Principal Software Engineer

1120 NG UK Limited.; City of Westminster; On-site; GBP 80,200 - 120,400; Full time

Benefits offered by this job

Flexible working options

Private healthcare Cash health plan

Holiday buy/sell scheme

Career development programmes

Performance-based bonuses

Wellbeing and financial benefits

Job summary

1120 NG UK Limited. is seeking a Principal Software Engineer to lead technical projects and mentor teams in City of Westminster. The ideal candidate should demonstrate expertise in backend development and familiarity with DevOps practices.

Competitive salary ranges from £80,200 to £120,400. The role offers flexible working, private healthcare, and a supportive environment encouraging applications from diverse backgrounds.

Qualifications

• Experience as a Software Engineer with capability in backend/front-end technologies.
• Proven experience designing and deploying scalable backend systems.
• Strong communication and problem-solving ability in an agile environment.

Responsibilities

• Take ownership of multiple teams’ deliverables and coordinate technical paths.
• Mentor and guide engineers to support skills development.
• Contribute to high-quality technical design and delivery planning.

Skills

Backend development (Java Spring Boot, Maven, Python)

Frontend development (JavaScript/TypeScript, React)

DevOps, CI/CD and containerisation technologies (Jenkins, Kubernetes, Docker, AWS)

Strong communication skills

Collaboration and problem-solving skills

Job description

Principal Software Engineer

UK citizenship is required. Relocation assistance may be available. Travel: Yes (10% of the time). Salary: £80,200 - £120,400.

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.

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.

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

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.