Principal Platform Engineer

Job Description:

The Leonardo Cyber Security Division is looking to recruit a Principal Platform Engineer to join its engineering team.

As a Principal Platform Engineer, you will typically be leading the technical work and small teams within a large team on the design, development and testing of secure systems, including, but not limited to; Information Management Systems, Command and Control systems, Security Monitoring of IT, IoT and CNI systems and services.

In this role you will have the opportunity to take ownership/implement the engineering delivery of one or more work packages, including the planning, estimation, execution and progress reporting of own workload and that of other team members.

Your Impact:

In this role you will have the opportunity to take ownership/implement the engineering delivery of one or more work packages, including the planning, estimation, execution and progress reporting of own workload and that of other team members.

• System Design – you will contribute to system design and low-level design using technical experience, judgement and best practice.
• Development, integration and test of system solutions including development of scripts in support of system automation and integration.
• Progress and status reporting to internal customers.
• Configuration and administration of system security tools including SIEM systems, IDS/IPS, Endpoint Detection and Response and others.
• Troubleshooting system issues and faults to diagnose problems and offer proposed solutions.
• Implementation of security control measures, including enabling operating system lockdown controls.
• Development of systems engineering artefacts, including documentation to support the delivery and maintenance of system solutions.
• Mentoring other team members in area of specialism.
• Providing specialist technical support to the business unit, supporting the project or wider programme (potential involvement in bid development/evaluation).
• Working with external third parties such as vendors / resellers, to develop robust & costed solutions.

What you’ll bring:

• Demonstrable experience within a systems engineering or IT solution delivery role, preferably working in a secure environment.
• Strong all round technical ability with an excellent working knowledge of network and systems infrastructure technologies.
• An awareness of cyber security capabilities is advantageous.
• Microsoft Active Directory services;
• Hands on working knowledge and experience of Windows and Linux server installation and builds;
• Virtualisation technologies including VMware and Microsoft Hyper-V;
• Workstation builds and deployments including Microsoft WDS and MDT;
• A good working knowledge of Microsoft Office suite of products;
• A good working knowledge of the following Microsoft Products (e.g. Exchange, SQL, SCOM, ISA/TMG, IIS, SharePoint);
• Practical experience of implementing security policies and system lockdowns including Microsoft Active Directory GPOs, application whitelisting/blacklisting and device/media control;
• Implementation and management of enterprise class Patching/Update solution including Microsoft WSUS.
• The role absolutely requires the candidate to be cleared to be a sole UK national with DV clearance.

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, this could include meeting the eligibility requirements for The Security Check (SC) or Developed Vetting (DV). 

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. Whether you're looking to grow professionally, care for your health, or plan for the future, we’re here to help you thrive.

• Time to Recharge: Enjoy generous leave with the opportunity to accrue up to 12 additional flexi-days each year.
• Secure your Future: Benefit from our award-winning 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 (Enable, Pride, Equalise, Armed Forces, Carers, Wellbeing and Ethnicity).
• Rewarding Performance: All employees at management level and below are eligible for our bonus scheme.
• Never Stop Learning: Free access to 4,000+ online courses via Coursera and LinkedIn Learning.
• Refer a friend: Receive a financial reward through our referral programme.
• Tailored Perks: Spend up to £500 annually on flexible benefits including private healthcare, dental, family cover, tech & lifestyle discounts, gym memberships and more.
• Flexible working: Flexible hours with hybrid working options. For part time opportunities, please talk to us about what might be possible for this role.

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 including 8,500 across 9 sites in the UK. Our employees are not just part of a team—they are key contributors to shaping innovation, advancing technology, and enhancing global safety.

At Leonardo we are committed to building an inclusive, accessible, and welcoming workplace. We believe that a diverse workforce sparks creativity, drives innovation, and leads to better outcomes for our people and our customers. If you have any accessibility requirements to support you during the recruitment process, just let us know.

Be part of something bigger - apply now!

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