Sr. Software Engineer TS/SCI Polygraph HANOVER

Leidos

$131K — $237K *
Aerospace & Defense
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Active TS/SCI clearance with Polygraph required
  • Bachelor's degree in Computer Engineering, Computer Science, or related field, or equivalent experience
  • 8+ years of software engineering experience
  • 3+ years in SIGINT, IA, or IT domains
  • 3+ years of modern Java and Spring/Spring Boot development
  • Experience in developing RESTful APIs and JSON-based web services
  • Strong SQL and relational database experience, particularly with PostgreSQL

Responsibilities

  • Develop and enhance Java/Spring applications for metadata specifications
  • Design and implement backend services and RESTful APIs
  • Contribute to system architecture and engineering best practices
  • Maintain database schemas and integrate queries
  • Support CI/CD pipelines and deployment readiness
  • Collaborate with cross-functional teams and stakeholders
  • Mentor junior engineers and provide technical guidance

Benefits

  • Collaborative Agile work environment
  • Opportunities for mentoring and professional growth
  • Engagement with cross-functional teams
  • Involvement in architectural decision making
  • Potential for exposure to cutting-edge technologies
Full Job Description
The 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.

Responsibilities

Primary responsibilities include:
  • 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


Required Qualifications
  • Active TS/SCI clearance with Polygraph up front (no sponsorship available)
  • 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 PostgreSQL or equivalent technologies
  • Experience working in Linux development environments


Desired Qualifications
  • Java/J2EE application development
  • Spring Framework and Spring Boot
  • PostgreSQL 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


Original Posting:
June 11, 2026

Pay Range:
Pay Range $131,300.00 - $237,350.00

The Leidos pay range for this job level is a general guideline only and 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.

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