Expire in: a month
Principal Modeller – Countermeasures
Location: Little Paxton PE19 (Head Office) – Hybrid working
Clearance: SC required
Salary: DOE with excellent benefits
Why join us?
At MASS, people are at the heart of what we do. As part of our Electronic Warfare Support Group (EWOS), you’ll work alongside over 60 engineers, scientists, and specialists, helping to keep people and platforms safe.
We offer a comprehensive reward package, including:
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25 days annual leave (including up to 3 days Christmas shut-down)
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Buy or sell up to 5 days’ leave
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Two pension schemes to choose from
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Private medical & dental insurance (with family discounts)
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Life assurance up to 4x salary
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Multiple savings schemes
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Electric/hybrid car leasing scheme & cycle-to-work scheme
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Annual Wellness Allowance
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Retail discounts
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Continuous learning and career development support
The role
We’re looking for a Principal Modeller to lead our Countermeasure Development team. This is a unique opportunity to take ownership of our in-house simulation tool, CounterWorX®, used to model complex physical interactions and countermeasure performance in real-world scenarios.
You’ll oversee a team of engineers, guide technical delivery, and line manage senior engineers. You’ll also collaborate with our software development team, contributing to the assurance of software products before release.
Our teams split their time between the office and home (typically 3 days in, 2 days working from home), offering the perfect mix of flexibility and collaboration.
What you’ll bring
We’re looking for someone who combines deep technical expertise with leadership experience.
Essential:
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Strong knowledge of RF and/or EO/IR countermeasures across multiple domains
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Understanding of radar theory and modes of operation
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Degree-level understanding of Physics/Mathematical principles
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Proven line management experience
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Experience across the full engineering lifecycle (requirements, design, prototyping, testing, integration, deployment)
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Ability to write detailed analysis and technical reports
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Experience providing technical leadership and mentoring junior engineers
Desirable:
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Programming in MATLAB, Simulink or Python
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Familiarity with CONOPS and TTPs for EW platforms/systems
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Experience deploying executable applications
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Technical bid writing and estimation experience
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Knowledge of emerging technologies in the EW domain
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Experience creating technical roadmaps for in-house tools
About you
You’ll be comfortable leading from the front—balancing hands-on modelling and analysis with coaching and developing your team. With a strong defence background, particularly in radar, EO/IR systems, or countermeasures, you’ll have the opportunity to shape a growing team and directly impact operational capability.
About MASS
MASS is a trusted, independent global technology company, delivering secure, advanced digital services for defence and other highly regulated sectors. With our heritage in electronic warfare and data security, we provide tailored, innovative, and resilient solutions that give our customers the edge.
Wellbeing is at the core of our culture. From mental health first aiders to our employee assistance programme, we support our people to flourish and achieve their full potential.
We’re proud to be an equal opportunities employer, offering a workplace where everyone is valued, supported, and empowered to make an impact.
Ready to take the lead in shaping advanced countermeasure solutions?
Apply today and see how a career with MASS could work for you
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