft Defender / Defender XDR engineering and deployments.
• Strong KQL / Kusto query language capabilities.
• Hands-on Security/SOC engineering, not just monitoring.

Responsibilities

• Design, implement and support Microsoft Sentinel and Defender solutions.
• Engineer and optimise SIEM capabilities across enterprise environments.
• Develop and tune detection rules and analytics with KQL.
• Design SOC automation, playbooks and scripting.
• Improve security event detection and response capabilities.
• Conduct tenant health checks, security audits and architecture reviews.
• Support incident triage and resolution for complex engagements.
• Document security engineering standards and processes.

Skills

Microsoft Sentinel

Defender XDR

KQL / Kusto

Security Engineering

SOC Engineering

Automation / SOAR / Playbooks

Cloud security assessments

Customer-facing delivery

PowerShell / Python scripting

Job description

Experis partners with a specialist Microsoft Security organisation to appoint two Senior SecOps Engineers. The role is UK-based with predominantly remote work and occasional presence in London, offering a permanent position in a growing Microsoft Cyber Engineering team.

You will design, implement and optimise Microsoft Sentinel and Defender solutions, engineering SIEM capabilities and developing detection rules for large enterprise environments. Strong hands-on security engineering is essential.