Principal Platform Engineer

London, England, United Kingdom • Posted June 10, 2026

Job Type: Full time

Location: London, England

Posted: June 10, 2026

Category: Computer Occupations

Application Deadline: July 20, 2026

Role Description

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, DHCP) using industry best...
                

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