Jobs / The Keystone Group UK
Infrastructure Engineer
The Keystone Group UK · Cookstown, NIR, United Kingdom
Cookstown, NIR, United KingdomExp: 5+ yrsHybrid
Remuneration
Not specified
Location
Cookstown, NIR, United Kingdom
Visa sponsorship
Not specified
Job summary
The Infrastructure Engineer role is responsible for managing, securing, and modernizing both on-premise and cloud infrastructure, with a focus on Microsoft Entra ID administration. Key responsibilities include maintaining server estates, managing Active Directory, supporting migrations to Azure, and contributing to security initiatives such as Cyber Essentials Plus.
Benefits
32 days annual leave, increasing with servicePensionLife AssuranceHealthcare Cashback PlanEnhanced Family Friendly policiesCycle to Work SchemeEmployee Discount SchemeEmployee Recognition awardsEmployee Assistance Programme
Qualifications
- Educated to Degree Level
- Minimum 5 years of experience as an Infrastructure Engineer or 10 years in IT Infrastructure
- Experience administering Windows Server and Active Directory
- Hands-on experience with Microsoft Entra ID
- Experience with virtualisation platforms (VMware/Hyper-V)
- Understanding of core networking (DNS, DHCP, VLANs)
- Exposure to Azure or public cloud platforms
- Knowledge of endpoint security and patch management
- Strong troubleshooting skills
- Clear communicator with technical and non-technical stakeholders
Responsibilities
- Administer and maintain server estate (physical and virtualised)
- Support decommissioning of legacy/EOL systems
- Manage Active Directory across multiple domains
- Administer core infrastructure services: DNS, DHCP, backup, VOIP
- Support migration from VMware to Azure
- Administer Microsoft Entra ID: user lifecycle, app registrations
- Support Entra ID tenant consolidation
- Configure Conditional Access policies and MFA
- Administer Privileged Identity Management (PIM)
- Support hybrid identity sync and troubleshoot issues
- Support Microsoft 365 administration
- Assist with Azure infrastructure
- Contribute to Cyber Essentials Plus programme
- Operate endpoint and network security tooling
- Support security patching and vulnerability remediation
- Participate in incident response and investigations
- Maintain documentation for infrastructure and procedures
- Work within change management processes
- Provide 2nd/3rd-line support and mentor junior team members
- Collaborate on projects spanning infrastructure and security
Skills
AzureVMwareWindowsWindows Server
Degrees
Degree Level
Relocation
No