Senior Software Developer

Location: UK Mobile Worker with travel to Leidos offices as required

Salary Range: £61,500 - £78,800

Are you ready for your next career challenge?

Enterprise Supply Chain Services (ESCS) is the part of solution responsible for sourcing and procurement, inventory, planning and order management. 

Role overview 

As a Software Developer, you will design, build, test and maintain software components and integrations that support ESCS capability delivery.

You will work as part of a multidisciplinary agile team, following agreed architecture, engineering, security and quality standards. We welcome different perspectives and encourage collaborative problem-solving.

What will I be doing?

• Turn agreed stories and designs into working, supportable software. 

• Collaborate with colleagues across analysis, architecture, testing, data and infrastructure. 

• Contribute to a healthy engineering culture through review, documentation and continuous improvement. 

Key responsibilities:

• Develop and maintain applications, APIs, integrations and supporting components. 

• Write clean, secure and testable code using agreed patterns and standards. 

• Create and maintain unit tests and contribute to integration test automation. 

• Participate in code reviews, design discussions, estimation and backlog refinement. 

• Use Git-based workflows and CI/CD pipelines to build and deploy changes. 

• Investigate defects and support root-cause analysis. 

• Maintain technical documentation and contribute to operational readiness. 

• Continuously improve knowledge of the platform, domain and engineering toolchain. 

Essential skills and capabilities

• Software development in one or more relevant languages 

• API development and integration fundamentals 

• SQL and data access fundamentals 

• Secure coding practices 

• Unit testing and debugging 

• Git and collaborative code review 

• CI/CD awareness 

• Agile delivery and user story implementation 

• Code quality tooling and documentation 

• Problem solving and clear communication 

Essential experience

• Practical experience developing and testing software in a team environment. 

• Experience using source control and structured development practices. 

• Experience delivering against defined requirements or user stories. 

We recognise that skills and experience can be gained in different ways. If you meet most of the essential criteria and are interested in the role, we encourage you to apply.

It would be great if you had experience in the following:

• Azure or AWS services. 

• Enterprise integrations or SaaS platforms. 

• Infrastructure as Code and automated deployment awareness. 

• Containers, messaging or event-driven systems. 

Success in the role 

• Changes meet acceptance criteria and engineering standards. 

• Code is understandable, tested and maintainable. 

• Defects and blockers are raised early and resolved collaboratively. 

• Knowledge and delivery independence increase over time. 

Clearance requirements:

• SC required to start
• SC required for the role

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Leidos UK! Join our team and discover a culture of collaboration, innovation, diversity, trust, caring management, communication transparency, work-life balance, and overall job satisfaction...

What we do for you:
At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance.

We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes:
•    Contributory Pension Scheme
•    Private Medical Insurance
•    33 days Annual Leave (including public and privilege holidays)
•    Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme)

•    Flexible Working Scheme

Commitment to Diversity:

We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture.  We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone.  If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs.

Who We Are:

Leidos UK & EUROPE – we work to make the world safer, healthier, and more efficient through technology, engineering and science.

Leidos is a growing company delivering innovative technology and solutions focused on safeguarding critical capabilities and transformation in frontline services, our work in the United Kingdom includes addressing some of the most complex problems in defence, healthcare, government, safety and security, and transportation.

What Makes Us Different:

Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world.  You can inspire change.

Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team.  We have been empowering our people to work flexibly for years.  Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours.          

People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing. We believe that extraordinary people need opportunities to grow, to be inspired and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that enhance your future.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.