Principal Software Engineer

Raytheon UK; Manchester; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Contributory Pension Scheme (up to 10.

Life Assurance (6x salary)

15-25 holidays

Company bonus scheme

Private Medical Insurance

Flexible Benefits

Enhanced sick pay

Enhanced family policies

Job summary

Raytheon UK is seeking a Principal Software Engineer to join our team on Manchester or Gloucester sites within a hybrid pattern. You will lead technical work or balance with people management, guiding junior engineers in a cross-functional environment, delivering critical software for defence and cyber domains.

Applicants must hold SC clearance and be eligible for eDV clearance. You will collaborate with stakeholders, design and implement end-to-end software, and contribute to continuous

Qualifications

• Full-stack experience across modern JS frameworks and Python/Java.
• REST API development using OpenAPI/Swagger.
• Cloud services (AWS or Azure) and container orchestration.
• IaC with Terraform/Ansible and relational databases.
• Elasticsearch/OpenSearch and testing frameworks.

Responsibilities

• Design and build software using industry best practices.
• Collaborate with stakeholders and engineers across teams.
• Contribute to milestones and continuous improvement.
• Guide junior engineers and help define technical direction.

Skills

Full-stack experience

JavaScript

React

NextJS

TypeScript

Python

Java

REST API

OpenAPI/Swagger

Cloud

AWS/Azure

Docker

Kubernetes

OpenShift

Terraform

Ansible

PostgreSQL

Elasticsearch/OpenSearch

Testing (Mocha/Jest/Cypress)

Tools

Docker

Kubernetes

OpenShift

Terraform

Ansible

PostgreSQL

Elasticsearch/OpenSearch

OpenAPI/Swagger

Job description

Date Posted:
2026-06-24
Country:
United Kingdom
Location:
Manchester, Lancashire
Position Role Type:
Onsite

Raytheon UK have a full time, permanent opportunity for a Principal Software Engineer to join our team on our Manchester or Gloucester sites within a hybrid working pattern. As Principal Software Engineer, you have the opportunity to focus on technical work or have a mixture of technical focus and people management focus - guiding and developing our more junior members of the team. Either way, you'll be a part of our experienced software dev function, working in a cross-functional team, delivering and deploying critical software across a variety of business areas. Due to the interesting work we do and the sector this team is working in, we require all candidates to hold SC and be eligible & willing to obtain eDV clearance.

Responsibilities

• Design and build software using industry best practice
• Collaborate with stakeholders and other engineers
• Contribute to the completion of milestones associated with your project
• Contribute to continuous improvement within your team
• Collaborate with your peers on technical direction within your team
  

Required Skills And Experience

• Full-stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java
• REST API development & OpenAPI / Swagger
• Cloud services (AWS or Azure)
• Containerisation & Orchestration (Docker, Kubernetes, OpenShift)
• Infrastructure as Code (Terraform, Ansible)
• Relational Databases (e.g. PostgreSQL)
• Elasticsearch / Opensearch
• Unit testing / automation and use of testing frameworks (e.g. Mocha, Jest, Cypress)

We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application.

Benefits & Work Culture

Benefits:

• Contributory Pension Scheme (up to 10.5% company contribution)
• 6 times salary ‘Life Assurance’ with pension
• 25 days holiday (increasing with service) + statutory public holidays, plus opportunity to buy and sell up to 5 days
• Company bonus scheme (discretionary)
• Private Medical Insurance
• Flexible Benefits scheme with extensive salary sacrifice schemes, including Health Cashplan, Dental, and Cycle to Work amongst others
• Enhanced sick pay
• Enhanced family friendly policies including enhanced maternity, paternity & shared parental leave

Work Culture:

• 37hr working week
• Early 1.30pm finish Friday, start your weekend early!
• Up to 5 paid days volunteering each year.
• Flexible working culture focused on output, with more formal flexible working arrangements on request (assessed subject to role) - please highlight any requests to the Talent Acquisition team.

About Us

In this area of Raytheon UK, we provide DevSecOps at scale, Artificial Intelligence, Machine Learning, cyber and geospatial intelligence capabilities to support the defence, intelligence and cyber sectors. Collaborating with customers and suppliers to deliver secure, mission critical systems using the latest technologies and innovations.

At Raytheon UK, we take immense pride in being a leader in defence and aerospace technology. As an employer, we are dedicated to fuelling innovation, nurturing talent, and fostering a culture of excellence.

Joining our team means being part of an organisation that shapes the future of national security whilst investing in your growth and personal development. We provide a collaborative environment, abundant opportunities for professional development, and a profound sense of purpose in what we do. Together, we are not just advancing technology; we're building a community committed to safeguarding a safer and more connected world.

RTX

Raytheon UK is a landed company and part of the wider RTX organisation. Headquartered in Arlington, Virginia, USA, but with over 180,000 employees globally across every continent, RTX provides advanced systems and services for commercial, military and government customers worldwide and comprises three industry-leading businesses – Collins Aerospace Systems, Pratt & Whitney, and Raytheon.

Supporting over 35,000 jobs across 13 UK sites, RTX is helping to drive prosperity. Each year our work contributes over £2.7bn to the UK economy and offers a wealth of opportunities to 4,000 suppliers across England, Scotland, Wales and Northern Ireland. We’re investing in all corners of the country, supporting 29,040 jobs in England, 3,040 in Northern Ireland, 1,900 in Scotland and 1,600 in Wales.

RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.