Date Posted:
2026-06-24Country:
United KingdomLocation:
Manchester, LancashirePosition Role Type:
OnsiteRaytheon 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.
#LI-AS3
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