Salary: Negotiable plus benefits, pension (7% contribution), 25 days holiday & life insurance We are looking for senior software engineers with a range of levels of experience including designing and delivering software applications. We are a small but rapidly growing consultancy, owned by four highly experienced and recognised practitioners in UK defence consultancy. We are looking for candidates with a mix of technical expertise and interpersonal skills, able to work independently or in small teams. The Role: As a Software Engineer, you will play a major role in developing code in the Software Modelling and Simulation, autonomy and geospatial fields, along with providing key advice around innovation and new techniques to stakeholders. You will be designing solutions for complex challenges that will meet and exceed user requirements. Responsibilities will include: Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments. Applying mathematical and computational methods to tackle real world problems, applying tools and techniques, and developing novel approaches where required. Delivering technical consulting projects and products, with the opportunity to lead some of these Building new relationships and maintaining current customer relationships. Expertise Required: Senior Software Engineer : At least 5 years experience, including designing and delivering software applications. About You: We are looking for candidates who can help the company grow and can offer exciting opportunities for those with the drive to develop their own skills and those of the company. We offer competitive salaries and packages, and the opportunity for rapid advancement for the right candidates. The successful candidate must be able to demonstrate the following attributes: Essential At least 5 years experience in designing and implementing performant software applications. Apply mathematical principles or statistical approaches to solve problems in scientific or applied fields. Proficient in C/C++ or C# and Python. Ability to understand and describe a range of software modelling and simulation techniques. Ability to analyse use cases and project data context to determine specifications and requirements. Experience in one or more of the following technical disciplines: Videogame engine technology (e.g. Unreal Engine, Godot) Entity or Event based Simulation Robotics and Autonomous Systems Understand varied codebases and be confident in making changes to large projects. Understand performance and hardware constraints. Building customer and stakeholder relationships. Supporting and leading authoring of technical reports and presenting to customers. Be willing to travel across UK and comfortable to work at client sites for periods. Desirable: Experience working with Defence Digital, DE&S, Dstl, Frontline Commands or UK Defence industry. The ideal candidate will be educated to degree level or have equivalent relevant experience. Wed love you to bring a strong STEM / computing background. Proficient in MS Office, especially Excel, PowerPoint, Word. Other Requirements: Candidates must have an existing right to live and work in the UK. Candidates will need to undergo an internal BPSS check prior to gaining site access. Candidates will also need to either hold a current SC clearance or be willing and eligible to undergo a Security Clearance check (SC level) upon starting their employment with the company. To gain SC clearance you will normally need at least 5 years UK residency. TPBN1_UKTJ

Software Engineer

Salary:Competitive, negotiable based on experience, plus benefits including a 7% pension contribution, 25 days holiday, and life insurance

Location:Portsmouth, hybrid working

Sirius Digital is a trusted provider of expertise in Software Engineering, Data Science, and AI, supporting clients in the defence, nuclear, space, and energy sectors. We specialise in software modelling and simulation, robotics and autonomous systems, as well as data science and engineering, delivering technical consultancy and innovative solutions.

We are seeking a Software Engineer who combines strong technical skills with problem-solving ability and effective communication. You will work independently or as part of small teams, helping Sirius Digital grow while advancing your own expertise. We offer a competitive benefits package and clear opportunities for rapid career progression.

Key Responsibilities:

• Deliver technical consultancy projects to a high standard
• Develop and implement software solutions across areas such as wargaming, simulation, autonomous systems, digital twins, and synthetic environments
• Build and sustain strong client relationships
• Apply mathematical and computational techniques to solve real-world problems, developing innovative approaches as needed

What Were Looking For:

• Experience designing and delivering performant software applications, ideally within a technical consultancy environment
• Knowledge of software modelling and simulation techniques
• Ability to analyse requirements and define technical specifications
• Experience in one or more of the following: videogame engine technology (e.g., Unreal Engine, Godot), entity or event-based simulation, robotics, and autonomous systems
• Proficiency in C/C++, familiarity with Python, C#, Zig.
• Willingness to learn new technologies and programming languages
• Ability to apply mathematical or statistical methods to scientific or applied challenges
• Confidence working with large codebases and understanding hardware/performance constraints
• Strong interpersonal skills for client and stakeholder engagement
• Experience preparing technical reports and presenting to customers
• Willingness to travel within the UK and work on client sites as required

Desirable:

• Background working with Defence Digital, DE&S, Dstl, Frontline Commands, or the UK Defence industry
• Degree in a STEM or computing discipline, or equivalent experience
• Proficiency with MS Office (Excel, PowerPoint, Word)

What We Offer:

• Mentoring, internal and external training, and access to sector specialists and online learning
• Comprehensive benefits including a 7% pension contribution, private healthcare, life assurance, additional holiday purchase options, and an electric vehicle scheme

Other Requirements:

Candidates must have an existing right to live and work in the UK.

