Principal Java Developer
Listed on 2026-07-10
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Software Development
Java Developer, Backend Developer, Software Engineer, DevOps
Description
Leidos has an exciting opportunity for a Principal Java Developer in our Intel Security Sector's Analysis Solutions Business Area. Our talented team is at the forefront of Security Engineering, Computer Network Operations, Mission Software, Analytical Methods, Signals Intelligence, and Cryptographic Key Management. Leidos offers competitive benefits including paid time off, holidays, 401K match, flexible schedules, stock purchase plans, upskilling, and parental leave.
Job SummaryA Java developer on this program provides Agile development and operations and maintenance for mission critical systems. The role participates in 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- Design, develop, test and maintain high-performance, scalable backend microservices using Java and the Spring Framework to meet customer needs.
- Participate in software programming initiatives, shape backend architecture, mentor team members, and conduct code reviews.
- Develop and direct software system validation and testing methods using Junit and Katalon, and employ integrated custom solutions for automated deployment.
- Develop, prototype and deploy solutions within a cloud-based platform leveraging platform services.
- Analyze proof of concept, performance, and end‑to‑end testing and coordinate infrastructure needs to meet customer mission needs.
- Support the Agile software development lifecycle following SAFe practices while coordinating with team members, Product Owners, and Scrum Masters to ensure User Story alignment and implementation.
- Document and perform systems software development, including deployment of build artifacts across environments using Git Flow, Git Hub, Jenkins, and scripting languages such as Python and Bash.
- Apply and identify software development best practices and standard operating procedures to create innovative solutions that meet technical customer needs.
- In‐depth experience with Agile practices, service‑oriented environments, and development practices.
- In‐depth experience with Java, the Spring Framework, microservices architecture, design patterns, RESTful APIs, and integration with relational and No
SQL databases. - In‐depth experience integrating with and delivering within Dev Ops toolsets and practices.
- Direct experience using performance testing tools such as Junit and scripting languages such as Python and Bash in an Agile environment.
- In‐depth experience developing on commercial cloud platforms (AWS, Google Cloud, Azure) and leveraging cloud data services (S3, RDS, EFS).
- In‐depth experience using version control systems and issue tracking systems.
- Bachelor’s degree with 12 or more years of relevant experience or Master’s degree with 10 or more years of experience; additional experience may substitute for a degree.
- Active TS/SCI with polygraph security clearance.
- Experience writing software that interfaces with data technologies such as Elasticsearch, Postgres, DynamoDB, Kafka, AWS SQS/SNS, AWS Lambda, and AWS S3.
- Experience with SAFe development practices.
$ - $
Commitment to Non‑DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
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