Sirius Digital Services
Senior Software Engineer

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Senior Software Engineer
Senior Software Engineer
Salary: Negotiable plus benefits, pension (7% contribution), 25 days holiday & life insurance
About the Consultancy
We are a small but rapidly growing consultancy owned by four highly experienced and recognised practitioners in the UK defence consultancy sector. We are seeking candidates with a strong blend of technical expertise and interpersonal skills, capable of working both independently and within small teams.
The Role
As a Senior Software Engineer, you will take a leading role in developing software solutions across Software Modelling, Simulation, Autonomy, and Geospatial domains. Your role will involve providing technical direction on innovation, delivering cutting-edge solutions, and guiding stakeholders through complex challenges.
Responsibilities
- Design, develop, and deliver software solutions using a wide range of techniques, including:
- Wargames
- Modelling & Simulation
- Robotic & Autonomous Systems
- Digital Twins & Synthetic Environments
- Apply mathematical and computational methods to solve real-world problems, leveraging tools and techniques while innovating where necessary.
- Lead and deliver technical consulting projects and products.
- Build new customer relationships and maintain existing ones.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Expertise Required
Essential
At least 5 years’ experience designing and delivering software applications.
About You
We are looking for candidates who can:
- Contribute to the company’s growth while upskilling themselves and their team.
- Deliver competitive remuneration and opportunities for rapid career advancement.
The ideal candidate must demonstrate the following attributes:
- 5+ years’ experience in designing and implementing performant software applications.
- Ability to apply scientific or advanced statistical techniques to solve technical challenges.
- Proficient in C/C++ and Python.
- Familiarity with:
- Software Modelling & Simulation techniques
- Capabilities-based design
- Autonomy & Robotics
- Entity or Event-based Simulation
- Videogame engine technology (e.g., Unreal Engine, Godot)
- Expertise in performance and hardware constraints.
- Ability to analyse use cases and project data while defining requirements.
- Strong customer and stakeholder relationship management.
- Willingness to travel across the UK and work at client sites for extended periods.
- Experience in authoring technical reports and presenting at high-level stakeholder engagements.


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Desirable
- Experience with UK Defence stakeholders, including:
- Defence Digital
- DE&S (Defence Equipment & Support)
- Dstl (Defence Science and Technology Laboratory)
- Frontline Commands
- A degree-level education (or equivalent relevant experience).
- Strong STEM/computing background.
- Familiarity with MS Office tools, particularly Excel, PowerPoint, and Word.
Security Compliance
Candidates must meet the following requirements:
- Right to live and work in the UK.
- Willingness to undergo an internal BPSS (Basic Post Clearance Checking Service) check before gaining site access.
- Holding (or being eligible to obtain) a current SC (Security Clearance).
- Note: To qualify, you typically need at least 5 years of UK residency.
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