Information Security

IT Infrastructure Security Engineer

Tria Recruitment

London · Greater London · United Kingdom

Overview

In this role you will modernise our infrastructure, strengthen security, and deliver technical change across a Microsoft environment. You work within a small, collaborative tech team with autonomy to shape best practices and make a measurable impact. The role blends infrastructure and security work, driving projects that boost resilience, performance, and cyber security. This is a hands-on, project-focused opportunity with exposure to modern Microsoft technologies and ongoing learning.

Pay / Benefits
  • fantastic benefits package
  • hybrid work model (minimum one day per month in the office)
  • opportunity for ongoing learning and professional certifications
  • meaningful infrastructure and security projects
  • exposure to modern Microsoft technologies
Responsibilities
  • Lead infrastructure implementation and improvement projects
  • Manage and enhance Microsoft Azure and on-premise infrastructure
  • Administer Active Directory, Group Policy, and virtualised environments
  • Drive server lifecycle management and platform optimisation
  • Deliver security improvements including AD reviews and Group Policy hardening
  • Support Cyber Essentials compliance and embed security best practice
  • Identify opportunities to optimise Azure consumption and reduce cloud costs
  • Produce high-quality technical documentation and follow ITIL-aligned processes
  • Support occasional out-of-hours releases and participate in a future on-call rota
Key requirements
  • Microsoft infrastructure technologies
  • Microsoft Azure
  • Active Directory and Group Policy
  • VMware/vSphere
  • Server lifecycle management
  • Infrastructure implementation and project delivery
  • ITIL environments
  • Cyber Essentials and infrastructure security improvements
  • Takes ownership and can deliver with minimal supervision
  • Strong communication with technical and non-technical stakeholders
  • Collaborative spirit while delivering independently
  • Microsoft infrastructure technologies
  • Microsoft Azure
  • Active Directory and Group Policy

Reference: WJ-747_31200987 · Posted 01 Nov 2026

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