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Senior Security Engineer

Job in Uxbridge, Greater London, UB8, England, UK
Listing for: Proactive.IT Appointments Ltd.
Full Time position
Listed on 2026-06-12
Job specializations:
  • IT/Tech
    Cybersecurity, Network Security, Systems Engineer, Security Manager
Salary/Wage Range or Industry Benchmark: 100000 - 125000 GBP Yearly GBP 100000.00 125000.00 YEAR
Job Description & How to Apply Below

We are seeking an experienced Senior Security Engineer to help strengthen and evolve our cybersecurity capabilities across a hybrid cloud environment. You'll play a key role in security operations, cloud and endpoint security, identity management, infrastructure protection, and security strategy.

Key Responsibilities

  • Lead the investigation and remediation of complex security incidents.
  • Enhance detection, monitoring, and automation across Microsoft security platforms.
  • Manage and optimise Conditional Access, MFA, Privileged Identity Management (PIM), and Zero Trust controls.
  • Strengthen security across Azure, Microsoft 365, Intune, SCCM, endpoints, and servers.
  • Drive vulnerability management, reporting, and remediation activities.
  • Support and improve Azure security controls, firewalls, VPNs, and network security.
  • Contribute to audits, compliance initiatives, risk assessments, and security governance.
  • Lead security work streams within major IT projects and identify opportunities for automation and continuous improvement.

Essential skills & experience

  • Proven experience in a senior security engineering role.
  • Strong expertise in Microsoft Defender, Azure Security, Microsoft 365 Security, Intune, Conditional Access, and Entra .
  • Hands-on experience with Palo Alto firewalls and VPN technologies.
  • Strong Power Shell scripting and automation skills.
  • Experience investigating security incidents and implementing technical remediation.
  • Solid understanding of Zero Trust, least privilege, and security hardening principles.
  • Experience with Microsoft Sentinel, Splunk, Tenable, Qualys, or Defender TVM.
  • Knowledge of NIST, ISO 27001, CIS, or SOC 2 frameworks.
  • Familiarity with Azure Automation, Logic Apps, PKI, and certificate management.

About You

You are a proactive and detail-oriented security professional with excellent communication skills, strong technical expertise, and the ability to work independently while building effective relationships across the business.

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Position Requirements
10+ Years work experience
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