Senior Infrastructure Engineer

Location: Hybrid - Milton Keynes / London (x3 days per week onsite)

About the Role

Our client is looking for an experienced Senior Infrastructure Engineer to support and improve secure enterprise infrastructure across cloud and on-premises environments.

The role has a strong focus on Microsoft Azure, Windows Server, Linux, networking and endpoint security. You will work across hybrid infrastructure, including Azure Arc onboarding, Azure Monitor Agent deployment, XDR/EDR security tooling, monitoring and platform automation.

This is a hands-on engineering position requiring strong infrastructure knowledge and the ability to troubleshoot complex issues across Windows, Linux, cloud and network environments.

Responsibilities

• Deploy, configure and support Azure and hybrid infrastructure services.
• Onboard and manage Windows and Linux servers through Azure Arc.
• Deploy and troubleshoot Azure Monitor Agent (AMA) across enterprise infrastructure.
• Configure Azure monitoring, Log Analytics, data collection and alerting.
• Deploy, maintain and troubleshoot XDR/EDR security agents across server environments.
• Administer Windows and Linux infrastructure, including patching, upgrades and security hardening.
• Support Active Directory, DNS, DHCP, Group Policy and certificate services.
• Troubleshoot networking and connectivity across cloud and on-premises environments.
• Support Azure networking, including VNets, NSGs, firewalls, VPNs and private connectivity.
• Automate infrastructure and deployment activities using PowerShell, Bash and Infrastructure as Code.
• Support vulnerability remediation, security compliance and infrastructure monitoring.
• Maintain technical documentation and operational standards.

Essential Experience & Technical Skills

• 5+ years' experience in Infrastructure, Platform, Cloud or Systems Engineering.
• Experience managing Azure Arc-enabled Windows and Linux servers.
• Experience deploying and supporting Azure Monitor Agent (AMA).
• Hands-on experience deploying and managing XDR/EDR agents.
• Strong Windows Server and Linux administration skills.
• Experience with Active Directory, DNS, DHCP and Group Policy.
• Strong networking knowledge across TCP/IP, DNS, routing, firewalls, VPNs and proxies.
• Experience with Azure Monitor and Log Analytics.
• Strong PowerShell skills with experience using Bash.
• Strong infrastructure troubleshooting and security-hardening experience.
• Microsoft Defender XDR, CrowdStrike, SentinelOne, Cortex XDR or similar.
• Infrastructure as Code using Terraform, Bicep or ARM templates.
• Microsoft Entra ID and Defender for Cloud.
• Azure networking, including ExpressRoute and Private Endpoints.
• DevOps and CI/CD environments.
• ITIL or structured service-management environments.
• Experience automating large-scale infrastructure or security deployments.

Why Join?

• Work across complex Azure and hybrid infrastructure environments.
• Broad exposure to cloud, Windows, Linux, networking and security technologies.
• Deliver modern monitoring and endpoint security solutions.
• Opportunity to improve and automate infrastructure at scale.
• 6-month contract within a technically complex, security-focused environment.

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