Raytheon UK
Principal Software Engineer
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Principal Software Engineer
Principal Software Engineer
Location: Manchester, Lancashire Role Type: Onsite rability: Eligible for SC clearance and willing to obtain eDV clearance
Raytheon UK has a full-time, permanent opportunity for a Principal Software Engineer to join their team at the Manchester or Gloucester sites, with a hybrid working pattern.
About the Role
As a Principal Software Engineer, you'll have the opportunity to specialise in technical work or combine technical focus with mentoring and guiding junior team members. You'll be part of an established software development team, collaborating across disciplines to design, deliver, and deploy critical software for diverse business needs.
Responsibilities
- Design and build software using industry best practices
- Collaborate with stakeholders and engineers to drive solutions
- Contribute to project milestones in a cross-functional environment
- Support continuous enhancement of team processes and technologies
- Provide technical leadership and guidance to peers
Required Skills and Experience
- Full-stack expertise across:
- JavaScript frameworks (React, NextJS)
- TypeScript, Python, Java
- REST API development with proficiency in OpenAPI/Swagger
- Cloud services (AWS or Azure)
- Containerisation & orchestration (Docker, Kubernetes, OpenShift)
- Infrastructure as Code (Terraform, Ansible)
- Relational databases (e.g., PostgreSQL)
- Search platforms (Elasticsearch, OpenSearch)
- Unit testing and automation (test frameworks: Mocha, Jest, Cypress)
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Benefits & Work Culture
Benefits Package
- Contributory pension scheme (up to 10.5% company contribution)
- "Life Assurance" equating to 6 times your annual salary
- Building holiday entitlement: 25 days (with service guarantees) + statutory holidays + optional holiday purchase (accretive/decreto)
- Company bonus scheme (discretionary performance awards)
- Comprehensive private medical insurance
- Flexible rewards scheme with salary sacrifice options:
- Health Cashplan
- Dental care
- Cycle to Work scheme
- Enhanced sick pay
- Progressive family-friendly policies including extended:
- Maternity leave
- Paternity leave
- Shared parental leave
Work Culture
- 37-hour working week
- Early finish: 1:30 PM on Fridays
- Volunteer time off: Up to 5 paid days per year for charitable activities
- Core values (rumoured 'output-focused') with structured flexible-working arrangements possible upon request (rarely assessable per role)
Contact your Talent Acquisition team if you have specific flexible-working needs.
About Raytheon UK
Specialising in DevSecOps at scale, AI/ML, cybersecurity, and geospatial intelligence, we deliver secure, mission-critical systems for defence, intelligence, and cyber sectors using advanced technologies.
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At Raytheon UK, we pioneer defence and aerospace innovation while fostering talent growth. This role offers:
- A mission-driven environment shaping national security priorities
- A high-trust, inclusive culture
- Tailored professional development and career advancement opportunities
organisational Vision
Raytheon UK is part of the RTX Corporation (previously United Technologies), a market-added industrial group managing over 180,000 employees globally, driving progress in aviation, aerospace, and defence trades.
Renowned as leaders within collaborative defence/technology ecosystems, we champion excellence with 20,000 UK jobs across 13 centres. Each year, past years' contributions generate over £2.7 billion in economic value—funded to innovation, skill development, and diverse partnerships. Interactions with 4,000 supplier suppliers extend across 13 UK regions: England, Scotland, Wales, Northern Ireland.
We embrace diversity and equal opportunity, ensuring fair access to career growth for all irrespective of protected characteristics.
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