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Salary
$66k – $86k per year
Location
Hybrid (United Kingdom)
Seniority
Senior
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 11, 2026. First seen by Alion on Sep 11, 2026.

Overview
Company
Impact
Profile match
Expert countermeasures, secure software development, and UK sovereign IT services. We provide the technical and operational expertise required for high-threat environments.

Senior Simulation Engineer - St Neots (PE19) | Permanent | On-site

  • £50,000 - £65,000
  • 25 days annual leave inclusive of up to 3 days Christmas shut-down
  • Buy or sell up to 5 days’ annual leave
  • Annual Wellbeing allowance
  • Two pension schemes to choose from
  • Private Medical Insurance + discounts for additional family members
  • Life Assurance scheme up to 4 x salary
  • Share Save scheme
  • Electric/Hybrid Car leasing scheme
  • Cycle to work scheme
  • Retail discounts
  • Career development support

Come and join our expanding Electronic Warfare Operations Support Group (EWOS) which is made up of 80+ Electromagnetic Warfare (EW) specialists. From all manner of backgrounds, our engineers, scientists, and ex-military personnel combine their experience to help our customers achieve true operational potential and help keep their people and platforms safe.

Do you enjoy working with high-fidelity gaming engines to put cutting-edge EW systems through their paces? Do you enjoy developing software models to add realism and scale to scenarios? This role blends virtual and constructive players with live hardware models to achieve the most realistic testbed outside of testing in the real-world. Your skills as a physics or software modeller will be showcased as part of our first-of-its-kind synthetic range.

With the continued proliferation of visible light-based (electro-optical) game engines, the use of state-of-the-art commercially available software is a must in any synthetic range. This is just one region of the electromagnetic spectrum our solution has to cover. In addition to visible light, the range must also model infra-red (IR) and Radio Frequency (RF) interactions, all whilst ensuring these scene generation tools are coherent and aligned.

Working full-time at our St Neots site, you will help deliver high-importance synthetic trials to a variety of government and industry partners, each with their own requirements to be verified. Your ability to develop and use spectrum-wide scene generation and behavioural models, whilst ensure simulation runs are automated and repeatable will greatly impact the success of these trials.

The invaluable experience you’ll bring, to help us achieve more.

Essential:

  • Experience writing test automation scripts for real-time systems (MATLAB, Python, LabView etc.).
  • Experience working within a Virtual or Constructive environments (e.g. integrating software models, scripting behaviours, and synchronising outputs).
  • Experience integrating software or hardware models (deployed to bespoke real-time operating systems), using ICDs/APIs to ensure behaviour and timings are correct.
  • Ability to solve problems in a methodical manner.
  • STEM degree.

Desirable:

  • Generation of test harnesses for software model interfaces (TCP/IP, UDP, JTAG, UART, Digital IQ etc.).
  • Development of virtual scenarios (including players, terrain, atmosphere, behaviour) using commercial software (VR Forces, MACE, VBS4, Infinite Studio etc.) to meet customer testing requirements.
  • Familiarity with synchronisation and timing architectures.
  • Knowledge of network architectures and debugging/fault finding (packet loss/delay, rubber-banding etc.).
  • Awareness of software development best-practices (source control, unit testing etc.).
  • Knowledge of EW systems.

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.

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 SC-level security clearance

Apply today to see how working for MASS could work for you!

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