Linux/Windows Systems Administrator - Top Secret Clearance

Lockheed Martin
King of Prussia, PA, US
Posted Apr 20, 2026

JOB ID: 725189BR

Date posted: Apr. 21, 2026

Description:

What We’re Doing:

Lockheed Martin’s Radars, Electronic Warfare \& Acoustic Systems (REAS) market segment within the RMS Sensors, Effectors, Mission Systems (SEMS) 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, harden and upgrade Linux RedHat and Windows and related virtualization and containerization platforms while working 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.

    \#RMSC6ISR \#OneLMHotJobs

    Basic Qualifications:

  • Bachelor’s degree in a related discipline with 1\+ 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:

Top Secret

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:

Yes

Career Area:

Information Technology

Type:

Full\-Time

Shift:

First

At Lockheed Martin, we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges.

Pioneering Defense Technology: From aerospace to outer space to cyber space, you can innovate mission solutions alongside the best minds in the business.

United By Culture: Excellence, integrity, and collaboration define us. We accelerate change and embrace one another’s perspectives to win for our customers.

Real Impact, Real Growth: Grow your career and skills for life. Our wide array of opportunities and technology\-driven learning programs enable your development and agility.

Your Health, Your Wealth, Your Life: Competitive pay, comprehensive benefits and flexible schedules designed so you thrive — at work and beyond.

Empowered to Be Your Best: Use your strengths to make a difference in the lives of one another, our customers, our communities, and our planet.

Here, the possibilities are endless because we offer:

Flexible Schedules, dependent on role

Levels: Student, Entry, Mid, Senior, Management

Locations: Nationwide \& OCONUS Positions

Job Details

Job Type

admin_data_entry

How to Apply

This job has specific application instructions. Please read the full job description carefully.

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Original job posting from: Indeed_linkedin

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