Principal Platform Engineer

Job Description:

Your Impact

Leonardo is looking for a 3rd Line Platform Engineer to join our collaborative and skilled team supporting a critical MOD site. This is an exciting opportunity to serve as a Subject Matter Expert (SME) in Windows-based enterprise infrastructures. You'll play a central role in the design, deployment, and support of high-security systems that underpin key defence and aerospace operations.

This role is based full-time on site in London and requires DV clearance.

What you will do as a Principal Platform Engineer

• Take ownership of complex technical issues through to resolution, collaborating with users and other IT teams.


• Provide expert-level troubleshooting for incidents escalated from 1st and 2nd line support, ensuring consistent and minimal disruption to services.


• Deploy and integrate secure Windows Server environments (Active Directory, Group Policy, DNS, DH...