Principal Software Developer

Leidos is seeking Principal Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of the Alaska Automation Capability (AAC). AAC is part of the FAA’s broader initiative to modernize legacy flight service systems, replacing aging infrastructure with a scalable, cloud-based platform designed to improve safety and operational efficiency—particularly in remote and high-dependency aviation environments like Alaska. AAC is a mission-critical, future-ready, cloud-based solution providing 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 DevSecOps 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 Res [... source excerpt omitted ...] ational environments. Provide support as needed for system engineering, test engineering, and system owner teams. Ability to communicate with executive leadership (internally or client) regarding matters of significant importance to the organization/project. Basic Qualifications Bachelor’s degree in Computer Science or a related field with 12-15 years of relevant experience or a Master’s degree with 10-13 years of experience. May also possess a Doctorate. In-depth knowledge of Java with substantial hands-on programming experience In-depth experience with Web development and commonly used front-end tools and languages (React, HTML, CSS, JavaScript) Extensive experience wi [... source excerpt omitted ...] nical staff that has significant impact on project results and outputs Ability to obtain SF-85 Public Trust (Tier 2) suitability determination US 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 YAML Knowledge of or experience with Linux shell scripting Knowledge of or experience with MongoDB Knowledge of air traffic control and flight services ATMC If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the st