Principal Software Engineer

Date Posted: 2026-03-17 Country: United Kingdom Location: Manchester, Lancashire Position 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 will be 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.ResponsibilitiesDesign and build software using industry best practiceCollaborate with stakeholders and other engineersContribute to the completion of milestones associated with your projectContribute to continuous improvement within your teamCollaborate with your peers on technical direction within your teamRequired Skills and ExperienceFull‑stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development & OpenAPI / SwaggerCloud services (AWS or Azure)Containerisation & Orchestration (Docker, Kubernetes, OpenShift)Infrastructure as Code (Terraform, Ansible)Relational Databases (e.g. PostgreSQL)Elasticsearch / OpensearchUnit testing / automation and use of testing frameworks (e.g. Mocha, Jest, Cypress)Benefits & Work CultureBenefits:Contributory Pension Scheme (up to 10.5% company contribution)6 times salary ‘Life Assurance’ with pension25 days holiday (increasing with service) + statutory public holidays, plus opportunity to buy and sell up to 5 daysCompany bonus scheme (discretionary)Private Medical InsuranceFlexible Benefits scheme with extensive salary sacrifice schemes, including Health Cashplan, Dental, and Cycle to Work amongst othersEnhanced sick payEnhanced family friendly policies including enhanced maternity, paternity & shared parental leaveWork Culture:37hr working weekEarly 1.30pm finish Friday, start your weekend early!Up to 5 paid days volunteering each yearFlexible 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.Equal Employment OpportunityRTX 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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