Senior Software Engineer (C# .NET)

Leonardo UK Ltd; Luton; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Pension scheme

Private healthcare

Flexible working hours

Job summary

Leonardo UK Ltd in Luton is seeking software engineers with strong C# .NET foundations and a passion to learn and grow. You will work in our Integrate Mission Solutions sector, delivering reliable software as part of a collaborative team and developing your technical and leadership capabilities.

The role emphasizes modern development practices, including Agile lifecycles, DevSecOps awareness, and familiarity with WPF/WinForms and Visual Studio.

Qualifications

• 4 years of hands-on software engineering experience in C# .NET.
• Experience with WPF or WinForms and Visual Studio.
• Familiarity with microservices and containerization is a plus.
• Knowledge of DevSecOps, CI/CD and Secure by Design.
• Experience with Agile software development lifecycle.

Responsibilities

• Develop and maintain software in C# .NET within a mature team.
• Collaborate with multi-disciplinary teams to deliver reliable solutions.
• Participate in automated builds, tests and deployments (CI/CD).

Skills

C# .NET

Object-oriented design

WPF

WinForms

Visual Studio

CI/CD

Agile methodologies

Team collaboration

Tools

Visual Studio

Docker

Job description

Job Description: Your Impact We are looking for talented Software Engineers with a solid foundation in C# .NET and a passion for learning and growing. If you are eager to develop your technical skills, leadership capabilities, and decision-making confidence, this role offers an excellent opportunity to advance your career.

What You’ll Bring

Working within our Integrate Mission Solutions sector this role provides an opportunity to work on the latest defence technology within a mature development environment.

• Hands on Experience: Around 4 years of practical experience in software engineering using C# .NET, delivering reliable solutions as part of a team.
• Technical Foundations: A good understanding of object-oriented design and familiarity with frameworks and tools such as WPF, WinForms, and Visual Studio.
• Exposure to microservices and containerisation is a plus.
• DevSecOps Awareness: Interest in automation across build, test, and deployment processes (CI/CD) and an understanding of Secure by Design principles.
• Lifecycle Knowledge: Experience with the software development lifecycle and Agile methodologies.
• Collaboration & Growth Mindset: Ability to work effectively in multi-disciplinary teams, share ideas, and learn from others.
• Continuous Improvement: Enthusiasm for adopting best practices and improving processes.

This is not an exhaustive list, and we are keen to hear from you even if you might not have experience in all the above. The most important skill is a good attitude and willingness to learn.

Security Clearance

This role is subject to pre-employment screening in line with the UK Government’s Baseline Personnel Security Standard (BPSS). An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) may apply, this could include meeting the eligibility requirements for The Security Check (SC) or Developed Vetting (DV). For more information and guidance please visit: https://careers.uk.leonardo.com/gb/en/security-and-vetting

Why join us

At Leonardo, our people are at the heart of everything we do. We offer a comprehensive, company-funded benefits package that supports your wellbeing, career development, and work–life balance. Whether you're looking to grow professionally, care for your health, or plan for the future, we’re here to help you thrive.

• Time to Recharge: Enjoy generous leave with the opportunity to accrue up to 12 additional flexi-days each year.
• Secure your Future: Benefit from our award-winning pension scheme with up to 15% employer contribution.
• Your Wellbeing Matters: Free access to mental health support, financial advice, and employee-led networks championing inclusion and diversity (Enable, Pride, Equalise, Armed Forces, Carers, Wellbeing and Ethnicity).
• Rewarding Performance: All employees at management level and below are eligible for our bonus scheme.
• Never Stop Learning: Free access to 4,000+ online courses via Coursera and LinkedIn Learning.
• Refer a friend: Receive a financial reward through our referral programme.
• Tailored Perks: Spend up to £500 annually on flexible benefits including private healthcare, dental, family cover, tech & lifestyle discounts, gym memberships and more.

Flexible working: Flexible hours with hybrid working options. For part time opportunities, please talk to us about what might be possible for this role.

Leonardo UK operates a grade-based salary framework with broad bands. The salary range shown reflects the approved grade band for this role, or a narrower hiring range published within that band, and is benchmarked against the external market. Exceptions above the standard range are managed through governance controls to protect internal equity.

Leonardo is a global leader in Aerospace, Defence, and Security. Headquartered in Italy, we employ over 53,000 people worldwide including 8,500 across 9 sites in the UK. Our employees are not just part of a team—they are key contributors to shaping innovation, advancing technology, and enhancing global safety.

At Leonardo we are committed to building an inclusive, accessible, and welcoming workplace. We believe that a diverse workforce sparks creativity, drives innovation, and leads to better outcomes for our people and our customers. If you have any accessibility requirements to support you during the recruitment process, just let us know.

Primary Location

Primary Location: GB - Luton - Cap. Green 300 Contract Type: Permanent Hybrid Working: Hybrid International, multicultural, innovative, technological: this is Leonardo. The company’s passionate and talented team is strongly influenced by STEM (Science, Technology, Engineering, Mathematics) expertise, with a diverse range of experience that enables colleagues to share knowledge and know-how across the generations. Leonardo always wants to expand its talent pool, here you can find the right opportunity for you!