Date Posted:
2026-08-13Country:
United KingdomLocation:
Gloucester, South GloucestershirePosition Role Type:
OnsitePrincipal Software Engineer
Location: Gloucester or Manchester
Permanent
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 company operating across 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 facilities operating throughout 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.
Role & 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 experience
Core Software Engineering such as: JavaScript frameworks (React, NextJS), TypeScript, Python or 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
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:
£: Competitive salary
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.
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.
#LI-KP1
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.
Privacy Policy and Terms:
Click on this link to read the Policy and Terms
Who We Are
At RTX, we're a diverse team of explorers united in our goal to push the boundaries of known science – and solve the world's most complex problems. We design. We engineer. We code. We research. We patent. We test. We learn. We iterate. We manufacture. We produce. We are advancing aviation, building smarter defense systems and creating innovations to take us deeper into space. Progress is not inevitable. It is initiated – by tirelessly asking the hard questions and finding answers. Progress defines the future and defines us – because the progress we make matters.
Diversity
RTX solves some of the toughest challenges in aerospace and defense. That requires expansive thinking and bold innovation – and that, in turn, requires a culture that is diverse, equitable and inclusive.
We embrace individuality and diversity of thought to fuel opportunity for our employees, our customers and our communities. We work toward progress, knowing that a more inclusive world is critical to our mission. Not just in this moment, but always.
To build a diverse and harmonious team, we are guided by key pillars of action that we are committed to achieving. These include:
Workforce Diversity: We are connected to communities around the world. Being a good neighbor means investing our resources to help everyone thrive. Additionally, we have found that providing employees with opportunities to volunteer helps promote leadership development and reduces attrition.
Community Engagement: We are connected to communities around the world. Being a good neighbor means investing our resources to help everyone thrive. Additionally, we have found that providing employees with opportunities to volunteer helps promote leadership development and reduces attrition.
Supplier Diversity: We support local economic growth by creating high value jobs through our operations and helping our suppliers do the same. This includes small and diverse businesses, which are often the economic growth engine of communities.
Public Policy: We advocate for issues that matter to our company and stakeholders, and we use our company's size and scale to advance equity in education, encourage social justice reform and elevate economic policies that support equality.
Commitment to Military
At RTX, we know and value the strategic and tactical talents that only veterans and military spouses can offer. We are dedicated to hiring US Military Veterans and their spouses – whether you’re a veteran, a reserve member, military spouse or transitioning from active duty to a civilian career. Our military veterans work across all disciplines. They lead our business, engineer our products and manage our supply chain.
As part of a tight-knit team that values your determination and resourcefulness, you'll do work that has an enormous impact on customers across the globe. We offer an array of programs to help you transition to your civilian career, connect with colleagues and give back to your community. The skills you developed during your military career have served you well – and they're just as valuable now. If you're ready to help us create trusted, innovative solutions for a safer, more connected world, join our talent community and an RTX representative will contact you if they have a matching job opportunity. This is the moment your next mission begins. To assist you in joining our team, we have developed a hiring guide specifically for veterans and military spouses.
Our benefits are uniquely designed to support veterans and military spouses. They encompass health and wellness plans, retirement savings, income and asset protection, work-life balance with flexible arrangements and paid time off (PTO), relocation assistance, and tuition support.
Internships and Leadership Development Programs
Our internship and co-op programs provide an experiential learning opportunity as you work on complex challenges and projects. Bonus: Many positions offer the potential opportunity to convert to full-time employment upon graduation.
Our Leadership Development Program (LDP) provides an exceptional foundation for you to forge valuable relationships and gain multiple pathways to leadership. As a future leader, you'll play a vital role in helping RTX redefine aerospace and defense. Participants can apply to one of multiple functional disciplines listed below:
- Global Communications
- Contracts
- Digital
- Engineering
- Finance
- Human Resources
- Operations and Supply Chain