This position requires an active Secret clearance and Security+ certification. Required Qualifications Minimum 4 years of hands-on Linux Systems Administration experience Active DoD Secret Security ...
This position requires an active Secret clearance and Security+ certification. Required Qualifications Minimum 4 years of hands-on Linux Systems Administration experience Active DoD Secret Security ...
Job Title: (Linux Administrator) Sr. Specialist, Systems Administration Job Code: 42157 Job ... CompTIA Security+, CISSP or any DoD 8140 approved certification * Ability to function independently ...
Posted today
Job Title: (Linux Administrator) Sr. Specialist, Systems Administration Job Code: 42157 Job ... CompTIA Security+, CISSP or any DoD 8140 approved certification * Ability to function independently ...
Posted today
Job Title: (Linux Administrator) Sr. Specialist, Systems Administration Job Code: 42157 Job ... CompTIA Security+, CISSP or any DoD 8140 approved certification * Ability to function independently ...
New
Job Title: (Linux Administrator) Sr. Specialist, Systems Administration Job Code: 42157 Job ... CompTIA Security+, CISSP or any DoD 8140 approved certification * Ability to function independently ...
New
Software Engineer Lead - Data and Automation - Enterprise Payments (Java Springboot, Linux, CI/CD)
Ponca City, OK · On-site
$67K - $172K/yr
... Linux, Process Improvements, Release Management, Software Solutions, Spring Boot, User Experience ... Certifications are often desired. In lieu of a degree, a comparable combination of education, job ...
Software Engineer Lead - Data and Automation - Enterprise Payments (Java Springboot, Linux, CI/CD)
Ponca City, OK · On-site
$67K - $172K/yr
... Linux, Process Improvements, Release Management, Software Solutions, Spring Boot, User Experience ... Certifications are often desired. In lieu of a degree, a comparable combination of education, job ...
... Linux operating system (e.g., Red Hat Linux or Scientific Linux). - Find packages to implement ... certification when necessitated by individual projects. #TechnicalCrossCuttingJobs ...
... Linux operating system (e.g., Red Hat Linux or Scientific Linux). - Find packages to implement ... certification when necessitated by individual projects. #TechnicalCrossCuttingJobs ...
Must have a Unix-based Operating System certification (e.g., RHCSA, RHCE, RHCA, CompTIA Linux+, GIAC Certified Unix Security Administrator, Oracle Solaris System Administrator Certified Professional ...
Must have a Unix-based Operating System certification (e.g., RHCSA, RHCE, RHCA, CompTIA Linux+, GIAC Certified Unix Security Administrator, Oracle Solaris System Administrator Certified Professional ...
System Administrator AS6500
Stillwater, OK · On-site
$52K - $78K/yr
Certifications, Registrations, and/or Licenses: Must be eligible for employment in areas governed ... Three plus years of Windows, Linux & VMware Administration. Engage in a Program of Continuous ...
System Administrator AS6500
Stillwater, OK · On-site
$52K - $78K/yr
Certifications, Registrations, and/or Licenses: Must be eligible for employment in areas governed ... Three plus years of Windows, Linux & VMware Administration. Engage in a Program of Continuous ...
Must have a Unix-based Operating System certification (e.g., RHCSA, RHCE, RHCA, CompTIA Linux+, GIAC Certified Unix Security Administrator, Oracle Solaris System Administrator Certified Professional ...
Must have a Unix-based Operating System certification (e.g., RHCSA, RHCE, RHCA, CompTIA Linux+, GIAC Certified Unix Security Administrator, Oracle Solaris System Administrator Certified Professional ...
System Administrator AS6500
$52K - $78K/yr
Certifications, Registrations, and/or Licenses: Must be eligible for employment in areas governed ... Three plus years of Windows, Linux & VMware Administration. Engage in a Program of Continuous ...
System Administrator AS6500
$52K - $78K/yr
Certifications, Registrations, and/or Licenses: Must be eligible for employment in areas governed ... Three plus years of Windows, Linux & VMware Administration. Engage in a Program of Continuous ...
