Principal Software Engineer

hackajob is partnering directly with Raytheon UK to hire for this role.

Date Posted:

2026-08-11

Country:

United Kingdom

Location:

Gloucester, South Gloucestershire

Position Role Type:

Onsite

Principal Software Engineer

Gloucester / Manchester

Onsite

Due to the interesting work we do and the sector this team is working in, we require all candidates to

currently

hold eDV clearance.

About us

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.

As a leading defence and aerospace companyoperatingacross the United Kingdom, Raytheon UK helps to solve our customers toughest challenges. We are a major supplier to the UK government and customers around the globe, providing defence solutions across all domains: land, sea, air, space, and cyberspace. We also provide digital and training transformation solutions to commercial and military customers.

With circa 2000 employees and major facilitiesoperatingthroughout the UK including Broughton (Wales), Livingston and Glenrothes (Scotland), and Harlow, Gloucester, and Manchester (England); we are committed to investing in British careers and technology development.

Cyber

Our National Security Cyber business delivers mission-critical solutions that safeguard our national security 24 hours a day, seven days a week. Working in a mature, agile environment, our SCRUM teams work synchronously with our customers to solve some of the toughest digital challenges faced in the world today.

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

Desired Skills and Experience:

Core Software Engineering across a variety of languages, e.g. 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 and automation

Testing frameworks (e.g. Mocha, Jest, Cypress)

Experience working in an Agile delivery team

Use of code repositories (e.g. GitLab); familiarity with branching strategies, pull requests and merge processes

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 (37hr)

Company bonus scheme (discretionary)

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, although hours may vary depending on role, job requirement or site-specific arrangements.

Early 1.30pm finish Friday, start your weekend early!

Remote, hybrid and site based working opportunities, dependant on your needs and the requirements of the role.

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.

This position is classified as:

Onsite: Employees who are working in Onsite roles will work primarily onsite.

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

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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.

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