C++ Engineer

Salary: £43,000 - 72,000 per year

Requirements:

• Strong experience developing software using modern C++.
• Experience working within a Linux environment.
• Solid understanding of software engineering principles, design and development practices.
• Ability to solve complex technical problems and deliver robust, maintainable code.
• Proactive approach to learning, collaboration and continuous improvement.
• Confidence contributing to technical discussions and influencing engineering decisions.
• Active DV clearance or recently active DV clearance.

Responsibilities:

• Design, develop and maintain high-performance software.
• Contribute to scalable, reliable and supportable systems.
• Help drive technical solutions and tackle challenging engineering problems.
• Support the development of colleagues.
• Challenge existing approaches, explore new technologies and contribute to software development where performance and efficiency are critical, including ultra-low-latency applications.

Technologies:

• Support
• Linux
• Security
• C++

More:

Were seeking Senior C++ Engineers to join our growing, collaborative, engineer-led team delivering challenging projects across the UK National Security and Defence sector. Based in Cheltenham, the role offers a salary of £70,000–£90,000 and the opportunity to work on complex software and digital infrastructure challenges supporting national security. Our team values engineering excellence, continuous learning, knowledge-sharing and technical problem-solving, and we encourage engineers to shape architecture, influence decisions and introduce new ideas. We dedicate 10% of working time to training and professional development and offer a 37.5-hour working week in a supportive environment.

last updated 43 week of 2026