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# Software Engineer

- **Company:** Cornerstone Defense
- **Location:** Sterling, VA, United States
- **Experience:** Expert
- **Salary:** $180,000.0 - $200,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Agile Methodology, Confluence, JIRA, Unit Testing, Unix, Code Review, Linux, DevOps, Junit, Python (Programming Language), Apache Maven, Object-Oriented Software Development, Standard Sql, Secure Coding, Software Engineering, Software Requirements Analysis, SonarQube, Systems Integration, Git, Kubernetes, Bitbucket, Software Performance, Docker, Jenkins
- **Published:** October 26, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8492082/software-engineer

## About the Role

* Active and transferable U.S. government issued TS/SCI security clearance 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.
 * Eight (8) years of experience in object-oriented software design and development using Java in a Linux or UNIX environment.
 * Experience using unit testing tools (e.g., JUnit).
 * Experience with Python.
 * Experience developing software in an Agile/DevOps environment., * Experience working in a DevOps environment using Docker, Kubernetes, Jenkins, Maven, Jira, Git, BitBucket and Confluence.
 * Experience working with SonarQube
 * Experience working with SQL
 * Experience working in an Agile Development environment
 * Security+ certification
 * Experience with satellite communication systems and protocols is highly preferred.
 * Familiarity with secure coding practices, especially in a defense or aerospace setting.
 * Master's degree in Science, Technology, Engineering or Mathematics (STEM).

## Description

* Design, develop, and maintain advanced software applications for our Satellite Ground Systems.
 * Collaborate closely with systems engineers, hardware designers, and other software engineers to deliver reliable and high-performance software solutions.
 * Design, implement, and test Java and Python based applications and software components for satellite ground systems.
 * Work in parallel with legacy platform teams to eventually migrate workloads onto your pipelines.
 * 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.
 * Learn the workings of satellite ground systems.
 * Work with new tools that will keep you state-of-the-art.