> Markdown version of [/jobs/ext/2049700-principal-software-engineer](https://www.wearedevelopers.com/jobs/ext/2049700-principal-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer - **Company:** Raytheon - **Location:** Salford, UK - **Salary:** £50,000.0 - £90,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Unit Testing, Microsoft Azure, Cloud Computing, Relational Databases, DevOps, Elasticsearch, Python (Programming Language), PostgreSQL, OpenShift, Cloud Services, Ansible, Swagger, Next.js, TypeScript, Openapi, ReactJS, Cypress (Programming Language), SC Clearance, Build Management, Containerization, Kubernetes, Restful APIs, Terraform, Mocha, Docker - **Published:** August 14, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5840199731 ## About the Role * Full-stack experience across a selection of JavaScript frameworks (React, NextJS) * Proficiency in TypeScript, Python, and Java REST API development & OpenAPI / Swagger * Experience with cloud services (AWS or Azure) * Knowledge of containerization & orchestration (Docker, Kubernetes, OpenShift) * Familiarity with Infrastructure as Code (Terraform, Ansible) * Proficient in using relational databases (e.g. PostgreSQL) * Understanding of Elasticsearch / Opensearch * Experience with unit testing / automation and use of testing frameworks (e.g. Mocha, Jest, Cypress) ## Description * Design and build software using industry best practices * Collaborate with stakeholders and other engineers * Contribute to the completion of milestones associated with your project * Drive continuous improvement within your team * Collaborate with peers on technical direction within your team Technologies: * API * AWS * OpenSearch * Ansible * Azure * Cloud * Cypress * Docker * ElasticSearch * Support * Java * JavaScript * Jest * Kubernetes * Mocha * NextJS * OpenAPI * OpenShift * PostgreSQL * Python * REST * React * Swagger * Terraform * TypeScript * DevOps, We are Raytheon UK and we offer a full-time, permanent opportunity for a Principal Software Engineer to join our experienced team at our Manchester or Gloucester sites, utilizing a hybrid working pattern. This role provides the opportunity to focus on technical work while also guiding and developing junior team members. As part of a cross-functional team, youll be involved in delivering and deploying critical software across various business areas. We require all candidates to hold SC clearance and be eligible and willing to obtain eDV clearance. We appreciate that you may not be an expert in every required area, and we offer support with training and development! ## Related Videos - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Test Driven Development with JavaScript](https://www.wearedevelopers.com/videos/222-test-driven-development-with-javascript) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)