2,930 Linux System Administrator jobs in the United States

MANTECH seeks a motivated, career and customer-oriented Linux Systems Administrator to join our team in San Antonio, TX supporting the Linux Orchestration Services (LOS) team which is the standard of excellence for all things Linux within the agency . 

The team delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense of our Nation.

Responsibilities include, but are not limited to:

• Provides support for implementation, troubleshooting and maintenance of Cloud Infrastructure Services hosted in multiple cloud environments.
• Provides Tier I/II and Tier III (Escalation to Architecture Team) resolution of customer capacity requests. Provides support for the escalation and communication of status to management and internal customers.
• Provides connectivity and utilization support to Cloud Infrastructure Services managed cloud environment customers.
• Provides customer support through chat, email, and capacity request ticketing.
• Responsible for deployment of new solutions into existing cloud resources on or off-premise infrastructure.

 Minimum Qualifications:

• Bachelor’s degree in a technical discipline from an accredited college or university. 5 years of additional related experience might be substituted for a degree.
• 10+ years’ experience as a Linux System Administrator with a strong knowledge of Red Hat 8 & 9
• Must possess strong knowledge of a wide range of cloud services and solutions, such as AWS.
• Experience with Ansible Automation Platform (AAP), Red Hat Satellite and Red Hat Image Builder.
• IAT II certification (DoD 8140 required within 60 days of starting employment.  Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

• Red Hat Certified Engineer (RHCE) Certificate.
• Experience with installing, configuring and maintaining Rocky Linux or Red Hat 10, Amazon Linux 2023
• Microsoft Azure products, VMWare (VSphere), OpenStack
• Experience/Knowledge of Virtual Desktop deployment and configuration automation.
• Knowledge in writing, configuring, and deploying Ansible Playbooks.
• Strong knowledge in writing and implementing other scripting languages like Python and Bash Scripting.
• Expertise in managing and arranging JIRA projects, backlogs, sprints.
• Expertise using Git commands (GitLab/GitHub) to manage/push/pull projects and implement file version controls.

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication

Mantech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. 

You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organization—the foundation of all Enterprise Information Technology (EIT) for MPO.
  

Responsibilities include but are not limited to:

• Configure and manage Linux operating systems. Installs/loads operating system software, troubleshoots maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance.
• Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems.
• Manage IT system infrastructure and any processes related to these systems.
• Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc.
• Provide support for the dispatch system and hardware problems and will remain involved in the resolution process.
• Optimize system operations and resource utilization and perform system capacity analysis and planning.
• Analyze and resolve complex problems associated with server hardware, applications and software integration.

Minimum Qualifications:

• Bachelor’s degree in a technical discipline from an accredited college or university with 12+ years of experience as a System Engineer supporting programs and contracts of similar scope, type, and complexity. 3 years of additional experience with an associate’s degree might be substituted OR 8 years of additional experience and a high school diploma
• Must be proficient with troubleshooting in a Linux Red Hat environment.
• Experience with VMWare
• Demonstrated experience with modern automation/configuration tools such as Splunk or Ansible
• IAT II certification (DoD 8140 required within 60 days of starting employment.  Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

• Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching.
• Red Hat Certified System Administration Certification.
• Experience with NetAPP

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication.

Mantech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. 

You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organization—the foundation of all Enterprise Information Technology (EIT) for MPO.
  

Responsibilities include but are not limited to:

• Configure and manage Linux operating systems. Installs/loads operating system software, troubleshoots maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance.
• Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems.
• Manage IT system infrastructure and any processes related to these systems.
• Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc.
• Provide support for the dispatch system and hardware problems and will remain involved in the resolution process.
• Optimize system operations and resource utilization and perform system capacity analysis and planning.
• Analyze and resolve complex problems associated with server hardware, applications and software integration.

Minimum Qualifications:

• Bachelor’s degree in a technical discipline from an accredited college or university. 5 years of additional related experience might be substituted for a degree.
• 10+ years of experience as a System Administrator or related experience in programs and contracts of similar scope, type, and complexity.
• Must be proficient with troubleshooting in a Linux Red Hat environment.
• Experience with VMWare
• Demonstrated experience with modern automation/configuration tools such as Splunk or Ansible
• IAT II certification (DoD 8140 required within 60 days of starting employment.  Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

• Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching.
• Red Hat Certified System Administration Certification.
• Experience with NetAPP

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication.

Mantech seeks a motivated, career and customer-oriented Linux Systems Administrator to join our team in San Antonio, TX supporting the Linux Orchestration Services (LOS) team which is the standard of excellence for all things Linux within the agency . 

The team delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense of our Nation.

Responsibilities include, but are not limited to:

• Provides support for implementation, troubleshooting and maintenance of Cloud Infrastructure Services hosted in multiple cloud environments.
• Provides Tier I/II and Tier III (Escalation to Architecture Team) resolution of customer capacity requests. Provides support for the escalation and communication of status to management and internal customers.
• Provides connectivity and utilization support to Cloud Infrastructure Services managed cloud environment customers.
• Provides customer support through chat, email, and capacity request ticketing.
• Responsible for deployment of new solutions into existing cloud resources on or off-premise infrastructure.

