Purpose

The IT Systems Engineer is responsible for the day-to-day operation, administration and technical support of Infleqtion UK's corporate IT environment.

The role provides technical escalation, supports the secure and reliable delivery of corporate IT services, and plays a key part in transitioning operational services from outsourced to internally managed delivery.

The role requires broad hands-on experience across cloud, on-premises systems, endpoints, identity, networking and core infrastructure services, with growing responsibility across infrastructure, security operations and service resilience as the UK IT function develops.

Requirements

• Administer Microsoft 365, Entra ID, Active Directory, Intune and associated corporate IT services
• Manage identity, access and privileged-access administration
• Manage endpoint configuration, patching, application deployment and security controls across supported Windows, macOS and Linux environments
• Operate and maintain backup, monitoring and recovery platforms
• Support the resilience, availability and performance of corporate IT systems
• Act as the technical escalation point for complex incidents and service requests
• Support corporate networking, wireless, firewall and connectivity services in collaboration with Platform Engineering where responsibilities overlap
• Support the operation and ongoing development of UK infrastructure services in collaboration with Platform Engineering
• Support virtualised and on-premises infrastructure where it forms part of the corporate IT environment
• Support vulnerability remediation, endpoint security and technical cyber security controls
• Take an active role in security monitoring, vulnerability management and incident response
• Support the development of internal security operations capability as the UK IT function matures
• Contribute to the design and implementation of secure and resilient infrastructure services
• Maintain technical documentation, configuration records and operational procedures
• Deliver technical elements of onboarding, offboarding and user lifecycle management
• Support IT projects, infrastructure changes and technology deployments
• Identify opportunities to simplify, standardise and improve IT services in line with IT strategy and priorities
• Support the transition and ongoing operation of services and tooling currently delivered by managed service providers
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Skills And Experience

• 5+ years of relevant experience in systems administration, infrastructure engineering, or a similar technical role
• Strong experience administering Microsoft 365, Entra ID and Active Directory environments
• Experience with Intune or comparable endpoint-management platforms
• Good knowledge of Windows, macOS and Linux corporate environments
• Strong understanding of identity, access control, RBAC and least-privilege principles
• Strong understanding of networking concepts including LAN, WAN, VLANs, VPNs, DNS, DHCP, wireless and firewalls
• Experience with virtualisation technologies such as Hyper-V or VMware
• Experience with backup, recovery, monitoring and business-continuity technologies
• Experience with endpoint security, vulnerability remediation and patch-management tooling
• Good understanding of cloud platforms, particularly Microsoft Azure
• Experience with security monitoring, vulnerability management or incident response
• Familiarity with SIEM, EDR/XDR or SOC tooling
• Strong troubleshooting, documentation and communication skills