Principal Java Developer

Leidos has a new and exciting opportunity for a Principal 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 DevOps framework, this role participates in and/or directs major deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, architecture and design, coding and unit testing. Primary Responsibilities Developing and directing software system validation and testing methods using Junit and Katalon Develop and integrate custom developed software solutions to leverage automated deployment technologies leveraging an Atlassian tool suite like JIRA and Confluence to track activities Develop, prototype and deploy solutions within Commercial Cloud Solutions leveraging Infrastructure platform services creating innovative solutions to meet the technical needs of customers. Analyze (though proof of concept, performance, and end-to-end testing) and effectively coordinate Infrastructure needs driven by developed software to meet customer mission needs 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 GitFlow constructs and using industry leading DevOps tools like GitHub, Jenkins, and Unix bash scripting Basic Qualifications In-depth experience with common Agile practices, service-orientated environments, and development practices 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 In-depth experience developing in Commercial Cloud Platforms (ex, AWS, Google Cloud, Azure) and leveraging cloud data services (ex: S3, RDS, EFS) In-depth experience using version control and issue/problem tracking systems Bachelor’s degree with 12 or more years of prior relevant experience or Master’s with 10 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 Experience with Python, SpringBoot, Hibernate, Angular, Hive, Pig, or C++ Experience in AWS Data management services (Elastic Map Reduce, Lambda, Kinesis) Experience with SAFe development practices

CABARESTON

Come break things (in a good way). Then build them smarter. We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.” Original Posting: August 1, 2025 Description Leidos has a new and exciting opportunity for a Principal 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 DevOps framework, this role participates in and/or directs major deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, architecture and design, coding and unit testing. Primary Responsibilities Participate in software programming initiatives to support innovation and enhancement, using Java, JavaScript, Python, SpringBoot, Hibernate Developing and directing software system validation and testing methods using Junit and Katalon Develop and integrate custom developed software solutions to leverage automated deployment technologies leveraging an Atlassian tool suite like JIRA and Confluence to track activities Develop, prototype and deploy solutions within Commercial Cloud Solutions leveraging Infrastructure platform services creating innovative solutions to meet the technical needs of customers. Analyze (though proof of concept, performance, and end-to-end testing) and effectively coordinate Infrastructure needs driven by developed software to meet customer mission needs 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 GitFlow constructs and using industry leading DevOps tools like GitHub, Jenkins, and Unix bash scripting Basic Qualifications In-depth experience with common Agile practices, service-orientated environments, and development practices In-depth experience with Java, JavaScript, and the software development lifecycle, with experience delivering within DevOps toolsets/practices 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 In-depth experience developing in Commercial Cloud Platforms (ex, AWS, Google Cloud, Azure) and leveraging cloud data services (ex: S3, RDS, EFS) In-depth experience using version control and issue/problem tracking systems Bachelor’s degree with 12 or more years of prior relevant experience or Master’s with 10 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 Experience with Python, SpringBoot, Hibernate, Angular, Hive, Pig, or C++ Experience in AWS Data management services (Elastic Map Reduce, Lambda, Kinesis) Experience with SAFe development practices

CABARESTON

Come break things (in a good way). Then build them smarter. We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.” Original Posting: August 1, 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 $126,100.00 - $227,950.00 The Leidos pay range for this job level is a general guideline onlyand 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. #Featuredjob Receive tips & info on cleared job search, security clearances and career development. #J-18808-Ljbffr Leidos