Software Engineer
Confirmed on the employer's own hiring board on Oct 22, 2026. First seen by Alion on Oct 20, 2026. Leidos scores B on the Alion truth index.
Software Engineer
Location: This is a Hybrid role. Whiteley, Hampshire
Clearance Required: This role will require attainment and maintenance of SC clearance
Shape the future of Air Traffic Management
At Leidos, the software we build helps keep millions of passengers moving safely every day. Our technology supports some of the world's most advanced Air Traffic Management (ATM) systems, helping air traffic controllers make critical decisions that keep skies safe, efficient, and connected.
For more than 50 years, Leidos heritage companies have been at the forefront of air traffic control innovation. Today, our technology supports approximately 75% of U.S. air traffic and around 60% of global air traffic. In the UK, we've partnered with NATS since the early 1990s and continue to play a key role in shaping the next generation of ATM solutions.
We're looking for a Software Engineer to join our team and help develop award-winning technology that has a real-world impact.
Why Join Us?
This is more than a software engineering role. It's an opportunity to:
- Work on complex, meaningful systems that contribute to public safety
- Develop technology used by Air Traffic Control Officers around the world
- Collaborate with experienced engineers in a supportive, agile environment
- Learn a fascinating industry, even if you have no previous Air Traffic Management experience
- Grow your technical skills while working on challenging and innovative projects
- Be part of a business with an exciting pipeline of UK and international programmes
We welcome applications from people with diverse backgrounds and experiences. If you're excited about the role but don't meet every requirement, we'd still love to hear from you.
What You'll Be Doing
As a Software Engineer, you'll be part of a collaborative agile team, contributing throughout the software development lifecycle.
Your responsibilities may include:
- Designing software using modern object-oriented and functional programming principles
- Developing high-quality software solutions in a complex technical environment
- Building tools and applications to solve challenging engineering problems
- Writing clean, maintainable, and testable code
- Conducting unit, functional, and integration testing
- Investigating and resolving technical issues identified during testing and development
- Collaborating with engineers, testers, and stakeholders to deliver sprint objectives
- Contributing to technical documentation and knowledge sharing
- Applying software engineering standards, best practices, and continuous improvement principles
What We're Looking For
We're interested in motivated engineers who enjoy solving problems, learning new technologies, and working as part of a team.
Essential Skills & Experience
- Experience developing software using C and/or C++
- Experience working within an Agile development environment (Scrum, SAFe, or similar)
- Familiarity with modern software development practices and tools
- Knowledge or practical use of AI-assisted software development
- Good communication and collaboration skills
- Ability to work effectively within a multidisciplinary engineering team
- Experience using version control systems such as Git or Subversion
- A structured approach to software development and quality
Desirable Experience
Any of the following would be beneficial, but are not essential:
- Java development experience
- Linux development environments
- Scripting languages such as Python
- Container technologies and Infrastructure as Code (e.g. Docker, Puppet)
- Integration technologies such as Apache Kafka or Apache Camel
- Atlassian tools including Jira and Confluence
- Cloud platforms such as AWS
- Full software lifecycle experience, from design through to deployment
- Real-time, safety-critical, or highly regulated systems
- Systems modelling and design tools
- Understanding of systems engineering, integration, and testing activities
What Makes You Successful
You'll thrive in this role if you:
- Enjoy tackling complex technical challenges
- Are curious and eager to learn
- Take ownership of your work
- Value collaboration and teamwork
- Communicate clearly with both technical and non-technical colleagues
- Care about delivering high-quality software
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 and much more!)
- Flexi-Time Working
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:
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
£47,600.00-£61,000.00The 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.