Be Part of a Game-Changing IT Transformation. Sopra Steria is building a brand-new, cutting-edge Managed Service, replacing a complex legacy Enterprise infrastructure with a fully automated, scalable, and highly secure environment. This greenfield project is a rare opportunity to work with the latest Windows, VMware, Ansible, Terraform, and scripting technologies, alongside niche infrastructure solutions. We are looking for a System Administrator to play a key role in designing, managing, and securing a next-generation IT platform within a Hyperconverged Infrastructure (HCI) environment. You will work on Active Directory, Delinea (formerly Quest), Public Key Infrastructure (PKI), and Thales Hardware Security Modules (HSMs)-driving innovation and efficiency in an enterprise-scale deployment. What You'll Be Doing: Working with cutting-edge technology - a next-gen, highly automated IT platform. Shape a solution from the ground up, free from legacy constraints. Directly influence security, automation, and infrastructure design. Managing & securing Active Directory - User & group management, Group Policy, and domain controllers. Administering Delinea solutions - Including AD management tools, migration, and recovery solutions. Maintaining Thales HSMs - Ensuring the security and integrity of cryptographic keys & sensitive data. Enhancing automation - Leveraging scripting to improve efficiency and reduce manual workloads. Optimising performance - System monitoring, tuning, and troubleshooting for high availability. Implementing security updates - Planning and executing upgrades & patches in line with best practices. What You'll Bring: Expertise in Active Directory Administration. Hands-on experience with Delinea (formerly Quest) solutions. Strong PKI Management skills, including Thales HSMs. Understanding of Tiered Active Directory Models. It would be great if you had: Scripting & Automation - PowerShell, Ansible, or Terraform. Deep knowledge of Security Best Practices. Experience with ITIL Framework. Database troubleshooting & problem-solving skills. If you are interested in this role but not sure if your skills and experience are exactly what we're looking for, please do apply, we'd love to hear from you Employment Type: Full-time Permanent Location: Farnborough Security Clearance Level: eligible for SC and DV clearance Internal Recruiter: Lee Salary: up to £60,000 Benefits: £5,400 car allowance, 25 days annual leave with the option to buy additional days, private medical, life assurance, pension, and generous flexible benefits fund. Loved reading about this job and want to know more about us? Sopra Steria's Aerospace, Defence and Security business designs, develops and deploys digital solutions to Central Government clients. The work we do makes a real difference to the client's goal of National Security, and we operate in a unique and privileged environment. We are given time for professional development activities, and we coach and mentor our colleagues, sharing knowledge and learning from each other. We foster a culture in which employees feel valued and supported and have pride in their work for the customer, delivering outstanding rates of customer satisfaction in the UK's most complex safety- and security-critical markets. We embrace difference as a source of creativity, innovation and competitive advantage and are striving to become a more diverse organisation. We welcome applications from people with a diverse variety of backgrounds and identities. We are committed to equality of opportunity for all and do not discriminate on the basis of race, religion, colour, gender, age, disability, sexual orientation or marital status. We have partnered with Vercida, the UK's largest diversity and inclusion focused careers site, where all our vacancies are available in an accessible format. If you require any adjustments to the recruitment process, to enable you to perform to the best of your ability, please let us know when completing your application. We participate in the Disability Confident scheme and are committed to offering an interview to any candidate with a disability, who meets the minimum criteria for the role. If you believe this could apply to you, please let us know when completing your application.