Candidates will need to undergo an internal BPSS check prior to gaining site access.

Candidates will also need to either be willing and eligible or to undergo a Security Clearance check (SC level) or hold a current SC clearance upon starting their employment with the company. To gain SC clearance you will normally need at least 5 years UK residency.

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, youmustbe: A UK National and eligible to work in the UK Eligible to obtain and maintain a UK GovernmentSC-levelsecurity 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 youre 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. TPBN1_UKTJ

Ringwood

£DOE per annum

Permanent / Full-time and Part Time Considered

About the Role

Our client is looking for an Embedded Software Engineer to join the engineering team. This role focuses on the design, development, and integration of embedded software for advanced machine control systems. You will work closely with multidisciplinary engineering teams and support installation and commissioning activities, ensuring robust, compliant, and high-quality software solutions are delivered on time.

Key Responsibilities as a Embedded Software Engineer:

* Design, develop, and integrate embedded software systems to meet project requirements and timescales

* Develop software for machine control systems and electro-mechanical interfaces

* Create, execute, and document software integration and verification tests

* Provide technical support to internal teams and customers when required

* Ensure software is developed in accordance with internal engineering procedures and relevant regulatory standards

* Manage project tasks and timelines, working across multiple projects simultaneously

Minimum Skills and Experience Required as a Embedded Software Engineer:

* Engineering or science degree, or equivalent qualification and/or relevant industry experience

* Strong experience using engineering design and test verification tools

* Experience developing software for electro-mechanical systems and machine communication protocols, particularly CAN bus

* Proficient in C or C++ (Python knowledge is an advantage)

* Experience with PLC logic programming and testing using CoDeSys, including functional block diagrams and structured text

* Strong problem-solving, reporting, and analytical skills

* Strong communication skills and ability to work effectively both independently and as part of a team

Desirable

* Experience with 12V and 24V off-road machinery

* Knowledge of hydraulic systems

* Experience interfacing software with CAN-based sensors, analogue and digital sensors, and actuators

What They Offer you as a Embedded Software Engineer:

* Opportunity to work on innovative technology

* Supportive and collaborative engineering environment

* Training and development in specialist areas

* Competitive salary and benefits package

Trainee AI Engineer - No Experience Needed! Ready to launch a future-proof career in AI - even if you have zero experience? We’re looking for ambitious individuals ready to break into the world of artificial intelligence and data science. Our industry-leading AI Traineeship is designed to take you from complete beginner to a highly employable Junior AI Engineer, with full training provided and a guaranteed job offer (£25K-£45K starting salary) within 20 miles of your location. Whether you’re working full-time, part-time, or currently unemployed, our flexible, self-paced program allows you to train around your lifestyle and be job-ready in as little as 6-12 months. How it works - your journey to AI success Step 1: Discover AI Start your journey with our beginner-friendly mini-course bundle. Explore the fundamentals of AI through interactive videos, presentations, and quizzes - all accessible anytime, anywhere, through our easy-to-use online platform. Step 2: Full-Stack AI Mastery Dive deeper with in-demand technical skills including Python programming, data handling, machine learning, and version control with Git and GitHub. You’ll work on hands-on mini projects that mirror real-world challenges, helping you build confidence and a strong portfolio as you learn. Step 3: Get Certified Prepare for and earn your Microsoft AI-900: Azure AI Fundamentals certification, an internationally recognised qualification that proves your knowledge and boosts your credibility with employers. Step 4: Real-World Projects Showcase your new skills with two industry-based, practical projects assigned by your personal tutor. These projects are designed to give you real, portfolio-worthy experience, making you stand out to employers from day one. Your guaranteed future After completing your training, you’ll be placed in a Junior AI Engineer role with a guaranteed starting salary of £25K-£45K. We work with top employers across the UK to ensure you get matched with a role close to home. We guarantee a job offer upon completion or 100% of your course fees refunded. We’re proud to have helped over 1,000 people each year transform their careers. Explore our success stories on our website and see what your future could look like. At a one off cost of £990, or a deposit of £149 followed by 10 interest free monthly instalments of £124, this represents a great opportunity to start a rewarding career in Ai and have a real career ladder to start climbing. If you are not offered a role at the end of the training we will refund 100% of your course fees. Ready to future-proof your career? If you’re passionate about tech and ready to break into one of the fastest-growing industries in the world, apply now. One of our friendly advisors will be in touch to guide you through the next steps. ‘Please note that this is a training course and fees apply