Job Title: Principal Systems Engineer – Software/Simulation
Location: Portsmouth – Broad Oak
Salary: Up to £75,900 (dependent on skills and experience)
Hybrid and flexible working arrangements are available – please speak to your recruiter about the options for this role.
What You’ll Be Doing
* Provide hands‑on technical leadership with a team of systems and software engineers, and directly support the product System Design Authority.
* Apply the principles of Systems Engineering to develop software‑based Simulation Systems across the full engineering lifecycle.
* Undertake Simulation Systems equipment design, network design and software design.
* Lead requirement decomposition and manage specifications using tools such as IBM DOORS Next.
* Direct architectural modelling and interface definitions in tools such as CATIA Magic (Cameo).
* Drive system integration and define acceptance strategies for software‑based systems.
* Lead technical reviews and ensure compliance with customer, legislative and business requirements.
Your Skills and Experiences
* Demonstrable experience of the application of Systems Engineering for software‑based products.
* Expertise in Systems Engineering and Software integration lifecycle principles (ISO 15288 and 12207).
* Strong background in requirements management (e.g., IBM DOORS Next – desirable).
* Familiarity with engineering lifecycle models (Waterfall & Agile) and tools (e.g., JIRA).
* Background in software development and integration.
* Technical leadership and ability to guide teams across disciplines to shape design solutions.
Benefits
* Competitive pension scheme.
* Employee share plans.
* Flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts.
* Potential annual incentive.
MIMESIS Product Team
You will join our Simulation and Training sector at Broad Oak Works Portsmouth, part of BAE Systems Maritime and Land Defence Solutions, working on the MIMESIS product. MIMESIS provides a battlespace simulation of the maritime world, accurately modelling the movement and behaviour of ships, submarines and other platforms, and digitally replicating their unique capabilities (sonars, radars, weapons). As a System Technical Lead, you will have technical responsibility for the design and development of new modules/content, reviewing and approving lower‑level documentation, and providing technical guidance to the engineering team.
Why BAE Systems?
BAE Systems is a place where you can make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity and merit, and where you’re empowered to fulfil your potential. We welcome applicants from all backgrounds and strive to make our recruitment processes as inclusive as possible. If you have a disability or health condition that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.
Security and Eligibility
Many roles at BAE Systems are subject to security and export control restrictions. These restrictions mean that factors such as your nationality, any prior nationalities and your place of birth can restrict the roles you are eligible for. All applicants must achieve a Baseline Personnel Security Standard. Some roles also require higher levels of National Security Vetting, typically requiring 5 to 10 years of continuous residency in the UK.
Closing Date
Closing Date: 1st December 2025
We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.
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