Leidos has a new and exciting opportunity for a Senior Software Engineer in our Intelligence Sector, 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!

Leidos is seeking a driven and experienced Senior 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.

This position is eligible for a Sign-on Bonus: $25,000

Primary Responsibilities

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

Basic Qualifications

Masters and 15+ years of software engineering experience on comparable programs or Bachelor's degree in Computer Science or related discipline and 17+ years of related experience
Common software development tools such as Git, Kira, Confluence and other Atlassian Products
Experience with Linux Command Line
Recent experience with Java or similar programming language
Basic understanding of Container Technologies such as Docker
Basic understanding of web development and APIs
Ability to troubleshoot and problem solve
Willingness to learn new software and technologies related to backend or frontend development
Security Clearance Requirement: Active Top Secret/SCI clearance with Polygraph

Required Technical Skills:

Experience with Spring Boot
Experience with JavaScript, ReactJS specifically
Experience with Apache Kafka
Experience with Apache Nifi
Understanding of Docker/Docker Compose
Experience with build tools, such as Maven
Experience with SQL databases

CONMD
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If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

July 21, 2026

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 $154,050.00 - $278,475.00

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.