Software Engineer – National Security Join a growing, highly trusted supplier within the National Security domain, where your work directly strengthens the UK’s ability to stay safe, resilient, and ahead of emerging threats. At Roke, we’re a leading technology and engineering company supporting customers across National Security, Defence, and Intelligence. Our teams tackle some of the country’s most complex technical challenges - and as a Software Engineer, you’ll be at the heart of solving them. Learn more about us: https://www.roke.co.uk/ Role Overview As a Software Engineer at Roke, you won’t just write code - you’ll create technology that protects people, platforms, missions, and information in realworld operational environments. The tools and systems you develop will be used by customers who depend on absolute reliability and security every day. Your work will actively shape how the UK counters evolving threats, ensuring our national security capabilities remain robust, modern, and missionready. What You’ll Be Doing Building an IP Security conformance test suite and reference implementation that underpins nationallevel Cryptography programmes. Creating highquality, openbydefault software designed for longterm reuse across teams, programmes, and partners. Applying a testdriven engineering approach to deliver software that meets the highest assurance standards. Producing clear, dependable documentation, helping others implement and build on your work effectively. Required Skills Python Test development experience Nice to Have Experience with IPSec Familiarity with Wireshark If this role doesn’t quite match what you’re looking for, explore more opportunities on our careers page: https://www.roke.co.uk/careers/ Benefits 30 days holiday plus bank holidays (with buy/sell options) Private medical insurance Health, wellness, and family support Bonus scheme Chemring ShareSave scheme EV Salary Sacrifice schemee Discounts and cashback offers Free minibus between Romsey station and the office Clearance Requirements You must be eligible for DV clearance due to the sensitivity of our work. Location – Romsey Based in the Hampshire countryside near the New Forest, our Romsey site offers a unique blend of innovation and tranquillity - with ample parking, an onsite gym, and a scenic manor house setting. Next Steps Click Apply. Your work here will make a real world difference.