Principal Wintel Engineer

Leonardo Worldwide Corporation; City of London; Hybrid; GBP 45,000 - 60,000; Full time

Job summary

A leading global defence and aerospace company is seeking a 3rd Line Wintel Infrastructure Engineer in London. You will own complex issues, deploy secure systems, and collaborate with IT teams. The role requires experience in high-security environments and provides a comprehensive benefits package. Join us to make an impact in key defence operations!

Benefits

Generous leave with additional flexi-days

Pension scheme with employer contribution

Access to mental health support

Bonus scheme for performance

4,000+ online courses via Coursera

Flexible benefits including private healthcare

Hybrid working options

Qualifications

• Proficiency in security compliance documentation (e.g. RMADS).
• Working knowledge of high-security systems.
• Ability to implement and maintain security measures.

Responsibilities

• Resolve complex technical issues collaborating with teams.
• Troubleshoot escalated incidents ensuring service continuity.
• Deploy secure Windows Server environments.

Skills

Proficiency in Ivanti Application & Device Control

Experience with high-security MOD systems

Familiarity with security and compliance documentation

Tools

Windows Server 2019/2022/2025

VMware Cloud Foundation

Microsoft Endpoint Configuration Manager

Job description

Overview

Leonardo is looking for a 3rd Line Wintel Infrastructure 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.

Your Impact

• 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 practices.
• Implement and maintain infrastructure security measures such as patching, access controls, and hardening to align with compliance and internal governance.
• Use monitoring tools to proactively optimize system performance and ensure high availability.
• Create and maintain detailed technical documentation and contribute to internal knowledge sharing and mentoring.
• Participate in IT projects, ensuring infrastructure design meets both technical and business objectives.
• Collaborate closely with network, security, and application teams to deliver reliable, secure IT services.

What You’ll Bring

• Proficiency in Ivanti Application & Device Control or similar lockdown tools.
• Experience working with high-security MOD systems and secure design principles.
• Familiarity with security and compliance documentation (e.g. RMADS, SyOPs, NIST frameworks).

Core Technologies

Microsoft

• Windows Server 2019/2022/2025
• Active Directory, Group Policy, DNS, DHCP
• Exchange Server 2019, SQL Server, SharePoint 2019

VMware

• VMware Cloud Foundation
• vSphere, ESXi, NSXT, and vSAN

Endpoint & Configuration

• Windows 10 & 11
• Microsoft Endpoint Configuration Manager (MECM)

Monitoring & Observability

• Microsoft System Centre Operations Manager (SCOM)

PKI Technologies

• Microsoft Certificate Services, Hardware Security Modules (HSMs), and lifecycle key management

Security Clearance

This role is subject to pre-employment screening in line with the UK Government\'s Baseline Personnel Security Standard (BPSS). An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) may apply, including meeting eligibility requirements for The Security Check (SC) or Developed Vetting (DV). For more information please visit https://careers.uk.leonardo.com/gb/en/security-and-vetting.

Why join us

At Leonardo, our people are at the heart of everything we do. We offer a comprehensive, company-funded benefits package that supports your wellbeing, career development, and work–life balance.

• Time to Recharge: generous leave with up to 12 additional flexi-days each year.
• Secure your Future: pension scheme with up to 15% employer contribution.
• Your Wellbeing Matters: free access to mental health support, financial advice, and employee-led networks championing inclusion and diversity.
• Rewarding Performance: bonus scheme for employees at management level and below.
• Never Stop Learning: access to 4,000+ online courses via Coursera and LinkedIn Learning.
• Refer a friend: financial reward through our referral programme.
• Tailored Perks: flexible benefits including private healthcare, dental, family cover, discounts, gym memberships, and more.
• Flexible working: hybrid options; for part-time opportunities, discuss possibilities.

For a full list of our company benefits please visit our website.

Leonardo is a global leader in Aerospace, Defence, and Security. Headquartered in Italy, we employ over 53,000 people worldwide.

Be part of something bigger - apply now!

Location: GB - London - Whitehall

Contract Type: Permanent

Hybrid Working: Onsite