Principal Software Engineer

Our client is a growing software and data science consultancy dedicated to delivering high‑quality, end‑to‑end software and data science services across multiple sectors such as defence, energy, transport, and health. Contribute to the development of cutting‑edge solutions in these domains.

The client is seeking Principal C++ Software Engineers with a range of experience levels who are capable of designing, delivering software applications, and leading engineering teams.

As a Principal Software Engineer, you will play a major role in developing code in the Software Modelling and Simulation, autonomy, and geospatial fields, and provide key advice around innovation and new techniques to stakeholders. You will design solutions for complex challenges that meet and exceed user requirements.

• Design, develop and deliver software solutions using a wide range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins, and Synthetic Environments.
• Apply mathematical and computational methods to tackle real‑world problems and develop novel approaches where required.
• Deliver technical consulting projects and products, with the opportunity to lead some of these.
• Build new relationships and maintain current customer relationships.

• At least 15 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.
• Demonstrable skills in stakeholder management, including influencing, negotiating, and conflict management.
• Demonstrable experience and capability in writing proposals and coordinating bid management activity.
• Experience of line management and enabling people to perform.
• Extensive experience with a range of software modelling and simulation techniques.
• Experience in using 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 the 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.
  • We’d love you to bring a strong STEM computing background.
  • Proficient in MS Office, especially Excel, PowerPoint, and Word.

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

Ideally looking for candidates with current SC or DV Security Clearance.