[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Northrop Grumman jobs](https://jobs.opennash.com/companies/northrop-grumman/) · [Search jobs](/search/) Northrop Grumman · United Kingdom-Cheltenham # Principal Software Engineer United Kingdom-Cheltenham Full-time Senior individual contributor Software Engineering Listed on Northrop Grumman’s official careers site. Posted October 9, 2026. Check that it is still open and apply there. [Apply on Northrop Grumman’s careers site →](https://ngc.wd1.myworkdayjobs.com/Northrop_Grumman_External_Site/job/United-Kingdom-Cheltenham/Principal-Software-Engineer_R10222022) [OpenNash Jobs](https://jobs.opennash.com/) / [Northrop Grumman](https://jobs.opennash.com/companies/northrop-grumman/) / Principal Software Engineer ## Job description ### UK CITIZENSHIP REQUIRED FOR THIS POSITION Yes RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: UK-Highest Level of Government Clearance TRAVEL: Yes, 10% of the Time Define Possible at Northrop Grumman UK What’s your possible? At Northrop Grumman UK, you are part of a team driving innovation where it matters most – solving tomorrow’s challenges and shaping the technology solutions of the future. We call it Defining Possible. This mindset goes beyond our customer solutions; it’s the foundation for your career development and the impact we have within the community. The Opportunity This is more than just a job; it’s a mission. As a Principal Software Engineer, you will play a pivotal role in designing, developing, and maintaining the critical infrastructure that powers our services. You will work on a variety of unique and complex projects, delivering core solutions that have real impact. You will bring strong technical leadership, guiding teams through both technical and delivery challenges while shaping solutions that meet customer needs. “My purpose is to lead a team of engineers, rise to the challenges presented, push the boundaries and define possible together.” – Principal Software Manager, Northrop Grumman UK ### What You’ll Do Take ownership of multiple teams’ deliverables and work with technical leads to define a path that meets customer requirements. Represent Northrop Grumman UK as the prime technical contact for your area. Collaborate with senior external partners and customers, often coordinating between organisations. Mentor and guide engineers to support skills development and overall team growth. Contribute to high‑quality technical design, development, and delivery planning. ### What We’re Looking For Experience as a Software Engineer with strong capability in one or more of the following: Backend development (Java Spring Boot, Maven, Python) Frontend development (JavaScript/TypeScript, React, npm) Proven experience designing, developing, and deploying scalable backend systems. Familiarity with DevOps, CI/CD and containerisation technologies (Jenkins, Kubernetes, Docker, AWS). Strong communication, collaboration, and problem‑solving skills, ideally within an agile environment. If you don’t meet every requirement, we still encourage you to apply. Talent, mindset, and potential matter to us. Security Clearance Due to the nature of our work, you must be British National for this clearance type. You must currently hold the Highest Level of UK Government security clearance. Our recruitment team is on hand to support you and guide you through the process: talentenquiries@uk.ngc.com Benefits Flexible working options, including an optional compressed fortnight Private healthcare Cash health plan Holiday buy/sell scheme Career development programmes and ongoing specialist training Performance‑based bonuses A range of wellbeing, financial, and lifestyle benefits Why Join Us? A Mission to Believe In Every day, we contribute to building a more secure and connected world across land, sea, air, space, and cyberspace. The work we do together matters. A Place to Belong and Thrive Every voice matters. We are proud of our inclusive community and our partnerships with organisations championing diversity, mental health, and veteran careers. You can bring your authentic self to work and thrive here. Your Career, Your Way Shape your career with diverse opportunities, mentoring, training programmes, and the flexibility to balance work and life. Your professional growth and wellbeing are at the heart of our culture. Ready to Apply? Yes - Submit your application online. Possibly ### Contact our team to learn more - talentenquiries@uk.ngc.com No - Explore other opportunities with us. We’re growing across the UK. #SOFT-ENG-DEVOPS Northrop Grumman is committed to hiring and retaining a diverse workforce, and encourages individuals from all backgrounds and all abilities to apply and consider becoming a part of our diverse and inclusive workforce. ## At a glance - Posted by the employer: Oct 9, 2026 - First seen by OpenNash: Jul 10, 2026 - Last checked: Oct 18, 2026 - Listed for: 100 days - Location: United Kingdom-Cheltenham - Employment type: Full-time[Apply on Northrop Grumman’s careers site →](https://ngc.wd1.myworkdayjobs.com/Northrop_Grumman_External_Site/job/United-Kingdom-Cheltenham/Principal-Software-Engineer_R10222022) ## More jobs at Northrop Grumman ### [Evergreen-Cyber and Intelligence Software Engineering Graduate](https://jobs.opennash.com/companies/northrop-grumman/jobs/65f050eb230bfbfeb59d/) United Kingdom-Cheltenham ### [Graduate Software Engineer](https://jobs.opennash.com/companies/northrop-grumman/jobs/e9dfa523da06d8b3dfe1/) United Kingdom-Cheltenham ### [Industrial Placement - Software Engineer](https://jobs.opennash.com/companies/northrop-grumman/jobs/536773cfe53b8d3ad1cb/) United Kingdom-Cheltenham ### [Lead Software Engineer](https://jobs.opennash.com/companies/northrop-grumman/jobs/0e0a0c8a6403e417a30e/) United Kingdom-Cheltenham ### [Senior Software Engineer](https://jobs.opennash.com/companies/northrop-grumman/jobs/9c2e82ad7ae2b5021b10/) United Kingdom-Cheltenham ## Similar jobs at other companies ### [Principal Software Engineer](https://jobs.opennash.com/companies/capgemini/jobs/68b70570e80731f1f389/) Capgemini · Utrecht ### [Principal Software Engineer](https://jobs.opennash.com/companies/microsoft/jobs/3adc27485dc247795775/) Microsoft · India, Karnataka, Bangalore ### [Principal Software Engineer](https://jobs.opennash.com/companies/siemens/jobs/2a24e793e5b430b7f63d/) Siemens OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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