Cross Technology Managed Services Engineer (L3)

Role Overview The Cross Technology Managed Services Engineer (L3) is a senior technical specialist responsible for delivering operational excellence across multiple technology domains within managed services environments. The role requires a strong foundation in core infrastructure technologies, including operating systems, Active Directory, identity and messaging services, with primary expertise in public cloud platforms, cloud networking, and cloud security. This position provides advanced technical support, complex incident resolution, proactive service optimisation, and technical leadership across hybrid and multi-cloud customer environments. The engineer acts as an escalation point for lower-tier engineers and contributes to the design, automation, and continuous improvement of managed services operations. Key Responsibilities Public Cloud Operations Manage, maintain, and optimise Azure, AWS and/or GCP environments. Support cloud-native networking, identity, security, and governance services. Implement and maintain cloud security controls, policies, and best practices. Monitor cloud platform performance, availability, and cost optimisation initiatives. Support cloud migration, modernisation, and transformation projects. Cloud Networking & Security Administer and troubleshoot: Virtual Networks (VNETs) AWS VPCs Routing and segmentation VPN connectivity ExpressRoute / Direct Connect Load balancing DNS services Firewalls and security appliances Implement and manage: Zero Trust principles Network Security Groups Web Application Firewalls Cloud security services Identity-based access controls Service Operations Act as L3 escalation point for critical incidents and complex technical issues. Lead root cause analysis and problem management activities. Deliver proactive maintenance and service improvement initiatives. Develop automation and standardisation opportunities. Produce and maintain technical documentation and operational procedures. Customer Engagement Provide technical guidance to clients and internal teams. Participate in service reviews and technical governance discussions. Support project teams during implementations and transitions into support. Contribute technical expertise during solution planning and design discussions. Required Technical Skills Public Cloud Microsoft Azure (preferred) SC700 Amazon Web Services (advantageous) Cloud Networking VNET / VPC Design Routing and Switching VPN Technologies SD-WAN ExpressRoute / Direct Connect DNS and Load Balancing Cloud Firewalls Cloud Security Microsoft Defender Suite Microsoft Sentinel Security Center / Defender for Cloud IAM and RBAC Conditional Access Zero Trust Architecture Security Monitoring and Compliance Infrastructure Windows Server Linux Administration PowerShell Infrastructure Automation Experience Requirements 5+ years experience in managed services or enterprise infrastructure environments. Demonstrated experience supporting public cloud platforms in production environments. Strong experience in cloud networking and security technologies. Experience with Microsoft identity and messaging platforms. Proven ability to lead technical troubleshooting and major incident resolution. Preferred Certifications Microsoft AZ-104 Microsoft Azure Administrator AZ-305 Azure Solutions Architect Expert AZ-700 Azure Network Engineer Associate AZ-500 Azure Security Engineer Associate SC-100 Cybersecurity Architect Expert (advantageous)