Principal Systems Engineer

Principal Systems Engineer | Southsea, United Kingdom | On-site | Up to £58,000 + 10% bonus

We're hiring on behalf of a globally recognised leader in the defence, aerospace, and security sectors. This organisation is at the forefront of advanced technology, shaping a safer future through innovation and pioneering progress. They offer a dynamic and supportive environment where individuals can build careers with purpose.

The Role

• Apply Systems Thinking to understand complex problem spaces, manage constraints, and balance trade-offs.
• Lead and manage requirements, including capturing, decomposing, and agreeing requirements, while maintaining traceability and managing change.
• Champion Model-Based Systems Engineering (MBSE) by modelling system behaviour, structure, and interfaces.
• Apply Problem Decomposition & Complexity Management to break down multi-domain challenges and visualise dependencies.
• Contribute to Lifecycle Delivery & Systems Integration, tailoring processes and preparing for reviews.
• Provide technical leadership, acting as a technical authority, engaging with stakeholders, and mentoring junior engineers.

What You'll Need

• Strong experience in applying systems engineering across the full lifecycle, including requirements management, architecture definition, integration, MBSE, and V&V.
• Experience with high-level design methodologies and architectures (e.g., UAF, NAF, TOGAF, SysML, UML) and practical MBSE capability using tools like Enterprise Architect.
• Experience using requirements and interface management toolsets (e.g., DOORS) and maintaining traceability.
• Knowledge of applying Systems Engineering standards and principles, such as ISO 15288.
• Exposure to system integration and verification activities to ensure functional and performance needs are met.
• Degree-level qualification (or equivalent experience) in a STEM or systems-related discipline, working towards or operating at Chartered Engineer (CEng) level.

What's On Offer

• A competitive salary package including a bonus.
• Opportunities for lifelong learning and professional development.
• A supportive culture focused on wellbeing and a balanced lifestyle.
• The chance to contribute to meaningful work that protects and pioneers progress.
• Build a career with purpose in a globally recognised organisation.

Apply via Haystack today!