IT Systems Engineer: Cloud, Security & Resilience

Infleqtion; Kidlington; On-site; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Competitive salary

Bonus Program

Stock options

Pension plan

Private healthcare

Cycle to work

Life assurance

Job summary

Infleqtion UK is seeking an IT Systems Engineer to manage day-to-day operation, administration and support of our corporate IT environment in Kidlington, Oxford. You will handle cloud and on‑premises systems, identity, networking and infrastructure services.

The role involves security operations, incident response, and working with Platform Engineering to improve resilience. You will maintain documentation and support onboarding/offboarding, with up to 10% travel.

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 cloud platforms, particularly Microsoft Azure, and security monitoring.

Responsibilities

• Administer Microsoft 365, Entra ID, Active Directory environments.
• Manage identity, access and privileged-access administration.
• Support the resilience, availability and performance of corporate IT systems.
• Take an active role in security monitoring, vulnerability management and incident response.

Skills

Identity and access management

Networking fundamentals

Cross‑platform admin

Documentation

Troubleshooting

Education

Relevant degree or equivalent

Tools

Microsoft 365

Entra ID

Active Directory

Intune

Hyper-V

VMware

Azure

Job description

Infleqtion UK is seeking an IT Systems Engineer to manage day-to-day operation, administration and support of our corporate IT environment in Kidlington, Oxford. You will handle cloud and on‑premises systems, identity, networking and infrastructure services.

The role involves security operations, incident response, and working with Platform Engineering to improve resilience. You will maintain documentation and support onboarding/offboarding, with up to 10% travel.