This includes command-line operations in a Linux or Unix operating system (e.g., Red Hat Linux or ... certification when necessitated by individual projects. #TechnicalCrossCuttingJobs ...
This includes command-line operations in a Linux or Unix operating system (e.g., Red Hat Linux or ... certification when necessitated by individual projects. #TechnicalCrossCuttingJobs ...
Contract Mission Command Systems Integrator
Fort Sill, OK · On-site
$50K - $100K/yr
The contractor is responsible for any certifications and related costs or expenses. * One year of experience using the most recent versions of Microsoft amp; LINUX Operating Systems (e.g., Win 7/10 ...
Contract Mission Command Systems Integrator
Fort Sill, OK · On-site
$50K - $100K/yr
The contractor is responsible for any certifications and related costs or expenses. * One year of experience using the most recent versions of Microsoft amp; LINUX Operating Systems (e.g., Win 7/10 ...
Embedded Software Engineer, Bluetooth & Wi-Fi
Oklahoma City, OK · On-site
$113K - $148K/yr
Bring up and test hardware components within Embedded Linux * Test, debug, and validate firmware/software on bench, HIL, and in vehicle. * Support FCC certification of Canoo vehicles * Review ...
Embedded Software Engineer, Bluetooth & Wi-Fi
Oklahoma City, OK · On-site
$113K - $148K/yr
Bring up and test hardware components within Embedded Linux * Test, debug, and validate firmware/software on bench, HIL, and in vehicle. * Support FCC certification of Canoo vehicles * Review ...
Software Engineer-DevOps 4
Oklahoma City, OK · On-site
$88 - $90/hr
Generate certification artifacts and safety documentation to meet regulatory and compliance ... Develop and maintain scripts for automation in both Windows and Linux environments. Set up and ...
Quick apply
Software Engineer-DevOps 4
Oklahoma City, OK · On-site
$88 - $90/hr
Generate certification artifacts and safety documentation to meet regulatory and compliance ... Develop and maintain scripts for automation in both Windows and Linux environments. Set up and ...
Infra Project Manager Prague
Prague, OK · On-site
... Unix/Linux Platforms • VMware Virtualization • Storage Platforms • Backup & Recovery ... Certification • Azure Fundamentals / Administrator • AWS Cloud Practitioner • VMware ...
New
Infra Project Manager Prague
Prague, OK · On-site
... Unix/Linux Platforms • VMware Virtualization • Storage Platforms • Backup & Recovery ... Certification • Azure Fundamentals / Administrator • AWS Cloud Practitioner • VMware ...
New
Active CAPM certification or obtain within 12 months of hire * RMF ATO Process experience. * Experience in mixed Windows/Linux enterprise environments. * The ability to travel up to 10%. Additional ...
New
Active CAPM certification or obtain within 12 months of hire * RMF ATO Process experience. * Experience in mixed Windows/Linux enterprise environments. * The ability to travel up to 10%. Additional ...
New
Workforce Development Adjunct
Midwest City, OK · On-site
$55/hr
... related certification preparation and credentialing as part of our commitment to the local ... Linux system administration and operating system * Web Development, graphic design * Art: painting ...
Workforce Development Adjunct
Midwest City, OK · On-site
$55/hr
... related certification preparation and credentialing as part of our commitment to the local ... Linux system administration and operating system * Web Development, graphic design * Art: painting ...
Workforce Development Adjunct
Midwest City, OK · On-site
$55/hr
... related certification preparation and credentialing as part of our commitment to the local ... Linux system administration and operating system * Web Development, graphic design * Art: painting ...
Workforce Development Adjunct
Midwest City, OK · On-site
$55/hr
... related certification preparation and credentialing as part of our commitment to the local ... Linux system administration and operating system * Web Development, graphic design * Art: painting ...
... related certification preparation and credentialing as part of our commitment to the local ... Linux system administration and operating system * Web Development, graphic design * Art: painting ...
