Software Engineers, Software Engineer, Java Developer

Description

Leidos anticipates several new and exciting opportunities for Software Engineers in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401(k) with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.

Join us and make a difference in National Security!

$25,000.

Leidos is seeking driven and experienced Full Stack Software Engineers to support a high‑stakes, mission‑critical program. In these roles, you'll help architect, develop, and integrate software solutions that shape national security and drive meaningful innovation. Join an Agile team where your expertise won’t just be valued—it will be vital.

• Design, develop, and enhance secure software applications and systems
• Integrate new software into evolving operational environments
• Analyze user needs to craft efficient and scalable solutions
• Debug and optimize existing software for performance and reliability
• Implement complex algorithms that meet rigorous technical standards
• Create and maintain system documentation and technical reports
• Collaborate in Agile Scrum teams to deliver rapid, high‑quality releases

• Bachelor's degree in Computer Science or related discipline. In lieu of degree, an additional 4 years of software engineering may be considered
• 7+ to 20+ years of software engineering experience supporting programs of similar type and scope will be required
• Familiarity with front‑end frameworks (React, Angular, or Vue)
• Proven ability to lead technical efforts and ensure code quality
• Experience with modern programming languages such as Java
• Clearance Requirement:
  Must have an active TS/SCI clearance with Polygraph

• Proficient in Java for backend development
• Strong knowledge of Git, Linux, Jira, Eclipse, and Confluence

$ - $

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.

Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement, and more. Additional 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. If you receive an email purporting to be from Leidos that asks for payment‑related information or any other personal information, 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 ((Use the "Apply for this Job" box below).).

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.

For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date of November 14, 2025.