Salary: £56,000 - 85,000 per year Requirements: We are looking for an experienced infrastructure professional with strong technical leadership and subject matter expertise across systems administration and enterprise infrastructure. We require hands-on experience in several of the following areas: VMware vSphere 8.0 or later, Windows Server 2019/2022 administration, Microsoft Exchange, Microsoft 365, Active Directory, Federated Trusts, Citrix XenApp, Citrix XenDesktop, NetScaler, Fibre Channel storage technologies, Dell NetApp solutions, AWS and/or Microsoft Azure, SQL Server administration, SQL Server 2019, PKI, Certificate Authority administration, Linux system administration, Ansible automation, and enterprise networking fundamentals including TCP/IP, DNS, DHCP, and MPLS. We are seeking someone who can troubleshoot and resolve advanced technical issues across multiple technology domains. We need someone familiar with compliance requirements and operational standards, including ISO20000 and ISO27001. We require the ability to work in a highly secure and technically complex environment. Due to the nature of the work, applicants must be sole UK nationals. Previous experience supporting highly available enterprise services and participating in on-call and out-of-hours activities is required. You should have experience collaborating with internal teams and third-party vendors. We are looking for someone who can provide guidance and mentoring to other technical team members where required. Responsibilities: We provide technical leadership and subject matter expertise across infrastructure and systems administration functions. We design, implement, administer, and support enterprise systems and platforms. We lead and contribute to complex infrastructure projects and service improvements. We troubleshoot and resolve advanced technical issues across multiple technology domains. We support highly available services, including participation in an on-call rota and out-of-hours change activities. We collaborate with internal teams and third-party vendors to maintain and enhance critical applications and infrastructure. We contribute to service planning, operational excellence, and continuous improvement initiatives. We ensure compliance with established operational procedures, security requirements, and industry standards, including ISO20000 and ISO27001. We provide guidance and mentoring to other technical team members where required. Technologies: AWS Active Directory Ansible Azure Citrix Support Linux MPLS Microsoft 365 SQL Security TCP/IP VMware Windows Office 365 Cloud DevOps Web More: We are offering a permanent Principal Infrastructure Engineer opportunity in Cheltenham with flexible work patterns available and a salary of up to 80,000. This is an exciting opportunity to join a skilled infrastructure team supporting critical enterprise systems in a highly secure, mission-focused environment. We offer flexible hybrid working, an optional compressed schedule with every other Friday off, private healthcare, performance-related bonus opportunities, ongoing training and career development, and the chance to work on challenging and impactful projects. last updated 24 week of 2026