Principal Software Engineer

Job description

Principal Software Engineer - C++ / Unreal | Defence Modelling & Simulation

Leading the next generation of synthetic environments for UK Defence.

This is a high-impact role for a technical authority to join a consultancy founded by industry experts. You will steer the development of complex digital twins and autonomous systems, bridging the gap between mathematical theory and real-world engineering.

The Role

• Technical Authority: Lead the design of UE5 based simulations, Robotic systems, and Digital Twins.
• Strategic Influence: Advise stakeholders on innovation and emerging simulation techniques.
• Team Leadership: Line-manage engineering staff and lead small, agile delivery teams.
• Commercial Drive: Take ownership of bid management and technical proposal authoring.

The Essentials

• Sole British Nationality is required.
• Minimum 7+ years’ experience in Software
• Expert proficiency in C++ and Unreal Engine
• Proven ability to apply mathematical principles to scientific problem-solving.

The Rewards

• + 7% employer pension.
• Private healthcare & health cash plan.
• 25 days holiday + Life Insurance.
• Clear pathway for rapid professional advancement.

Portsmouth (Hybrid - 3 days on-site)

Are you ready to shape the future of defence simulation?

Click apply to find out more.

Extra information

Status

Open

Education Level

Secondary School

Location

Portsmouth

Type of Contract

Full-time jobs

Published at

05-02-2026

Profession type

ICT

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English