Senior AI Software Engineer Security Clearance

Overview

Leidos is seeking a Senior Software Engineer with AI-enabled development experience based in Gaithersburg, MD;
Eagan, MN; or Egg Harbor, NJ to support the UK National Airspace System Replacement Product Delivery Team (UK NASR PDT). This role offers the opportunity to work on real-time, safety-critical systems that directly support national air traffic operations for the United Kingdom. You will help modernize a high-availability air traffic management platform using both traditional systems engineering practices and AI-augmented software development techniques.

This is a hybrid schedule with 3 days onsite and 2 days remote.

• Design, develop, test, and maintain software for real-time, high-availability systems
• Apply AI-assisted development tools to accelerate coding, refactoring, debugging, and automated test generation
• Use AI responsibly across the full SDLC — including requirements analysis, design, implementation, testing, documentation, and code review
• Analyze complex system requirements and translate them into efficient, maintainable designs
• Develop and maintain automation scripts across development, test, and production environments
• Promote code quality, reuse, traceability, and cross-team collaboration

• AI-Driven Engineering Experience We are specifically seeking engineers who actively integrate AI into their daily development workflow.
• Hands-on experience using AI-assisted coding tools (e.g., Claude Code, Git Hub Copilot, or similar) for:
  • Code generation and refactoring
  • Debugging and automated test creation
  • IDE-integrated workflows
• Familiarity with large language model platforms (OpenAI, Anthropic, Google Gemini, etc.)
• Experience designing effective prompts and validating AI-generated output
• Understanding of human-in-the-loop development and responsible AI usage
• Ability to evaluate AI-generated outputs for correctness, performance, safety, and bias — especially in regulated or safety-critical environments
• Experience incorporating AI/ML techniques into software engineering workflows
• Experience with automated testing frameworks
• Core Technical Qualifications
• Bachelor’s degree in Computer Science or related field with 8+ years of relevant experience OR Master’s degree with 6+ years of relevant experience
• Strong object-oriented programming experience
• Proficiency in C, C++, and/or Ada (Ada preferred but not required)
• Experience developing real-time, multi-threaded systems
• Familiarity with Linux (Red Hat), virtual machines, and hypervisors
• Experience with low-level communications protocols (TCP/IP, UDP, SCTP)
• Experience with hardware or complex system integration
• Experience with source control and configuration management tools
• Strong communication skills and ability to work independently and within cross-functional teams
• Ability to obtain and maintain a Public Trust clearance
• US citizenship required

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

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 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.

Benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at

Securing Your Data:
Be aware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during the employment application process, nor will Leidos advance money as part of the hiring process. Leidos will only communicate via emails generated by the  automated system. If you suspect a scam, contact your local law enforcement and report it to the U.S. Federal Trade Commission.

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.