Skip to main content
Posted 21 July, 2026

Backend Software Engineer

Copello
Northam, ENG, GB Full Time

Job Description

Backend Software Engineer - National Security **PLEASE NOTE: Applicants MUST already hold DV Clearance to be considered Romsey based Copello are working with a leading technology and engineering company supporting customers across defence and security, delivering systems that operate in the most demanding and sensitive environments. As a Backend Software Engineer, you’ll help deliver mission- critical software to keep the UK safe, secure and prosperous. You’ll work on the feature development and maintenance of critical systems, solving complex, real-world problems Responsibilities * Write clean, secure and maintainable backend code * Translate designs into working software, from concept to production * Contribute to code reviews and shared technical decisions * Design, build, test and document robust backend services * Apply appropriate patterns using proven and emerging technologies Skills and Experience * Python * Linux * Bash scripting * Git * Docker * Messaging or streaming technologies (e.g. Kafka or Apache Pulsar) * Experience working in Agile/Scrum teams * Tooling such as Atlassian or GitLab * Exposure to CI/CD pipelines Clearance This role requires candidates to hold valid DV clearance. If you feel you have the right skills and experience please apply now and we will be in touch for a further conversation