At a Glance
- Tasks: Design and develop secure software solutions for mission-critical environments.
- Company: Specialist tech business focused on defence technology and digital innovation.
- Benefits: Competitive salary, hybrid working, private medical insurance, and 25 days annual leave.
- Other info: Join a growing organisation with exciting career opportunities and ongoing training.
- Why this job: Make a real impact with cutting-edge technology in a collaborative culture.
- Qualifications: Experience in software engineering and strong knowledge of backend development.
The predicted salary is between 60000 - 80000 £ per year.
Join a specialist technology business delivering secure digital solutions for organisations operating in highly complex and mission-critical environments. This is an opportunity to work on meaningful projects, solve challenging technical problems, and help build technology that supports real-world decision-making where reliability and security are paramount.
Role Overview
- Package: Competitive salary + bonus + comprehensive benefits package
- Industry: Defence Technology / National Security / Digital Innovation
What You’ll Be Doing
- Designing, developing and maintaining modern software applications across secure environments
- Collaborating with engineers, architects and delivery teams to create scalable, high-quality solutions
- Developing robust backend services and APIs using a range of programming languages
- Working with containerisation technologies to support efficient deployment and consistent environments
- Contributing to CI/CD pipelines and automation to improve software delivery processes
- Applying software engineering best practices to produce clean, maintainable and well-documented code
- Participating in code reviews and technical discussions to drive continuous improvement
- Supporting technology selection decisions by evaluating tools, frameworks and development approaches
- Keeping up to date with emerging technologies and applying innovative thinking to technical challenges
Main Skills Needed
- Commercial experience in software engineering or a strong academic background in Computer Science, Engineering or a related discipline
- Strong knowledge of Git and collaborative software development practices
- Backend development experience using technologies such as Java, Python or Go
- Solid understanding of software engineering principles, algorithms and data structures
- Experience working with Docker and container-based development environments
- Knowledge of DevOps practices including CI/CD pipelines and automated testing
- Understanding of cloud platforms such as AWS and/or Azure
- Exposure to Kubernetes or other container orchestration technologies
- Familiarity with Agile delivery environments and DevSecOps principles
- Knowledge of web application security best practices
- Strong communication skills and the ability to collaborate effectively across technical teams
- Curious mindset with a willingness to learn new technologies and solve complex problems
- Exposure to Rust would be advantageous
What’s in It for You
- Hybrid working model with flexibility built in
- Opportunity to work on technology with genuine operational impact
- Exposure to complex, cutting-edge engineering challenges
- Collaborative culture focused on innovation, quality and continuous improvement
- Professional development and ongoing training support
- Private medical insurance
- Life assurance cover
- 25 days annual leave plus bank holidays
- Access to on-site facilities including gym, café, restaurant and breakout spaces
- Join a growing organisation with ambitious plans and long‑term career opportunities
Please note: Due to the nature of the work, candidates must be eligible to obtain UK Security Clearance.
Curious? Apply now — or grab five minutes with us to hear more.
Software Engineer in Cheltenham employer: Addition+
As a leading specialist in defence technology, we pride ourselves on being an excellent employer that offers a collaborative culture focused on innovation and continuous improvement. Our hybrid working model provides flexibility, while our commitment to professional development ensures that employees have ample opportunities for growth and advancement. With competitive salaries, comprehensive benefits, and the chance to work on impactful projects in secure environments, we are dedicated to supporting our team members in achieving meaningful and rewarding careers.