Quick apply
... related certification preparation and credentialing as part of our commitment to the local ... Linux system administration and operating system * Web Development, graphic design * Art: painting ...
Cybersecurity Engineer
Oklahoma City, OK · On-site
$90K - $189K/yr
Strong Linux experience focused on protecting networks, devices, programs, and data * Working ... certifications. Our employees value the flexibility at CACI that allows them to balance quality ...
Cybersecurity Engineer
Oklahoma City, OK · On-site
$90K - $189K/yr
Strong Linux experience focused on protecting networks, devices, programs, and data * Working ... certifications. Our employees value the flexibility at CACI that allows them to balance quality ...
Research Scientist GS9392
Tulsa, OK · On-site
Certifications, Registrations, and/or Licenses: * Skills, Proficiencies, and/or Knowledge: * Familiarity with Unix/Linux environments
Research Scientist GS9392
Tulsa, OK · On-site
Certifications, Registrations, and/or Licenses: * Skills, Proficiencies, and/or Knowledge: * Familiarity with Unix/Linux environments
Linux Certified information
What is a Linux Certified professional?
What are some common challenges faced by Linux Certified professionals in a collaborative IT environment?
What is the difference between Linux Certified vs Linux System Administrator?
| Criteria | Linux Certified | Linux System Administrator |
|---|---|---|
| Certifications | Linux certifications like LPIC, CompTIA Linux+ | Often requires Linux certifications plus experience |
| Work Environment | Data centers, IT departments, server farms | Same as Linux Certified, with additional focus on system management |
| Employer & Industry Usage | Tech companies, hosting providers, enterprise IT | Same as Linux Certified, with more operational responsibilities |
| Search & Comparison Intent | Understanding certification benefits, career paths | Job roles, responsibilities, and qualifications |
Linux Certified professionals focus on obtaining certifications to validate their skills, often working in data centers and IT environments. Linux System Administrators typically have certifications plus hands-on experience managing Linux systems. Both roles are vital in tech and enterprise sectors, with overlapping environments and employer types. The main difference lies in the emphasis on certification versus practical system management responsibilities.
What are the key skills and qualifications needed to thrive as a Linux Certified professional, and why are they important?

Linux Systems Administrator (3rd shift) with Security Clearance
Oklahoma City, OK • On-site
Other
Re-posted 25 days ago
Job description
Client: Defense Information Systems Agency (DISA)
Employment Type: Full-Time
Work Schedule: Hybrid (1–2 days onsite per week)
Security Clearance: Active DoD Secret Clearance Required
Shift timings: Monday-Friday (11:00 pm -7:00 am) Locations: Oklahoma City, Oklahoma
Mechanicsburg
Ogden, Utah
Montgomery, Alabama Position Overview We are seeking an experienced Linux Systems Administrator to support mission-critical infrastructure and enterprise services for DISA. The ideal candidate will have a strong background in Linux administration, systems maintenance, troubleshooting, automation, security compliance, and enterprise operations within a DoD environment. This position requires an active Secret clearance and Security+ certification. Required Qualifications
Minimum 4 years of hands-on Linux Systems Administration experience
Active DoD Secret Security Clearance
Current CompTIA Security+ certification (IAT Level II compliant)
Experience administering enterprise Linux environments such as:
Red Hat Enterprise Linux (RHEL)
Rocky Linux
CentOS
Oracle Linux
Strong understanding of:
Linux operating systems and kernel fundamentals
User, group, and permission management
File systems, storage, and volume management
Networking concepts (TCP/IP, DNS, DHCP, routing, firewalls)
System monitoring and performance tuning
Experience with scripting and automation using:
Bash
Python
Ansible
Familiarity with STIG implementation and compliance requirements
Experience with patch management, vulnerability remediation, and system hardening
Ability to troubleshoot complex system and application issues
About 22nd Century Technologies
Sourced by ZipRecruiter
Industry
It services
Company size
5,001 - 10,000 Employees
Headquarters location
McLean, VA, US