Principal Platform Engineer - Yeovil

• Act as the technical authority on one or more platform engineering domains, providing specialist domain expertise to projects and programmes.
• Lead the design and implementation of secure platforms across on-premise, hybrid, and cloud environments.
• Capture, analyse, and interpret complex customer requirements to drive system design and architecture.
• Develop high- and low-level designs, ensuring alignment with secure-by-design principles.
• Take ownership of technical delivery within work packages, including planning, estimation, and progress reporting.
• Mentor, coach, and develop junior and senior engineers, raising technical capability across the community.
• Provide input to technology strategies, feasibility studies, and innovation projects.
• Engage with internal and external stakeholders, presenting technical solutions and justifying design decisions.

Technologies:

• AWS
• Ansible
• Azure
• Bash
• CI/CD
• Cloud
• DevSecOps
• Docker
• Hyper-V
• Support
• Kubernetes
• Linux
• PowerShell
• Python
• Security
• TCP/IP
• Terraform
• VMware
• Windows
• DevOps

• Extensive technical expertise across multiple platform domains, with a track record of delivering secure solutions.
• Ability to balance hands-on engineering with technical leadership and mentorship.
• Problem-solving mindset, with the ability to innovate and recommend the best approach for complex challenges.
• Windows and Linux operating systems experience.
• Virtualisation platforms experience, including VMware and Hyper-V.
• Cross-domain solutions design and implementation experience for data transfer between security domains.
• Secure data handling and policy enforcement experience, including sanitisation, validation, and filtering.
• Experience implementing controlled and auditable data transfer mechanisms.
• Networking concepts knowledge, including TCP/IP, DNS, DHCP, and firewalls.
• Automation and scripting experience with PowerShell, Bash, Python, Ansible, and Terraform.
• Knowledge of cyber security controls and accreditation requirements.
• Experience across the systems engineering lifecycle.
• Experience designing and assuring secure data flows across trust boundaries.
• Experience delivering within highly controlled or secure environments, such as cross-domain, air-gapped, or defence.
• Desirable: experience with cross-domain or secure transfer solutions such as Opswat or similar.
• Desirable: data diode or one-way transfer architectures experience.
• Desirable: integration with security tooling such as SOC, SIEM, and monitoring platforms.
• Desirable: performance and throughput optimisation for secure data transfer systems.
• Desirable: expertise with cloud platforms such as AWS and Azure, and Infrastructure as Code.
• Desirable: hands-on use of DevSecOps tools and CI/CD pipelines.
• Desirable: containerisation platform experience, including Kubernetes and Docker.
• This role is subject to pre-employment screening in line with the UK Governments Baseline Personnel Security Standard (BPSS).
• An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) will apply.
• This role requires Developed Vetting (DV) clearance prior to starting.

We are partnering directly with Leonardo to hire a Principal Platform Engineer for our Cyber & Security Solutions Division. This permanent role is based at our Yeovil site with a blended hybrid working model, combining home and onsite working to support close collaboration with our team and customers. We offer a comprehensive, company-funded benefits package that supports wellbeing, career development, and work-life balance, including generous leave with up to 12 additional flexi-days each year, an award-winning pension scheme with up to 15% employer contribution, free mental health and financial advice support, access to 4,000 online courses through Coursera and LinkedIn Learning, flexible benefits up to £500 annually, and flexible hours with hybrid working options. We are a global leader in Aerospace, Defence, and Security, with over 53,000 employees worldwide and 8,500 across 9 UK sites. We are committed to building an inclusive, accessible, and welcoming workplace where