Leidos has a new and exciting opportunity for a Software Engineer 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, 401K 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!  

Are you seeking a new and challenging position supporting a complex program? Well, look no further! This is an exciting time to contribute to an important program with lasting impactful results. Leidos is currently looking to add a Software Engineer (SWE-3) to a growing task. Tasks will include new design and prototyping within a fast-paced Agile team structure.

Full Stack Software Engineer (SWE-3) — Make an Impact That Matters

Leidos is seeking a driven and experienced Full Stack Software Engineer to support a high-stakes, mission-critical program. In this role, 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.

💰 Sign-on Bonus: $25,000

Primary Responsibilities

Design, develop, and enhance secure software applications and systemsIntegrate new software into evolving operational environmentsAnalyze user needs to craft efficient and scalable solutionsDebug and optimize existing software for performance and reliabilityImplement complex algorithms that meet rigorous technical standardsCreate and maintain system documentation and technical reportsCollaborate in Agile Scrum teams to deliver rapid, high-quality releases

Basic Qualifications

20+ years of software engineering experience on comparable programsBachelor's degree in Computer Science or related disciplineTS/SCI clearance with Polygraph

Preferred Qualifications

Proficient in Java for backend developmentStrong knowledge of Git, Linux, Jira, Eclipse, and ConfluenceFamiliarity with front-end frameworks (React, Angular, or Vue)Proven ability to lead technical efforts and ensure code quality

CONMD

CSSRC

Original Posting:July 24, 2025

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 as listed above.

Pay Range:Pay Range $148,850.00 - $269,075.00

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.