Principal Software Engineer - Gloucester

Salary: £95,000 - 95,000 per year

Requirements:

• We require candidates to be willing and eligible to hold SC and eDV clearance.
• We are looking for experience in core software engineering.
• Experience with JavaScript frameworks such as React and NextJS, TypeScript, Python, or Java.
• Experience with REST API development, OpenAPI, or Swagger.
• Experience with cloud services such as AWS or Azure.
• Experience with containerisation and orchestration tools such as Docker, Kubernetes, or OpenShift.
• Experience with Infrastructure as Code tools such as Terraform or Ansible.
• Experience with relational databases such as PostgreSQL.
• Experience with Elasticsearch or OpenSearch.
• Experience with unit testing and automation, including frameworks such as Mocha, Jest, or Cypress.
• Experience working in an Agile delivery team.

Responsibilities:

• We design and build software using industry best practice.
• We collaborate with stakeholders and other engineers.
• We contribute to the completion of milestones associated with our projects.
• We contribute to continuous improvement within our team.
• We collaborate with our peers on technical direction within our team.

Technologies:

• API
• AWS
• OpenSearch
• Ansible
• Azure
• Cloud
• Cypress
• Docker
• ElasticSearch
• Java
• JavaScript
• Jest
• Kubernetes
• Mocha
• NextJS
• OpenAPI
• OpenShift
• PostgreSQL
• Python
• REST
• React
• Security
• Swagger
• Terraform
• TypeScript
• DevOps
• Support

More:

We are Raytheon UK, and we take pride in being a leader in defence and aerospace technology. We operate across the United Kingdom, supporting customers across land, sea, air, space, and cyberspace, and delivering digital and training transformation solutions to commercial and military customers. Our National Security Cyber business delivers mission-critical solutions that safeguard national security 24 hours a day, seven days a week. This role is based in Gloucester on a permanent onsite/hybrid basis, with a minimum of three days a week on site. We offer a competitive salary, contributory pension scheme with up to 10.5% company contribution, life assurance, 25 days holiday plus public holidays, bonus scheme, flexible benefits, enhanced sick pay, enhanced family-friendly policies, a 37-hour working week, early 1.30pm Friday finish, remote/hybrid/site working opportunities depending on role needs, and up to five paid volunteering days each year.

last updated 35 week of 2026