Software Developer, Software Engineer, Java Developer

Make an Impact with Leidos!
Leidos Defense Sector has an opportunity in the Integrated Tactical Warning/Attack Assessment (ITW/AA) and Missile Defense mission areas.

Leidos Defense Sector has an opportunity in the Integrated Tactical Warning/Attack Assessment (ITW/AA) and Missile Defense mission areas.

This Software Developer role includes trade studies, system engineering, model-based system engineering, portfolio analysis, software development demonstration and product testing and deployment to Cheyenne Mountain. Leidos is focused on finding the best people, processes, and tools that will provide solutions in data integration and fusion, data analytics, data mining, predictive analytics, data visualization, and decision support tools. This position will report directly to the Program Manager.

• Design and implement containerized environments for Java and C++ applications.
• Develop mission-critical software supporting missile defense systems.
• Communicate and document technical solutions for integrated engineering teams in a fast‑paced environment.
• Stay updated on state‑of‑the‑art programming techniques and technologies.
• Conduct software design and code reviews to ensure product quality.
• Collaborate with System Engineering teams to synchronize, schedule, and demonstrate capabilities to customers.
• Manage regression coding and deployment delays with third‑party contractors and stakeholders.

• Bachelor’s degree in Software development or related discipline with 4+ years of relevant experience. (Additional related experience, training, and/or certifications may substitute degree requirements)
• US Citizen; currently possess an active DoD Secret security clearance.
• Expertise in C++ and Java programming.
• Experience in developing micro‑services and containerized environments.
• Strong ability to work independently and collaboratively within engineering teams.
• Familiarity with Agile software development processes.

• Master’s degree in associated field.
• Effective communication skills and experience managing multiple tasks.
• Experience in FORTRAN.
• Experience with missile warning and missile defense.
• Understanding of missile warning message types.

January 14, 2026

Pay Range $87,100.00 – $

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 (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.

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 and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment‑related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the  automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via Whats App, Telegram, etc.

If you received an email purporting to be from Leidos that asks for payment‑related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at

If you believe you are the victim of a scam, contact your local law enforcement and report the incident 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, physical or mental 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.