Linux/Windows Systems Administrator - Top Secret Clearance

Company: Lockheed Martin
Location: King of Prussia
Posted on: January 16, 2026

Job Description:

Job ID: 712496BR Date posted: Dec. 09, 2025 Description: What We‘re Doing: Lockheed Martin‘s Electronic, Cyber & Information Warfare (ECIW) market segment within the RMS C6ISR line of business is focused on ensuring our customers can dominate the full Electromagnetic Spectrum (EMS), bringing capabilities to bear in the realms of intelligence, surveillance and reconnaissance (ISR), cyber techniques and effects, electronic warfare (EW), information operations (IO), and 5G.MIL; while delivering full-spectrum cyber capabilities and cyber resilient systems to our defense, intelligence community and global security customers. We are dedicated to helping governments and militaries around the world protect their platforms, systems, networks and data by: protecting networks, cyber hardening weapons, providing mission and training systems; outfitting cyber warriors with technologies for offensive and defensive missions; developing advanced technologies that enable cyber operations; and helping the intelligence community collect, analyze and disseminate threat intelligence. You‘ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. Who we are: Our team is solving the tough challenges and pushing the boundaries of technology to help our customers achieve their missions. The Work: As a Systems Administrator on the ECIW team, you will: - Work in an agile scrum environment providing support for implementation, troubleshooting and maintenance of various Information Technology (IT) systems - Manage IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices - Patch and harden Linux RedHat OS and works with Security personnel to protect against Cyber Threats. Who you are: You thrive in a collaborative, multidisciplinary engineering environment and are committed to delivering best-in-class products and solutions. Why join us: Your Health, Your Wealth, Your Life Our flexible schedules, competitive pay and comprehensive benefits enable you to live a healthy, fulfilling life at and outside of work. Learn more about Lockheed Martin‘s comprehensive benefits package here! We support our employees, so they can support our missions. RMSC6ISR OneLMHotJobs Basic Qualifications: • Bachelor‘s degree in a related discipline with 2 years of professional experience, or equivalent experience/combined education. • Experience with both Linux and Windows system administration, including installing, patching, troubleshooting and hardening Linux and Windows operating systems (both bare-metal and virtual machines) • System Administration knowledge of LAN and WAN networking topographies, Virtualization Technologies • Must currently have an active Top Secret Clearance Desired Skills: • Windows and Linux OS patching/security hardening in a classified environment • Experience with offline RHEL/Ubuntu Repo server management • Experience with virtualization environments (e.g. VMWare) and storage array networks (e.g. NetApp, TrueNAS appliances) • Scripting experience - Python, Bash, PowerShell • Boot image creation • Cisco switch configuration • Effective oral and written communication skills • Ability to work effectively in a rapid paced, team environment • CompTIA Security Certification (current - will be required within 6 months of start) • CompTIA Linux or Red Hat Certified Systems Administrator Certification • Ability to provide in-depth monitoring, able to identify and fix issues utilizing various troubleshooting techniques and procedures • Agile Scrum development experience Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration. Clearance Level: TS/SCI Other Important Information You Should Know Expression of Interest: By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings. Ability to Work Remotely: Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility. Work Schedules: Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits. Schedule for this Position: 4x10 hour day, 3 days off per week Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics. The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration. At Lockheed Martin, we use our passion for purposeful innovation to help keep people safe and solve the world‘s most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work. With our employees as our priority, we provide diverse career opportunities designed to propel, develop, and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility. If this sounds like a culture you connect with, you‘re invited to apply for this role. Or, if you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs, and apply for roles that align with your qualifications. Experience Level: Experienced Professional Business Unit: RMS Relocation Available: Possible Career Area: Information Technology Type: Full-Time Shift: First

Keywords: Lockheed Martin, New York , Linux/Windows Systems Administrator - Top Secret Clearance, IT / Software / Systems , King of Prussia, New York