Sr. Software Engineer TS​/SCI Polygraph

Description

Leidos has a new and exciting opportunity for a Senior 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!

The Sr. Software Engineer will support the design, development, testing, deployment, and maintenance of a Data Dictionary capability that provides metadata specification, storage, and access services. This system includes a Java/Spring-based backend, RESTful APIs, and a web-based user interface. The engineer will work independently to implement features, contribute to architectural decisions, and support full lifecycle software delivery within a collaborative Agile environment.

You must have an active/current TS/SCI Polygraph on day one to qualify.

• Develop, maintain, and enhance Java/Spring applications supporting:
  • A web-based user interface for creating and managing metadata specifications, including attributes and valid values
  • A database solution for storing specifications
  • RESTful services enabling programmatic access to specifications
• Design and implement backend services and APIs
• Contribute to system architecture, technical design, and engineering best practices
• Develop and maintain database schemas, queries, and integrations
• Support CI/CD pipelines, deployment activities, and operational readiness
• Collaborate with cross-functional teams, stakeholders, and system integrators
• Mentor junior engineers and provide technical guidance

• Active TS/SCI clearance with polygraph
• Bachelor’s degree in Computer Engineering, Computer Science, or a related technical field
  • Four (4) additional years of software engineering experience may be substituted for a bachelor’s degree, for a total of twelve (12) years of experience
• Minimum of eight (8) years of software engineering experience
• Minimum of three (3) years of experience in SIGINT, IA, or IT domains
• Minimum of three (3) years of experience with modern Java and Spring/Spring Boot development
• Experience developing RESTful APIs and JSON-based web services
• Strong SQL and relational database experience, including Postgre
  
  SQL or equivalent technologies
• Experience working in Linux development environments

• Java/J2EE application development
• Spring Framework and Spring Boot
• Postgre
  
  SQL and SQL database design
• User interface design, development, and testing
• REST, XML, and JSON web services
• Linux-based systems
• Docker and Kubernetes
  
  CI/CD pipelines and deployment automation
• Task tracking and ticketing systems such as JIRA or Redmine
• Clear, professional communication of technical ideas, status, and issues to both peers and management

All 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.