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Principal Systems Engineer

BAE SystemsSouthampton, Hampshire🇬🇧United KingdomPosted 2 Apr 2026

Why This Role Stands Out

This Principal Systems Engineer role at BAE Systems offers a rewarding opportunity to shape advanced defense technology while developing your expertise in MBSE and complex problem-solving, with a competitive salary and bonus. You'll thrive here if you are a proactive leader passionate about systems thinking and driving innovation within a reputable, forward-thinking organization. Apply today to contribute to critical projects and advance your career in a dynamic environment.

Quick Overview

Seniority
Leader
Work mode
On Site
Location
Southampton, Hampshire, United Kingdom

Job Description

Principal Systems Engineer | Southampton, United Kingdom | On-site | £58,000

This employer is a globally recognised leader in defence, aerospace, and security solutions, dedicated to pioneering progress and protecting what matters most. They offer opportunities to shape the future with advanced technology and a commitment to a safer world, from the ocean depths to outer space.

The Role

  • Apply Systems Thinking to understand complex problem spaces, manage constraints, and balance trade-offs.
  • Drive Requirements Leadership and Management, ensuring clear capture, decomposition, traceability, and change control.
  • Champion Model-Based Systems Engineering (MBSE) by modeling system behavior, structure, and interfaces.
  • Utilize Problem Decomposition & Complexity Management to break down multi-domain challenges and maintain decision records.
  • Contribute to Lifecycle Delivery and Systems Integration, tailoring processes and planning integration activities.
  • Provide Technical Leadership and Mentorship to junior engineers, promoting best practices.

What You'll Need

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

What's On Offer

  • A career with purpose and limitless possibilities in a leading technology-driven industry.
  • Opportunities for lifelong learning and professional development.
  • A supportive culture that values diversity and inclusion.
  • Recognition for contributions and rewards tailored to well-being.

Apply via Haystack today!

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