Lead Software Developer - Java

Leidos is hiring an experienced Lead Software Developer (Java) to support the development of next-generation flight service and air traffic systems. This onsite role in Gaithersburg, MD works within a Scaled Agile organization, focused on designing and implementing containerized applications in a highly regulated, safety-critical environment.

What you’ll do

• Own software development activities both independently and with a team, including writing, testing, debugging, and maintaining source code in an Agile environment.
• Develop solutions to complex issues.
• Participate in daily stand-ups, Release Planning, and other team activities.
• Create and run unit and functional tests.
• Troubleshoot and support resolution of technical issues across lab and operational environments.
• Provide support to system engineering, test engineering, and system owner teams as needed.

What you bring

• Education and experience: Bachelor’s degree in computer science or a related field with 4-8 years of relevant experience, or a Master’s degree with 2-6 years of experience.
• Java and React experience.
• Web development experience with HTML, CSS, JavaScript.
• Unit testing experience with Junit and Mockito.
• Experience with RESTful APIs and data formats including JSON, XML, and XSD.
• Experience with Spring Framework, Spring Security, and Spring Boot.
• Linux experience.
• Version control experience with Git or Subversion.
• Experience using development tools and IDEs such as Eclipse and VS Code.
• Experience with AI-assisted software development workflows and tools (examples include Claude Code and Codex).
• Experience with cloud-based systems and working in Agile.
• Solid understanding of sound software development principles and practices.
• Ability to plan and prioritize personal tasking and communicate clearly in writing and verbally.
• Capacity to deliver high-quality work both independently and as part of a team in a fast-moving environment.
• Ability to obtain an SF-85 Public Trust suitability determination, and US citizenship required.

Preferred background

• Knowledge of Agile/SAFe practices.
• Python, Ansible, YAML, Linux shell scripting.
• DevSecOps practices and CI/CD pipelines.
• Experience with MongoDB.
• Knowledge of air traffic control and flight services.

Compensation and benefits

Pay range: USD 87,100 to 157,450 per year.

• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

For U.S. positions: While subject to change based on business needs, Leidos reasonably anticipates this requisition will remain open for at least 3 days with an anticipated close date no earlier than 3 days after the original posting date.