> Markdown version of [/jobs/ext/1427147-principal-software-engineer-ts-sci-polygraph](https://www.wearedevelopers.com/jobs/ext/1427147-principal-software-engineer-ts-sci-polygraph). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer TS/SCI Polygraph - **Company:** Leidos, Inc. - **Location:** Hanover, MD, United States - **Salary:** $154,050.0 - $278,475.0 - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), Systems Engineering, Confluence, JIRA, Computer Engineering, Data Architecture, Elasticsearch, Monitoring of Systems, Object-Oriented Software Development, Public Key Infrastructure, Logstash, Software Engineering, Extensible Markup Language (XML), Transport Layer Security, Spring-boot, Technical Debt, Indexer, Solid Principles, Kubernetes, Information Technology, Kibana, Docker, Elk Stack - **Published:** July 24, 2026 - **Apply:** https://dejobs.org/x/x/0FD231CCC48B48B9B79242547F51D7BE/job/ ## About the Role * TS/SCI Clearance with polygraph * Bachelor's Degree or higher in computer engineering or in a field related to the computer engineering or computer science disciplines is required. Requires Bachelor's degree with a minimum of 18 years of prior relevant experience or Masters with 15 years of prior relevant experience or Doctorate with 13 years of prior relevant experience. * Expert in Java (17+ preferred), the Spring Boot ecosystem, SOLID principles, OO design patterns, and REST interface standards/best practices. * Strong communicator with the ability to facilitate cross-team collaboration and clearly convey architecture and design concepts through both oral and written communication. * Skilled in developing technical documentation (including wiki sites, blogs, and XML/HTML content) and mentoring junior to mid-level software development peers. Desired Skillsets: * Strong experience with MongoDB Data Architecture (schema design, indexing, and aggregation). * Proficiency in Docker for local development and CI/CD pipelines. * Familiarity with Kubernetes orchestration and the ELK Stack (Elasticsearch, Logstash, Kibana) for system monitoring and troubleshooting. * Experience in PKI/TLS/SSL certificates * Knowledge of ICAM Capabilities and Integration * Familiarity using Confluence and Jira * Strong organization and time management skills, including the ability to multi-task and work independently with minimum supervision to meet deadlines ## Description The Principal Software Engineer will serve as technical anchor for a new feature/capability being added to our product.Ideal candidate will be able to architect/design a new feature and translate complex business requirements into robust, documented technical designs. Responsibilities will include coordinating closely with members of an Integrated Feature Team (IFT) to ensure high-quality delivery through the lifecycle. This role requires an active/current TS/SCI Polygraph up front., * Architectural Analysis & Design: Deconstruct complex requirements to determine system impact. You will lead the creation of design documentation using Object-Oriented (OO) principles, ensuring new features integrate seamlessly without technical debt. * Technical Shepherding: Act as the feature lead for a new capability. You are responsible for the "definition of done," guiding a feature from initial concept through development, testing, and deployment. * Cross-Team Coordination: Serve as the technical liaison to the Systems Engineering team to align on approach and constraints. * Team Leadership & Tasking: Decompose high-level feature designs into actionable tasks for the development team. Manage feature status to leadership and mentor junior/mid-level peers. * Quality Assurance: Conduct rigorous merge request (MR) reviews to maintain code standards, security protocols, and performance benchmarks. ## Related Videos - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. 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