At a Glance
- Tasks: Lead the design and integration of secure platforms for defence and national security.
- Company: Join a high-profile programme focused on mission-critical platform security.
- Benefits: Competitive daily rate, flexible working patterns, and opportunities for professional growth.
- Other info: Work in a dynamic environment with excellent career advancement opportunities.
- Why this job: Make a real impact in national security while tackling complex technical challenges.
- Qualifications: Extensive experience in platform engineering and active UK DV Clearance required.
The predicted salary is between 60000 - 75000 £ per year.
Location: Yeovil (Onsite)
Rate: £680 - £713 per day (Inside IR35)
Contract: 12 Months
Working Pattern: Full-time or condensed week available (work 3 long days and get paid for 5)
Security Clearance: Active UK Developed Vetting (DV) Clearance required
We're seeking an experienced DV Cleared Principal Platform Engineer to join a high-profile programme delivering secure, mission-critical platforms supporting defence, government, and national security operations. This is an opportunity to work at the forefront of platform security, enterprise infrastructure, and cyber engineering, taking ownership of complex technical challenges within highly secure environments. You'll play a key role in designing, integrating, and delivering resilient platforms that underpin critical operational capabilities.
The Role
As a Principal Platform Engineer, you will act as a technical authority across platform engineering disciplines, combining hands-on technical delivery with leadership, mentoring, and strategic input.
Key responsibilities include:
- Leading the design, implementation, and integration of secure platforms across on-premise, hybrid, and cloud environments.
- Capturing and analysing complex customer requirements to develop robust technical solutions.
- Producing high-level and detailed technical designs aligned to secure-by-design principles.
- Owning technical delivery across work packages, including planning, estimation, and reporting.
- Providing technical leadership, mentoring, and capability development within engineering teams.
- Driving innovation, automation, and continuous improvement initiatives.
- Integrating enterprise infrastructure, security, and identity services within complex environments.
- Engaging with stakeholders to present, justify, and deliver technical solutions.
Essential Experience
Candidates must demonstrate strong experience across several of the following areas:
- Platform & Infrastructure Engineering
- Windows and Linux operating systems.
- VMware and Hyper-V virtualisation technologies.
- Software-defined datacentre architectures.
- VMware Cloud Foundation (VCF), including:
- vSphere
- vSAN
- NSX-T
- Aria Suite
- Network virtualisation and micro-segmentation.
- Identity, Access & Security
- Privileged Access Management (CyberArk or equivalent).
- Secure credential storage, rotation, and access control.
- Public Key Infrastructure (PKI) design and implementation.
- Certificate life cycle management.
- Cryptographic principles and secure communications.
- Enterprise Integration
- Active Directory.
- Identity and access management solutions.
- Monitoring and SIEM platforms.
- Enterprise security service integration.
- Networking & Automation
- TCP/IP, DNS, DHCP, and Firewall technologies.
- Automation and Scripting using:
- PowerShell
- Bash
- Python
- Ansible
- Terraform
- Infrastructure as Code and platform automation.
- Security & Systems Engineering
- Cyber security controls and accreditation requirements.
- Systems engineering life cycle experience.
- Delivery within highly secure, air-gapped, defence, or government environments.
Desirable Experience
Experience in any of the following areas would be advantageous:
- VMware Certified Advanced Professional (VCAP).
- AWS and Azure cloud platforms.
- DevSecOps and CI/CD pipelines.
- VxRail and hyper-converged infrastructure.
- VMware Cloud Foundation life cycle automation.
- SIEM/SOC integration.
- Hardware Security Modules (HSMs), including Thales.
- Cross-domain and secure communications environments.
- Kubernetes and Docker container platforms.
What We're Looking For
Extensive experience delivering secure enterprise platforms. Strong technical leadership alongside hands-on engineering capability. Excellent problem-solving and stakeholder engagement skills. Experience operating within defence, government, or national security environments. Active UK DV Clearance.
If you're a technically strong, DV-cleared platform engineer looking for a long-term contract working on nationally significant programmes, we'd like to hear from you.
Locations
Principal Infrastructure Engineer in Somerset, Yeovil employer: CBS Butler
Join a leading organisation in Yeovil that prioritises innovation and security within the defence sector. As a Principal Infrastructure Engineer, you'll benefit from a flexible working pattern, allowing you to achieve a better work-life balance while contributing to mission-critical projects. With a strong emphasis on employee growth and technical leadership, this role offers a unique opportunity to advance your career in a supportive and dynamic environment.
