Principal Software Engineer (C++ / Unreal Engine)
<p><b>Salary: £70,000 - 85,000 per year</b></p>
<b>Requirements:</b>
<ul><li>Extensive experience, typically 15+ years, delivering high-performance software</li><li>Proven technical leadership at Principal or Technical Lead level</li><li>Strong hands-on expertise in C++ and Unreal Engine</li><li>Background in simulation, autonomy, robotics or game-engine-driven environments</li><li>Experience working with large, complex codebases and performance constraints</li><li>Strong stakeholder management, communication and influencing skills</li></ul>
<b>Responsibilities:</b>
<ul><li>Leading the design and delivery of complex software solutions using C++ and Unreal Engine</li><li>Acting as technical lead across modelling and simulation, wargaming and autonomous systems</li><li>Applying mathematical and computational techniques to solve real-world problems</li><li>Owning key technical decisions across architecture, tooling and performance</li><li>Mentoring engineers and enabling high-performing delivery teams</li><li>Delivering technical consultancy engagements and leading selected projects</li><li>Building trusted relationships with customers and stakeholders</li><li>Supporting bids, proposals and technical reporting</li></ul>
<b>Technologies:</b>
<ul><li>Robotics</li><li>Unreal</li><li>GameDev</li><li>C++</li></ul>
<p><b>More:</b></p>
<p>We are a fast-growing software and data science consultancy delivering end-to-end solutions across defence, energy, transport, and health. Our Principal Software Engineer will work closely with subject matter experts and senior stakeholders on high-impact programmes spanning modelling and simulation, autonomy, geospatial systems, synthetic environments, and digital twins. We offer a competitive salary of up to £85,000, flexible for exceptional technical leaders, along with a comprehensive benefits package including a 7 percent employer pension contribution, Vitality private healthcare, 25 days holiday with the option to buy or sell additional days, life assurance, an EV salary sacrifice scheme, and a discretionary bonus linked to company performance.</p>
<p>last updated 8 week of 2026</p>
<b>Requirements:</b>
<ul><li>Extensive experience, typically 15+ years, delivering high-performance software</li><li>Proven technical leadership at Principal or Technical Lead level</li><li>Strong hands-on expertise in C++ and Unreal Engine</li><li>Background in simulation, autonomy, robotics or game-engine-driven environments</li><li>Experience working with large, complex codebases and performance constraints</li><li>Strong stakeholder management, communication and influencing skills</li></ul>
<b>Responsibilities:</b>
<ul><li>Leading the design and delivery of complex software solutions using C++ and Unreal Engine</li><li>Acting as technical lead across modelling and simulation, wargaming and autonomous systems</li><li>Applying mathematical and computational techniques to solve real-world problems</li><li>Owning key technical decisions across architecture, tooling and performance</li><li>Mentoring engineers and enabling high-performing delivery teams</li><li>Delivering technical consultancy engagements and leading selected projects</li><li>Building trusted relationships with customers and stakeholders</li><li>Supporting bids, proposals and technical reporting</li></ul>
<b>Technologies:</b>
<ul><li>Robotics</li><li>Unreal</li><li>GameDev</li><li>C++</li></ul>
<p><b>More:</b></p>
<p>We are a fast-growing software and data science consultancy delivering end-to-end solutions across defence, energy, transport, and health. Our Principal Software Engineer will work closely with subject matter experts and senior stakeholders on high-impact programmes spanning modelling and simulation, autonomy, geospatial systems, synthetic environments, and digital twins. We offer a competitive salary of up to £85,000, flexible for exceptional technical leaders, along with a comprehensive benefits package including a 7 percent employer pension contribution, Vitality private healthcare, 25 days holiday with the option to buy or sell additional days, life assurance, an EV salary sacrifice scheme, and a discretionary bonus linked to company performance.</p>
<p>last updated 8 week of 2026</p>