Lead Infrastructure Engineer - Platforms

Do you want to work in an environment where science and technology is at the forefront of safeguarding the UK? We're looking for a skilled Infrastructure Engineer with a deep understanding of Active Directory and a solid background in supporting and maintaining a broad range of Microsoft technologies. You’ll play a key role in ensuring the reliability, security, and performance of our IT infrastructure while contributing to ongoing transformation projects.

What you will be doing:

• Manage and maintain Active Directory, including Group Policy, DNS, DHCP, and OU structure.
• Support and enhance infrastructure services across Windows Server, Microsoft Exchange, Office 365, and Azure AD.
• Implement and support patching strategies using tools like WSUS or SCCM/MECM.
• Troubleshoot and resolve 2nd/3rd line infrastructure issues.
• Monitor system performance and ensure high availability and security of systems.
• Participate in infrastructure upgrades, migrations, and project work.
• Contribute to documentation, change management, and process improvement initiatives.

What you will bring:

• Expert Active Directory experience in enterprise scale deployments.
• Cloud identity experience using Microsoft Azure AD and/or Entra.
• Identity federation experience.
• Production experience working with Microsoft and/or LINUX technologies across secure and highly available enterprise scale environments.
• Experience in DNS, PKI, Active Directory, DHCP and distributed file shares.
• Strong understanding of storage and backup technologies in physical and virtual environments.
• Working knowledge and hands-on experience building virtualisation capabilities using Broadcom/VMware technologies.
• Experience supporting the design of complex systems and contributing to high quality design documentation.
• Working knowledge of network security and TCP/IP networking.

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

Location: Salisbury OR Portsmouth

Security Clearance Level: To be eligible for Developed Vetting (DV)

Internal Recruiter: Carolyne

Salary: Up to £62k

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.

Although this role is advertised as full-time, we believe that flexibility at work can promote work/life balance, increase your motivation, reduce stress and improve performance and productivity. We support different ways of working and can offer a range of flexible working arrangements. So, if you’re interested and need to work flexibly, we encourage you to apply and talk to us about what might be possible.

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.

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.