Java Software Engineer

Description

Leidos has a new and exciting opportunity for a Java 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!

Leidos is looking for a Mid-Level Java Software Engineer to assist building and maintaining functional web pages and applications. The successful candidate will work on a mix of web service development, full stack web application development and robust persistence layer implementations in an Agile Scrum environment. This involves the use of Themes, Epics, User Stories, acceptance criteria and other system engineering artifacts as part of an Agile team.

He/she will use a variety of software engineering best practices and clean coding techniques to ensure that developed code is maintainable, efficient, reliable, understandable, secure, fault tolerant and meets S.O.L.I.D coding principles.

The candidate will be knowledgeable about (and apply) secure software development principles and techniques. He/she will use software tools in cooperation with continuous integration and test automation management process and understand software components and their interface requirements. The candidate will interface with software engineers, system engineers, information assurance engineers, test engineers, quality assurance, and other project team members. He/she will be responsible for setting the standards and helping the team adopt and adhere to Test Driven Development (TDD) practices within the Leidos Agile Framework to ensure the proper degree of engineering rigor is applied to all assigned tasks.

• BS Degree in Computer Science or equivalent. At least 4+ years of experience with software development / engineering, preferably in a web-based environment. Following are a list of required and preferred languages, frameworks and skillsets.
• Must have an active Secret Clearance
• Knowledge with Java Swing GUI
• Knowledge with GIT or other configuration management tools
• Familiarity with Spring Boot Library / Spring Framework
• Interested in Cybersecurity protocols and secure communications
• Experience in Scrum Methodology or other Agile environments (e.g., SAFe, XP)
• Works well in a team environment and has excellent written and communication skills
• DoD 8570 approved security certification (i.e., Security +) (Will be required 90 days after hire).

• Knowledge with Networking / Communication Protocols such as TLS Handshake and HTTPS
• Experience working with Maven
• Experience with web-based (HTML, CSS, JavaScript) in a web-based environment
• Experience with Web Services Architectures (REST, SOAP, AWS)
• Experience with Software CM (e.g., Git, Git Hub)
• Experience with Continuous Integration / Quality, and Dev Ops concepts and tools / technologies (e.g., Ant / Maven, Jenkins, Sonar Qube, Fish Eye, Crucible, Gradle, Junit)
• Experience with Build Scripts (e.g., Maven, ANT)
• Experience with Agile Management Tools and Concepts (e.g., Version One, JIRA, Rally, etc.)
• Experience with Web Server Configuration (e.g., JBOSS, Wildfly, Tomcat)
• Experience with Database Development (e.g., Postgres, SQL Server, MySQL, SQLite, Oracle)

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:
February 24, 2026

For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job…