Linux System Administrator

Radiance Technologies, Inc.

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Stennis Space Center, MS Until 9/14/2026 2+ years exp H-1B sponsor history First posted July 16, 2026 Last posted July 16, 2026
Job description

Radiance Technologies is an employee-owned company with benefits that are unmatched by most companies. Employee ownership, generous 401K and profit sharing, health/dental/life/vision insurance benefits, interesting assignments, educational reimbursement, competitive salaries, and a pleasant work environment combine to make Radiance Technologies a great place to work and succeed. 

 

The System Administrator will advance the capabilities of the Commander Naval Meteorology and Oceanography Command (CNMOC) by providing maintenance support for software and operational systems.  CNMOC is located at NASA’s Stennis Space Center and the work would be performed in CNMOC’s spaces.  The Systems Administrator will be responsible for the proper function of Linux servers on a classified network.  The Administrator will work with other administrators to secure and maintain systems, with software developers to incorporate custom software onto operational networks, and with network users to troubleshoot issues. 

 

Job Duties: 

  • Linux OS operation and administration including cron deployments, software installations, file system maintenance, user/group administration  

  • Perform troubleshooting as issues are reported through formal trouble ticketing  

  • Maintain and upgrade operating systems; Perform installations and patches of operating system(s)  

  • Perform installations and patches of custom developed software modules  

  • Maintain a virtualized environment with high availability  

  • Coordinate with network administrators to optimize system performance  

  • The contractor shall conduct system administration tasks following DoD, DoN, and NAVOCEANO policies, processes and guidelines 

 

Required Experience: 

  • Bachelor’s Degree in Information Technology, Computer Science or relevant technical field 

  • 2+ years of experience as a Linux System Administrator performing patching and configuring systems 

  • 3 years of experience as systems administrator or software developer 

  • Strong communication skills 

  • Active Secret Clearance with SSBI (Tier 5 investigation)

Additional consideration for: 

  • CompTIA Security+ certification 

  • CompTIA Linux+ certification 

  • Experience with RDBMS such as PostgreSQL and Oracle  

  • Experience with VMWare products (VSphere, ESXi) to perform basic administration of systems 

  • Experience with mass storage systems (NetApp) 

  • Experience administering user accounts and permissions in both Linux and Windows environments (LDAP) 

  • Experience with Server administration to include troubleshooting of a system and routing system patching 

  • Understanding of the DoW STIG application process 

  • Understanding of the DoW Risk Management Framework (RMF) 

  • Experience with ESRI Products like ESRI Enterprise and ESRI Portal 

Radiance Technologies is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.

About this role

Summary

Maintain and troubleshoot Linux servers, support software systems, ensure security and high availability.

Job title

Linux System Administrator

Experience level

2+ years

Minimum experience

2+ years exp

Industry

defense

Location requirements

On-site at Stennis Space Center, MS, with required security clearance

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

Linux OS operationcronsoftware installationfile system maintenanceuser/group administrationtroubleshootingsystem upgradepatchingcustom softwarevirtualizationsystem security

Preferred skills

Security+Linux+PostgreSQLOracleVMwareVSphereESXiNetAppLDAProuting troubleshootingSTIGRMFESRI

Specializations

Linuxsystem administrationsecurity
Locations

Structured locations inferred from the posting.

John C. Stennis Space Center, MS, USA

On-site City