Sr. Java Developer Security Clearance

Position: Sr. Java Developer with Security Clearance
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- Description Leidos has a new and exciting opportunity for a Sr. Java Developer 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!

Job Description A Java developer on this program provides Agile development and operations and maintenance for mission critical systems. Based in Dev Ops framework, this role participates in major deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, design, coding and unit testing. Primary Responsibilities :
* Design, develop, test and maintain high-performance, scalable backend microservices using Java and the Spring Framework to meet customer information technology needs.
* Participate in software programming initiatives and code reviews.
* Develops software system validation and testing methods using Junit and Katalon and uses integrated custom developed software solutions to leverage automated deployment technologies
* Develop, prototype and deploy solutions within a cloud-based platform leveraging platform services.
* Support the Agile software development lifecycle following Program SAFe practices while coordinating closely with team members, Product Owners and Scrum Masters to ensure User Story alignment and implementation to customer use cases
* Document and perform systems software development, including deployment of build artifacts across different environments leveraging Git Flow constructs and using industry leading Dev Ops tools like Git Hub, Jenkins, and scripting (e.g., python, bash)
* Apply and identify software development best practices and standard operating procedures creating innovative solutions to meet the technical needs of customers. Basic Qualifications :
* Familiarity with common Agile practices, service-orientated environments, and development practices
* Familiarity with Java based design patterns and implementing RESTful APIs.
* Familiarity with integrating with and delivering within Dev Ops toolsets/practices
* Familiarity with development in Commercial Cloud Platforms (ex, AWS, Google Cloud, Azure) and leveraging cloud data services (ex: S3, RDS, EFS)
* Familiarity with using version control systems and issue/problem tracking systems
* Bachelor’s degree with 8 or more years of prior relevant experience or Master’s degree with 6 or more years of relevant experience. Additional years of experience may be substituted in lieu of a degree.
* To be considered must have an active TS/SCI with polygraph security clearance

Preferred Qualifications :
* Familiarity with the Spring Framework, microservices architecture and integrating with relational and No

SQL databases.
* Direct experience utilizing software testing performance tools, such as Junit and scripting languages, such as Python, and Bash while working in an Agile development environment
* Experience with SAFe development practices CABARESTON 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:
September 11, 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 $ - $ The Leidos pay range for this job level is a…