Principal Systems Engineer(Software/Simulation) Portsmouth-Broad Oak Competitive Salary + 10-20% BonusMy client a multinational Aerospace and Defence organisation are looking for a Principal Systems Engineer to join their team working on a hybrid basis.You will join the clients Simulation and Training sector at Broad Oak Works Portsmouth, part of the Maritime and Land Defence Solutions business, working on the MIMESIS product.As a System Technical Lead within the MIMESIS team, you will have technical responsibility for the design and development of new modules/content for the product, reviewing and approving lower level documentation. You will also provide technical guidance to the engineering team, working closely with System Design Authority, to develop and support MIMESIS for their customers.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 AuthorityApply the principles of Systems Engineering to develop software-based Simulation Systems across the full engineering lifecycleUndertake Simulation Systems equipment design, network design and software designLead requirement decomposition and manage specifications using tools like IBM DOORS NextDirect architectural modelling and interface definitions in tools such as CATIA Magic (Cameo)Drive system integration and define acceptance strategies for software-based systemsLead technical reviews and ensure compliance with customer,