Principal Software Engineer

Leidos•Annapolis Junction, MD

1d•$154,050 - $278,475

About The Position

Leidos has a new and exciting opportunity for a Principal Software Engineer in our Intelligence Sector's, 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! Are you passionate about modern software engineering and building enterprise applications with today's leading technologies? Leidos is seeking an experienced Software Engineer to join an Agile development team responsible for modernizing and enhancing a mission-critical enterprise application. This is an exciting opportunity to help transform a traditional Java application into a modern architecture utilizing Spring Boot, Angular, Docker, Kubernetes, RESTful APIs, relational databases, and modern DevSecOps practices. You'll work on challenging technical problems while contributing to architectural decisions, improving system performance, and helping shape the future of a critical enterprise system. If you enjoy modernizing existing applications, learning new technologies, and collaborating with highly skilled engineers in an Agile environment, we'd like to hear from you.

Requirements

Bachelor's degree in Computer Science or a related discipline from an accredited college or university.
Minimum of 14 years of software engineering experience on programs and contracts of similar scope, type, and complexity.
Active TS/SCI with polygraph

Nice To Haves

Experience developing Java enterprise applications using Spring Boot (or similar frameworks) and Angular (or comparable front-end technologies).
Experience designing and implementing RESTful APIs and integrating applications with Oracle, PostgreSQL, MariaDB, or other relational databases.
Experience with application modernization, including Spring Boot migrations, microservices, and database modernization initiatives.
Experience developing, deploying, and supporting containerized applications using Docker, Podman, and Kubernetes platforms (e.g., Rancher, Amazon EKS, OpenShift).
Familiarity with Kubernetes concepts including Deployments, Services, ConfigMaps, Secrets, Ingress, Persistent Volumes, Helm charts, and cloud-native architectures.
Experience implementing GitLab CI/CD pipelines, automated testing, DevSecOps practices, and modern software delivery processes.
Experience using Jira and Confluence in Agile environments, providing database operational support, and working with XML, JSON, or other structured data formats.

Responsibilities

Analyze user and system requirements to design, develop, test, and maintain Java and Angular applications.
Design, develop, and support RESTful APIs, service integrations, and data access components for Oracle, PostgreSQL, and other relational databases.
Support application modernization initiatives, including Spring Boot migration, database modernization, microservices, and containerization.
Deploy and support containerized applications in Kubernetes environments across cloud and on-premises infrastructure.
Participate in architecture reviews, code reviews, troubleshooting, technical design, and continuous process improvement.
Develop automated unit and integration tests, support CI/CD pipelines, and maintain technical documentation using Confluence and Jira.
Provide backup database administration support for Oracle, PostgreSQL, and MariaDB while cross-training across application, database, and deployment technologies to ensure operational continuity.