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Software Engineer with Security Clearance
Cornerstone DefenseSterling, VA🇺🇸United StatesPosted 15 Jul 2026
Quick Overview
Salary
$180k - $200k/yr
Work Type
Hybrid
Schedule
Employee
Level
Mid Senior
Job Description
Software Engineer Dulles, VA or State College, PA Active TS/SCI Compensation Range: $180,000-$200,000 Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense. Job Responsibilities: • 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. Basic Qualifications: • 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. Preferred Qualifications: • 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). Company Benefits: Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.
Skills
Docker
SQL
SonarQube
Agile
Confluence
Git
JUnit
Java
Jenkins
Jira
Kubernetes
Python
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