Systems Engineer - Bristol Filton Onsite - £85 per hour (£630 per day) Inside IR35 - 12 Month Contract (Extension Likely) We are currently recruiting for an experienced Systems Performance Modelling Engineer to join a major UK engineering and defence programme. This is an excellent opportunity to work on complex, mission-critical systems where modelling and simulation play a key role in shaping future capabilities. Working within a multidisciplinary engineering team, you will be responsible for developing, analysing and enhancing system performance models, supporting technical decision-making across the product lifecycle. Key Responsibilities Develop and maintain performance models using MATLAB and Simulink Conduct system-level modelling, simulation and analysis activities Analyse system behaviour and performance against customer requirements Support design reviews and provide evidence-based recommendations Work closely with systems, software and hardware engineering teams Produce technical reports and present findings to stakeholders Support verification, validation and acceptance activities Contribute to the development of modelling techniques and engineering best practice Essential Experience Experience developing models using MATLAB and Simulink Background in systems engineering, modelling, simulation or performance analysis Strong problem-solving and analytical skills Ability to work within a highly regulated engineering environment If you don't tick every box, we would still like to hear from you. Candidates with experience in MATLAB, Simulink, systems modelling, simulation, defence engineering, controls, algorithms or related engineering disciplines are encouraged to apply. Guidant, Carbon60, Lorien & SRG - The Vertage Group Portfolio are acting as an Employment Business in relation to this vacancy