Full-time

Principal Systems Engineer

Posted by Copello • Maidenhead, Berkshire, United Kingdom

📍 Maidenhead, Berkshire 🕒 February 21, 2026

About the Role

Principal Systems Engineer – Defence.
Requires SC Clearance to start and DV eligibility.
Location - Berkshire 5 days per week.
Salary – Competitive DoE.

We’re supporting a leading organisation operating at the forefront of defence and secure systems engineering, looking to appoint an experienced Principal Systems Engineer to take a key leadership role across complex, high-impact programmes.

This is an opportunity to work on mission-critical systems in a security-sensitive environment, providing technical leadership across the full systems lifecycle while guiding multidisciplinary engineering teams.

The Role
• Lead the development, integration and delivery of complex systems across the full lifecycle
• Provide technical oversight and assurance, ensuring solutions meet stakeholder, safety and security requirements
• Manage and mentor multidisciplinary engineering teams
• Own and review requirements, architecture and technical documentation
• E...

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