Software Engineer

Sirius Digital; Portsmouth; On-site; GBP 40,000 - 60,000; Full time

Job summary

A technology consultancy company in Portsmouth is looking for a Software Engineer with solid technical skills and strong problem-solving ability. The role involves delivering software solutions in areas like simulation and autonomous systems. Candidates should hold a degree in a relevant discipline and be proficient in C/C++, with a collaborative mindset and willingness to learn. The position promotes career growth and includes a competitive benefits package.

Benefits

7% pension contribution

Private healthcare

Life assurance

Electric vehicle scheme

Holiday purchase options

Qualifications

• Experience in a technical consultancy environment required.
• Confidence in working with large codebases and hardware constraints.
• Willingness to learn new technologies.

Responsibilities

• Deliver technical consultancy projects to high standards.
• Develop software solutions for wargaming, simulation, autonomy.
• Build strong client relationships.

Skills

C/C++ proficiency

Problem-solving skills

Strong communication skills

Experience with software modelling and simulation techniques

Knowledge of videogame engine technology

Familiarity with Python, C#, Zig

Interpersonal skills

Ability to apply mathematical/statistical methods

Education

Degree in STEM or computing discipline

Tools

MS Office (Excel, PowerPoint, Word)

Job description

Overview

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.

Role

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 We’re 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
• 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.