IT Systems Engineer

Infleqtion UK; Kidlington; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Bonus Program

Incentive Stock Option Plan

Private Healthcare Insurance

Pension contribution 10%

Cycle to work scheme

Tax efficient technology schemes

Life assurance (4 x salary)

Job summary

Infleqtion UK is seeking an IT Systems Engineer to run day‑to‑day corporate IT, manage cloud and on‑prem infrastructure, and act as escalation for complex incidents. The role covers identity, security controls, endpoints, backups and networking across Windows, macOS and Linux environments.

Based at Kidlington with up to 2 days remote, you will collaborate with Platform Engineering to improve resilience, monitoring and security posture while delivering IT projects and documenting procedures.

Qualifications

• 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.

Responsibilities

• 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

Skills

Microsoft 365 admin

Entra ID admin

Active Directory

Intune

Endpoint security

Networking

Azure

SIEM

Troubleshooting

Documentation

Education

Relevant degree

Technical qualification

Apprenticeship

Certifications beneficial

Tools

Microsoft 365

Entra ID

Active Directory

Intune

Azure

Job description

About The Company

Infleqtion is a global quantum technology company solving the world's most challenging problems. The company harnesses quantum mechanics to build and integrate quantum computers, sensors, and networks. From fundamental physics to leading edge commercial products, Infleqtion enables "quantum everywhere" through our ecosystem of devices and platforms. Our mission is to commercialise atom-based quantum products that provide orders of magnitude improvements in performance and computing applications.

About The Company

Infleqtion is a global quantum technology company solving the world's most challenging problems. The company harnesses quantum mechanics to build and integrate quantum computers, sensors, and networks. From fundamental physics to leading edge commercial products, Infleqtion enables "quantum everywhere" through our ecosystem of devices and platforms. Our mission is to commercialise atom-based quantum products that provide orders of magnitude improvements in performance and computing applications.

Location

Infleqtion has offices in the USA, United Kingdom and Australia. This is a full-time position based at our Kidlington, Oxford office. Work from home permitted up to 2 days per week based on business needs and manager approval.

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

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

Qualifications

• Relevant degree, technical qualification, apprenticeship or equivalent professional experience
• Relevant Microsoft, networking, cloud or cyber security certifications are advantageous but not essential

Travel

Up to 10% travel, including international travel, may be required

Working Conditions And Physical Requirements

Work will normally be performed in an office and laboratory environment. Able to efficiently use automated office equipment such as laptops, copiers, and printers; able to effectively engage in communications (via phone, computer, or in-person). Will involve sitting, standing, walking, lifting, and carrying up to 10 kg.

Equal Opportunity

Regardless of your interest in the quantum industry, you can take pride in the fact that Infleqtion is building an ecosystem of quantum technologies and commercial products, driving the industry towards the future. Studies reveal that while men apply for jobs when they meet an average of 60% of the requirements, women and other groups tend to apply only when they meet all the criteria. Our goal is to find exceptional individuals who can enrich our team culture, actively contribute, and have a genuine passion for their work. Here you have freedom to embrace your whole self: who you love, your gender identity and expression, skin colour, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.

Notice to Recruitment Agencies

Infleqtion does not accept unsolicited CV's from agencies. Infleqtion is not responsible for any fees related to unsolicited CV's.

Benefits

In addition to your base compensation, we offer a generous Total Rewards program which includes:

• Competitive salary
• Bonus Program
• Incentive Stock Option Plan
• Unlimited PTO subject to fair usage
• Generous company 10% pension contribution regardless of employee contribution
• Cycle to work scheme
• Tax efficient technology schemes
• BUPA Private Healthcare Insurance once probationary period is successfully completed
• Life assurance (4 x salary)