> Markdown version of [/jobs/ext/1920116-principal-java-software-engineer-on-site](https://www.wearedevelopers.com/jobs/ext/1920116-principal-java-software-engineer-on-site). 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 Java Software Engineer (on-site) - **Company:** RTX - **Location:** State College, PA, United States - **Experience:** Expert - **Salary:** $107,500.0 - $204,500.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Software Applications, Systems Engineering, Unit Testing, Code Review, Linux, DevOps, Perl (Programming Language), Java Web Services, Spring Framework, Junit, Python (Programming Language), Object-Oriented Software Development, Ansible, Secure Coding, Software Engineering, Software Requirements Analysis, Systems Integration, Scripting, Atlassian Tools, Software Performance, Jenkins - **Published:** August 4, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=0e63090bab40a0c6 ## About the Role The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: TS/SCI with Polygraph Security Clearance Status: Active and existing security clearance required on day 1, * Active and transferable TS/SCI with Polygraph U.S. government issued security clearance with an adjudication date less than three years from your start date for this position, is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience. * Experience in object-oriented software design and development using Java in a Linux environment. * Experience using unit testing tools (e.g., JUnit). * Experience with scripting languages such as Perl or Python. * Experience in an Agile/DevOps environment. Qualifications We Prefer * Experience with Ansible, Jenkins, containers, and the Spring Framework. * Security+ certification. * Experience using the Atlassian tool suite. * Experience with satellite communication systems and protocols is highly preferred. * Familiarity with secure coding practices, especially in a defense or aerospace setting. ## Description * The Principal Java Software Engineer will design, develop, and maintain advanced software applications for our Satellite Ground Systems. This role involves close collaboration with systems engineers, hardware designers, and other software engineers to deliver reliable and high-performance software solutions. Other responsibilities to anticipate may include: * Design, implement, and test Java-based applications and software components for satellite ground systems. * Collaborate with cross-functional teams to define software requirements and specifications. * Work with previously written code and make modifications as necessary. * Ensure software performance, reliability, and scalability. * Participate in software design reviews, code reviews, and system integration activities. * Contribute to the completion of program and project milestones under the specific guidance of their immediate supervisor. * Follow established Software processes and procedures, development, documentation and maintenance/management of operations concepts, requirements (system, element, segment level), external and internal interfaces, and other software engineering work products/artifacts. * Stay updated with the latest advancements in Java and satellite technology to drive innovation. ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [#90DaysOfDevOps - The DevOps Learning Journey](https://www.wearedevelopers.com/videos/548-90daysofdevops-the-devops-learning-journey) - [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for)