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+
Addition is an exceptional employer that fosters a dynamic work culture in the heart of London, where innovation meets collaboration. With a strong emphasis on professional development, employees are encouraged to grow their skills and advance their careers while enjoying competitive salaries and flexible working arrangements. Joining Addition means being part of a forward-thinking team dedicated to making a meaningful impact in the cyber security landscape.
