25 days annual leave, inclusive of up to 3 days December shut-down * Buy or sell up to 5 days’ annual leave * Two pension schemes to choose from * Private medical & dental Insurance + discounts for additional family members * Life Assurance scheme up to 4 x salary * Multiple save schemes * Electric/hybrid car leasing scheme * Cycle to work scheme * Retail discounts * Continuous professional & personal development support * Annual Wellness AllowanceForming part of our Electronic Warfare Support Group (EWOS), our Countermeasure Development team provide technical advice and support to our customers relating to countermeasure development, engineering support and delivery, as well as supporting internal initiatives relating to innovation and research, projects, training and bid delivery.You will have an opportunity to lead our in-house countermeasure simulation software tool, CounterWorX®, modelling physical interactions and phenomena across dynamic simulations. This opportunity will also expose you to working with our software development team, and the assurance process all releasable software products must follow.The team are based across two MASS sites (head office, Enterprise House, in Little Paxton, and our modern Lincoln offices on Teal Park). When project classifications allow, they tend to work three days in the office and two days from home, giving you the best of both worlds: flexibility and collaboration.How you’ll support usAs a principal modeller, you will lead a team of engineers developing models, designing and adding new features into the countermeasure software, solving customer challenges and requirements. You will be responsible for overseeing technical work for all team members, as well as line managing senior engineers.You will help shape a growing team at our head office, allowing for career development opportunities across the broader EWOS group.The invaluable experience you’ll bring, to help us achieve moreCore to this role will be your detailed understanding of Physics/Mathematical principles at degree-level, as well as experience with at least one of Electro-Optics (EO), Infra-Red (IR), or Radio Frequency (RF) sensors and systems, within a defence setting.The role will allow you to analyse, design, model (MATLAB/Python/Simulink), and verify countermeasure techniques across a variety of real-world scenarios, culminating in delivery to customers for use in operation.Your experience with EW operational doctrine, radar or electro-optics theory, countermeasure techniques, and technical leadership will help project delivery in addition to development of our in-house CounterWorX® tool.Essential experience * Knowledge of RF/EOIR countermeasures across multiple domains. * Understanding of radar theory and modes of operation. * Experience in line management. * Experience across the engineering lifecycle (Requirements, Design, Prototyping, Test, Integration, Deployment). * Writing detailed analysis and reports on countermeasure performance. * Technical leadership and tasking of junior engineers.Desirable experience * Experience programming in MATLAB/Simulink/Python. * CONOPS and TTPs for EW platforms and systems. * Experience deploying executable applications. * Mentoring and coaching of junior engineers. * Assisting with technical bid writing and estimation. * Demonstrating software products to potential customers. * Knowledge of cutting-edge technologies and their application within the EW domain. * Creating technical roadmaps for in-house software products.Our non-negotiables:Due to the highly secure nature of the projects that you will be involved with, you must be: * A UK National and eligible to work in the UK * Eligible to obtain and maintain a UK Government Security Check (SC) clearance.Who is MASSMASS is an independent, global technology company, trusted by highly secure organisations to provide advanced, digital services that manage data and keep information safe. With our heritage in defence, we offer robust solutions to sectors where security expertise is essential.Wellbeing is at the core to our culture, allowing employees to flourish and to achieve their full potential. Our people are important to us, and we take pride in our wellbeing programmes and policies that support individuals including, mental health first aiders and readily available support through our extensive employee assistance programme.We work in partnership with customers, using skilled, technical experts. We think innovatively to provide tailored, agile and resilient solutions that secure advantage, so you’re ready for digital transformation. MASS is an equal opportunities employer; we know that our people are smart, skilled and motivated and in return we provide a friendly workplace where everyone is valued and has the chance to make an impact.Apply today to see how working for MASS could work for you