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Software Engineer Sr Security Clearance

Job in Herndon, Fairfax County, Virginia, 20170, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-06-03
Job specializations:
  • Software Development
    Software Engineer, DevOps, Cloud Engineer - Software, Full Stack Developer
Job Description & How to Apply Below
Position: Software Engineer Sr with Security Clearance
Job Number 729036

Description:

WHO WE ARE Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers, we are proud to be at the forefront of cutting-edge technology and engineering. LM SPACE: WHAT WE'RE DOING Space is a critical domain, connecting our technologies, our security and our humanity.

While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future. And we're reimagining how space can connect us, ensuring security and prosperity. We're creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision.

THE WORK Lockheed Martin is seeking a talented level 3 Software Engineer with an active TS/SCI clearance to work from either our King of Prussia, PA or Herndon, VA location(s). We are seeking a Software Engineer to participate in the design, development, test and maintenance of complex mission application software and database applications for the Paragon organization which supports multiple programs.

You are someone who is (or is willing to become) a Domain/Subject Matter Expert in the Mission Management and/or Command and Control domains. As a Software Engineer with Paragon, you will:
• Apply knowledge of computer hardware and software, information processing techniques, and information gathered from subject matter experts and system users to develop software applications.
• Plan, conduct, and coordinate software development activities.
• Design, develop, document, test, and debug software that contains logical and mathematical solutions to business/mission problems.
• Apply the appropriate standards, processes, procedures, and tools throughout the development life cycle.
• Participate in code peer reviews, application demonstrations, data analysis, test planning and execution to ensure software intent and standards are met.
• Prepare operating instructions, generate program development documentation, and analyze system capabilities.
• Participate in failure investigations, anomaly resolution activities, and retrospective events. This is an EARLY-MID CAREER (level
3) ROLE where candidates typically require 3+ years of professional experience and a BS degree. If you think this describes you and you are looking for an opportunity to grow and challenge yourself then we would love for you to apply! WHY JOIN US Opportunity for Impact:
Join a team that is at the forefront of innovation in the aerospace and defense industry and make a significant impact on the success of our organization. Professional Development:
Take advantage of unparalleled opportunities for growth and advancement within Lockheed Martin, with access to world-class training and development programs. Collaborative Culture:
Work alongside some of the brightest minds in the industry who share your passion for excellence and who are committed to supporting each other's success. Competitive Benefits: LM employees play an active role in strengthening the quality of life where we live and work by volunteering more than 850,000 hours annually. Here are some of the benefits you can enjoy:
• Medical
• Dental
• 401k
• Paid time off
• Work/life balance
Career development
Mentorship opportunities
• Rewards & recognition We care about our employees and offer a generous benefits package : 401K, PTO, and work/life balance and more.

Basic Qualifications:

• Experience developing backend application software on a Linux platform using one or more of the following programming languages: C/C++, Java on a Linux platform.
• Agile software development experience (SAFe, Kanban, Scrum).
• Demonstrate initiative, creativity, and innovation in developing application software that satisfies mission requirements and resolves code/logic defects in an efficient manner.
• Experience designing, testing and debugging complex software applications with many…
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