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C++ Software Engineer

Job in Portchester, Fareham, Hampshire County, PO16, England, UK
Listing for: MASS
Full Time position
Listed on 2025-12-19
Job specializations:
  • Software Development
    Software Engineer
Salary/Wage Range or Industry Benchmark: 50000 - 65000 GBP Yearly GBP 50000.00 65000.00 YEAR
Job Description & How to Apply Below
Location: Portchester

C++ Software Engineer – Portsdown West (PO17) – Full-time – Onsite

* Salary £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

Our Electronic Warfare Operations Support (EWOS) team. A group of over 60 engineers, scientists, and former military specialists who combine their expertise to help our customers protect their people and platforms safe while achieving their full operational potential.

About the Role

MASS is growing its Electronic Warfare Operational Support (EWOS) team at Portsdown West, (Fareham, Hampshire). We are looking for a talented C++ Software Engineer with experience of working with simulation models, to support cutting edge research, development, and delivery projects, led by our technical customer, Dstl.

This role is largely based within an in-house simulation framework (ITASE) with responsibilities to include:

* Developing toolsets, models, and integration activities in the ITASE framework.

* Incorporating or adapting additional existing Dstl data/models (e.g. signatures) into studies.

* Library linking, development from theory, and re-coding of existing algorithms and data.

* Understanding and aligning assumptions and data across components.

* Understanding and implementing the interactions of multiple entities in a scenario.

Within the role, you will have the opportunity to influence real-world operations through the software you develop. This could be through behavioural effects within a faster-than-real-time simulation environment, or plugins to interface hardware models in a real-time environment. This role will offer the variety and autonomy to showcase your skills as a software developer.

Given the importance of assurance to the end user, your knowledge of the software development lifecycle and modern technologies (e.g. HPC, distributed architectures focusing on edge computing) is essential to better enable development at pace.

This work will allow you the opportunity to interact with customers, understanding how the software models are to be used, and their high-level requirements. Your creativity and autonomy will help translate these asks into deliverable software products.

What we are looking for:

* Strong background in software development for simulation environments.

* Strong C++ programming skills.

* Experience with Visual Studio/Windows/Linux development tools.

* Clear communication skills to explain/adapt models.

* Working autonomously to solve unique problems.

Supporting

Skills:

* RF system knowledge and/or broader systems engineering experience

* Experience using MATLAB or Python (model integration).

* Familiarity with Defence/Air Platform protection systems and threat systems (e.g. SAMs, IADS, Sensors, FPVs).

* Knowledge of RF countermeasure and flyout simulation tools, ideally gained within a defence setting.

* Experience with HPC architectures.

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

Who is MASS?

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.

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.

Join MASS and play a key role in operational analysis that strengthens defence capability and protection
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