Principal Development Engineer

1 month ago


Little Paxton Cambridgeshire, United Kingdom MASS Full time

Principal Countermeasure Development Engineer – St. 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
~ Electric/hybrid car leasing scheme
~ Cycle to work scheme
~ Retail discounts
~ Continuous professional & personal development support
~ Annual Wellness Allowance


Forming 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.

As 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 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 more

Core 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.

Experience across the engineering lifecycle (Requirements, Design, Prototyping, Test, Integration, Deployment).
Writing detailed analysis and reports on countermeasure performance.
Experience programming in MATLAB/Simulink/Python.
Mentoring and coaching of junior engineers.
Assisting with technical bid writing and estimation.
Demonstrating software products to potential customers.
Creating technical roadmaps for in-house software products.

Due to the highly secure nature of the projects that you will be involved with, you must be:
MASS 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.

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 think innovatively to provide tailored, agile and resilient solutions that secure advantage, so you’re ready for digital transformation.



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