Linux System Administrator

Job Locations US-AL-Huntsville
# of Openings
Clearance Required


Job Posting w benefits 720x352  20193


Modern Technology Solutions, Inc. (MTSI), is seeking a Linux System Administrator in Huntsville, Alabama.  At MTSI, our more than 1,200 co-owners recognize the high demand for specialized professionals within our industry and that you have many options to choose.  As an employee owned company where culture matters, we believe that by investing in our people we are investing in our company’s future! 


Modern Technology Solutions, Inc. (MTSI) is co-owned by more than 1,200 engineers, analysts, and professionals dedicated to providing high caliber services to aerospace and defense and intelligence customers across the US.  We are always looking for the best to join us as we grow.  


Why is MTSI known as one of the Best Places to Work in Huntsville for 10 years in a row?  

  • Interesting Work:  Our co-workers support some of the most critical programs.  
    Values: Our first core value is that employees come first.  We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry. 
  • Employee Ownership: we have a stake in each other's success, and the success of our customers.  It's also nice to know what's going on across the company; we have company wide discussions three times a year.  
  • Great Benefits: start with 20 days PTO, 10 holidays, 6% 401k match with immediate vesting, semi-annual bonuses, and eligibility to participate in our Employee Stock Ownership Plan (ESOP).  We offer other employee focused benefits, including up to $10k in annual tuition reimbursement and an optional zero dollar deductible BCBS health insurance plan.  As employee owners, the choice is simple to take care of people and each other.  
  • Track Record of Success:  We will celebrate 27 years in business in 2020.  We'll also be celebrating 27 years of consecutive growth.  

MTSI’s core capabilities are Systems Engineering and Integration, Modeling and Simulation, Test and Evaluation, Acquisition and Program Support, and Mission Assurance services.  Our expertise includes ballistic missile defense, air defense, air vehicle survivability, unmanned aircraft, flight test operations, intelligence support, and cyber/space/homeland defense.


For additional company information, please visit:


MTSI is actively seeking Junior and Mid-level Linux System Administrators to support our Army and Missile Defense Agency (MDA) customers in Huntsville, AL. Selected applicants will manage the functionality and efficiency of Linux servers and workstations.



  • Installation, configuration, maintenance and troubleshooting of RHEL based systems
  • Integrating network services such as: domain controllers, group policy, drive shares, data backup and account management for Linux systems
  • Maintaining Security Technical Implementation Guidelines (STIGs) compliance
  • Day to day support operations maintaining security patches on all RHEL based systems
  • Day to day support operations providing configuration updates to meet user requirements on all RHEL systems and services
  • Perform network cable and hardware installation, upgrades, replacement and maintenance
  • Responsible for generating and maintaining documentation fulfilling configuration management and RMF requirements


  • Bachelor’s degree in Information Systems or Computer Science is desired
  • 5+ Years’ experience as a System Administrator or similar role in Linux Environments
  • Demonstrate a disciplined approach to systems administration
  • Disciplined experience in developing system documentation
  • Self-motivated, possess strong oral and written communication skills, and have the ability work effectively in a fast-paced, dynamic, technically advanced team environment.

Highly Desirable Skills:

  • Experience with HBSS and MFA implementation
  • Experience with virtualization technology such as VMWare
  • Familiar with MS Windows System Administration
  • Familiar with large scale data storage
  • Prior SA experience in Tactical Hardware-in-the-Loop (HWIL) environments
  • Database server administration experience is a plus

Certification Requirements:

  • DoD 8570 IAT Level 2 Computing Environment (CE) Certification in an approved Linux discipline required and must be maintained.
  • CompTIA Security+ Certification required and must be maintained.

Clearance Requirements:

Current DoD SECRET clearance is REQUIRED


Please Note:  U.S. Citizenship is required for most MTSI positions.



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