Salary: £46,000 - 66,000 per year Requirements: 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 Responsibilities: Provide hands-on technical leadership with a team of systems and software engineers 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 like 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 & business requirements Technologies: IBM Support JIRA Network More: We are a multinational Aerospace & Defence organization looking for a Principal Systems Engineer to join our Simulation and Training team at Broad Oak Works in Portsmouth. This role supports our Maritime and Land Defence Solutions business, specifically working on the MIMESIS product. We offer a competitive salary, a bonus structure of 10-20%, and a flexible, hybrid working environment. Join us to help shape the future of simulation systems while providing technical leadership and guidance to our engineering team. last updated 8 week of 2026