Senior Infrastructure Engineer: Hybrid Azure & Security Lead

Red King Resourcing; West End; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

Red King Resourcing is representing a large client seeking a Senior Infrastructure Engineer to lead a hybrid Microsoft infrastructure across multiple countries. The role blends project delivery with day-to-day operations, focusing on Azure, M365, identity, and endpoint management in a small agile team.

You will own design-to-implementation work, provide technical direction to third parties, and ensure security, resilience and clear documentation. On-site three days a week, inside IR35.

Qualifications

• Extensive hands-on experience managing enterprise hybrid Microsoft infrastructure.
• Strong Azure networking, backup, Site Recovery and security knowledge.
• Excellent Entra ID expertise: SSO, CA, identity security.
• Experience with Microsoft 365, Intune, Autopilot and Windows 11.
• Solid Windows Server, AD, Group Policy, PKI knowledge.
• Proficient in PowerShell scripting and automation.
• Security-focused with vulnerability management and hardening experience.

Responsibilities

• Design, build and manage Azure infrastructure, including networking, compute, storage, backup and monitoring.
• Administer Microsoft Entra ID, including SSO, Conditional Access and governance.
• Manage Microsoft 365 services such as Exchange Online, Teams and SharePoint.
• Own endpoint management via Intune and Autopilot, including Windows 11 deployment.
• Deliver and support office and WAN networking (Cisco Meraki, SD-WAN, firewalls).
• Maintain Windows Server, Active Directory, DNS/DHCP, and PKI services.
• Drive security improvements, vulnerability remediation and audit compliance.
• Develop PowerShell automation to improve operations and reporting.
• Maintain accurate technical documentation and runbooks.

Skills

Azure expertise

Entra ID

Intune Autopilot

PowerShell

Azure DevOps

Networking

Git

Security mindset

Tools

Cisco Meraki

ExpressRoute

SD-WAN

Job description

Red King Resourcing is representing a large client seeking a Senior Infrastructure Engineer to lead a hybrid Microsoft infrastructure across multiple countries. The role blends project delivery with day-to-day operations, focusing on Azure, M365, identity, and endpoint management in a small agile team.

You will own design-to-implementation work, provide technical direction to third parties, and ensure security, resilience and clear documentation. On-site three days a week, inside IR35.