Senior Infrastructure Engineer

Role: Senior Infrastructure Engineer

Contract Length: 6 months

Location: Hybrid Milton Keynes/London

Pay Rate to Candidate: £629.92 Inside IR35

Security Clearance: DV is essential

Azure Infrastructure and Hybrid Cloud

• Deploy, configure and support Microsoft Azure infrastructure services.
• Onboard Windows and Linux Servers to Azure Arc.
• Configure and manage Azure Arc-enabled Servers and their extensions.
• Administer Azure resources, subscriptions, resource groups and role-based access control (RBAC).
• Contribute to hybrid-cloud integration and infrastructure modernisation initiatives.

Monitoring and Observability

• Install, configure and troubleshoot Azure Monitor Agent (AMA) on Windows and Linux Servers.
• Configure Azure Monitor, Log Analytics workspaces, Data Collection Rules (DCRs), dashboards and alerts.
• Monitor infrastructure performance, availability, capacity and security events.
• Deliver operational monitoring and reporting across enterprise environments.

Endpoint Security and XDR Deployment

• Deploy, configure, upgrade and maintain XDR/EDR agents across Windows and Linux server environments.
• Execute large-scale security-agent rollouts using automated deployment methods.
• Resolve agent installation, connectivity, onboarding and performance issues.
• Keep endpoint security agents compliant and operational across the server estate.
• Support security operations teams with endpoint protection and monitoring requirements.

Windows Server Administration

• Install, configure, administer and maintain Windows Server environments.
• Manage Active Directory, DNS, DHCP, Group Policy and certificate services.
• Perform server patching, upgrades, security hardening and life cycle management.
• Troubleshoot operating-system, application and infrastructure issues.

Linux Server Administration

• Install, configure, administer and maintain Linux server environments.
• Manage system services, package repositories, storage, user access and SSH configurations.
• Perform Linux patching, upgrades and security hardening.
• Troubleshoot operating-system, application and networking issues.

Networking

• Configure and troubleshoot TCP/IP Networking across on-premises and Azure environments.
• Support DNS, routing, Firewalls, load balancers, VPNs and Proxy services.
• Resolve connectivity issues affecting Azure Arc, Azure Monitor Agent and XDR communications.
• Support the following Azure networking technologies:

Virtual Networks (VNets)

Network Security Groups (NSGs)

Azure Firewall

VPN Gateway

ExpressRoute

Private Endpoints

Automation and Platform Engineering

• Automate operational tasks with PowerShell and Bash.
• Support Infrastructure as Code (IaC) initiatives using Terraform, Bicep or ARM templates.
• Develop deployment and validation scripts for Azure Arc, Azure Monitor Agent and XDR solutions.
• Maintain technical documentation, standards and operational procedures.

Security and Compliance

• Apply security best practices and hardening standards across Windows and Linux platforms.
• Support vulnerability remediation, compliance initiatives and security audits.
• Investigate infrastructure and endpoint security alerts.
• Collaborate with Cyber Security, Infrastructure and Operations teams to maintain secure, reliable platforms.

Technical Skills

• Strong Microsoft Azure administration and support experience.
• Hands-on experience onboarding and managing Azure Arc-enabled Servers.
• Experience deploying and supporting Azure Monitor Agent (AMA).
• Experience deploying and supporting XDR/EDR agents.
• Strong Windows and Linux server administration skills.
• Knowledge of Active Directory, DNS, DHCP and Group Policy.
• Strong networking fundamentals, including TCP/IP, DNS, routing, VPNs, Firewalls and proxies.
• PowerShell and Bash Scripting experience.
• Experience with Azure Monitor, Log Analytics and infrastructure monitoring.

Preferred Skills

• Experience with Microsoft Defender XDR, CrowdStrike, SentinelOne, Cortex XDR or a comparable platform.
• Experience with Microsoft Intune, SCCM, Ansible or similar deployment tools.
• Experience with Terraform, Bicep or ARM templates.
• Knowledge of Microsoft Entra ID and Defender for Cloud.
• Familiarity with DevOps practices and CI/CD pipelines.
• Understanding of ITIL service-management processes.

Qualifications

• Bachelor's degree in Information Technology, Computer Science or Cyber Security, or equivalent experience.
• At least five years' experience in platform, infrastructure or cloud engineering, or systems administration.
• Experience supporting enterprise Windows and Linux server environments.

Key Competencies

• Strong troubleshooting and analytical skills.
• Excellent communication and stakeholder-management skills.
• Ability to work independently and in cross-functional teams.
• Strong focus on security, reliability and operational excellence.
• Proactive approach to automation, monitoring and continuous improvement.