Senior Software Developer

Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems. This work aligns with the FAA’s broader initiative to modernize legacy flight service capabilities, replacing aging infrastructure with scalable, cloud-based platforms designed to improve safety and operational efficiency—particularly in remote and high-dependency aviation environments.

These efforts focus on delivering mission-critical, future-ready solutions that provide safety-critical flight services to the pilot community.

As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native capabilities. You will work alongside cross-functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety-critical environment. In this position, you will design and implement software solutions independently while working closely with systems engineering, product delivery, and Dev Sec Ops  teams.

The primary focus is on developing containerized applications within an Agile/SAFe environment. This position supports government programs and requires the ability to obtain and maintain a favorable Public Trust investigation.

Primary Responsibilities Responsible for software development activities both individually and as a member of a team including writing, testing, debugging, and maintaining source code within an Agile environment.

Use AI-assisted development tools to accelerate coding, refactoring, debugging, and test creation.

Develop solutions to complex issues and problems that impact multiple areas or disciplines.

Actively participate in Agile scrum ceremonies and other related team activities.

Troubleshoot and participate in the resolution of technical issues in lab and operational environments.

Provide support as needed for system engineering, test engineering, and system owner teams.

Communicate with internal team members across multiple areas and client team members. May communicate with parties external to the organization.

Basic Qualifications Bachelor’s degree in Computer Science or a related field with 8-12 years of relevant experience, or a Master’s degree with 6-10 years of experience. May also possess a Doctorate.
Expert knowledge of Java with substantial hands-on programming experience

Extensive experience with Web development and commonly used front-end tools and languages (React, HTML, CSS, JavaScript)
Extensive experience with unit testing tools such as Junit and Mockito Significant experience with RESTful API, JSON, XML, XSDSignificant experience with Spring Framework, Spring Security, and Spring Boot Significant experience with Linux Significant experience with version control systems such as Git or Subversion

Experience with common development tools and IDEs (Eclipse, VS Code, etc.)Experience working within the Agile Scrum framework

Understanding of sound software development principles and practices

Ability to effectively communicate verbally and in writing

Ability to obtain SF-85 Public Trust (Tier
2) suitability determinationUS citizenship required

Preferred Qualifications

Experience with AI-assisted coding (Claude Code, Codex etc.)Experience with microservices and cloud-based environments

Knowledge of or experience with Python programming language

Knowledge of or experience with Ansible playbooks and YAMLKnowledge of or experience with Linux shell scripting

Knowledge of or experience with MongoDB Knowledge of air traffic control and flight servicesATMCIf you're looking for comfort, keep scrolling. At Leidos, we outthink,…