Salary: £40,000 - 65,000 per year Requirements: Systems Engineering System Design Documentation Systems Modelling (UML/SysML) Test and acceptance of integrated systems Experience across the Engineering Delivery Lifecycle Requirements Management (DOORS/Enterprise Architect etc.) Desirable: Coding experience (JavaScript or MATLAB/Simulink) Defence Industry knowledge of EW systems Previous ex-Military experience with EW systems (operator, maintenance, support, or acquisition). Responsibilities: Help with the design, implementation, and support of new capabilities. Participate in local and worldwide trials using existing and future technology. Work autonomously with unprecedented access to the customer. Ensure the success of deployment, verification, and validation. Act as the primary point of contact for stakeholder enquiries. Gather stakeholder use cases and write requirements specifications (URD and SRDs). Provide ongoing support and continuous assistance during deployment. Leverage Model Based Systems Engineering (UML/SysML/Archimate) skills in design activities. Technologies: Architect ArchiMate Support JavaScript Matlab UML Security More: We are MASS, and we invite you to join our expanding Electronic Warfare Operations Support Group (EWOS) at our Porton Down location in Salisbury. Our team comprises over 60 electronic warfare specialists with diverse backgrounds, including engineers, scientists, and ex-military personnel. We are dedicated to helping our customers achieve operational potential while ensuring the safety of their people and platforms. We offer a competitive salary between £40,000 to £65,000, along with a comprehensive benefits package that includes generous annual leave, a wellbeing allowance, private medical insurance, and support for career development. In our culture, wellbeing is paramount, with programs designed to help you flourish and reach your full potential. last updated 4 week of 2026