 Minimum Qualifications:

• Bachelor’s degree in a technical discipline from an accredited college or university. 5 years of additional related experience might be substituted for a degree.
• 10+ years’ experience as a Linux System Administrator with a strong knowledge of Red Hat 8 & 9
• Must possess strong knowledge of a wide range of cloud services and solutions, such as AWS.
• Experience with Ansible Automation Platform (AAP), Red Hat Satellite and Red Hat Image Builder.
• IAT II certification (DoD 8140 required within 60 days of starting employment.  Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

• Red Hat Certified Engineer (RHCE) Certificate.
• Experience with installing, configuring and maintaining Rocky Linux or Red Hat 10, Amazon Linux 2023
• Microsoft Azure products, VMWare (VSphere), OpenStack
• Experience/Knowledge of Virtual Desktop deployment and configuration automation.
• Knowledge in writing, configuring, and deploying Ansible Playbooks.
• Strong knowledge in writing and implementing other scripting languages like Python and Bash Scripting.
• Expertise in managing and arranging JIRA projects, backlogs, sprints.
• Expertise using Git commands (GitLab/GitHub) to manage/push/pull projects and implement file version controls.

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication

Mantech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in San Antonio, Texas. 

You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organization—the foundation of all Enterprise Information Technology (EIT) for MPO.
  

Responsibilities include but are not limited to:

• Configure and manage Linux operating systems. Installs/loads operating system software, troubleshoots maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance.
• Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems.
• Manage IT system infrastructure and any processes related to these systems.
• Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc.
• Provide support for the dispatch system and hardware problems and will remain involved in the resolution process.
• Optimize system operations and resource utilization and perform system capacity analysis and planning.
• Analyze and resolve complex problems associated with server hardware, applications and software integration.

Minimum Qualifications:

• Bachelor’s degree in a technical discipline from an accredited college or university. 5 years of additional related experience might be substituted for a degree.
• 10+ years of experience as a System Administrator or related experience in programs and contracts of similar scope, type, and complexity.
• Must be proficient with troubleshooting in a Linux Red Hat environment.
• Experience with VMWare
• Demonstrated experience with modern automation/configuration tools such as Splunk or Ansible
• IAT II certification (DoD 8140 required within 60 days of starting employment.  Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

• Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching.
• Red Hat Certified System Administration Certification.
• Experience with NetAPP

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication.

ManTech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in the Laurel, Maryland location.
 

Responsibilities include, but are not limited to:

• Design, deploy and administer virtualized platforms, using VMWare.
• Configure and manage Linux and Solaris operating systems
• Installs/loads operating systems software
• Troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
• Build, install and configure infrastructure related software.
• The ability to troubleshoot higher-level problems and resolve complex technical issues where documentation is either lacking or non-existent.
• Analyze and resolve complex problems associated with server hardware, applications, and software integration. 

 Minimum Qualifications:

• Shall have a minimum of twelve (12) years’ experience as a SA in programs and contracts of similar scope, type, and complexity is required.
• A Bachelor’s degree from an accredited college or university in technical discipline is required. Additional five years of experience may be substituted for degree.

 Preferred Qualifications:

• Fifteen (15) years of relevant experience
• Experience in implementing solutions with PKI-controlled access is desired.
• Understanding networking components is desired.

Clearance Requirements:

• Current/Active TS/SCI with Polygraph  

Physical Requirements:

• Bending, carrying, kneeling, lifting, light work up to 20 lbs., reaching, repetitive motions, sedentary work, walking, working with data, ability to handle stress & work under pressure, ability to use MS Office, ability to use a PC, analytical or critical thinking skills, interpersonal & people skills, leadership skills, listening skills, multi-tasking ability, oral & written communication skills, organizational skills.

ManTech seeks an experienced and passionate, career and customer-oriented Linux System Administrator to join our team located in the Fort Meade, MD area.

Responsibilities include, but are not limited to:

• Design, engineer, and implement automated hardening scripts for internal servers adding scalability while circumventing manual process for new operating system rollout.
• Configure host-based intrusion detection systems.
• Monitor and troubleshoot/examine detected anomalies.
• Developed automation script adding new servers to IPA replacing human error and manual process
• Analyze system and security logs while responding to discovered real time events providing SOC status updates.
• Engineer ansible script automating creation of user accounts in IPA replacing manual process
• Review audits confirming hardening script successfully executed while checking for other vulnerabilities and/or configuration errors.
• Host design and review meetings providing security insight, team updates, goals, projections to branch management.

Minimum Qualifications:

• 7 year’s experience in systems administration of hardware and software in support of developing and testing of information technology systems 
• Experience with Linux administration
• Experience using Ansible or comparable tools
• Experience working with a team to introduce and integrate new technologies into existing production environments 
• Experience with integrated processing environments such as a Storage Area Network  

Preferred Qualifications:

• Experience with DevOps tools such as Docker, Kubernetes, SALT, Puppet desirable 
• Experience with cross-domain solutions or NiFi desirable for some positions 
• Experience writing scripting languages (Bash, Shell, Python, Perl) 
• Proficiency in working with applicable network devices to include routers and switches, gateways and hubs 
• Experience with computer networking protocols including, but not limited to TCP, IP, UDP, HTTP, DHCP, and DNS   
• Ability to handle stress and work under pressure
• Competence in computer operating systems

Clearance Requirement:

• Must have a current/active TS/SCI with Poly

Physical Requirements:

• Must be able to remain in a stationary position at least 50% of the time.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Constantly operate a computer and other office productivity machinery, such as, the copy machine/fax machine/computer/printer.

Mantech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in San Antonio, Texas. 

You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organization—the foundation of all Enterprise Information Technology (EIT) for MPO.
  

Responsibilities include but are not limited to:

• Configure and manage Linux operating systems. Installs/loads operating system software, troubleshoots maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance.
• Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems.
• Manage IT system infrastructure and any processes related to these systems.
• Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc.
• Provide support for the dispatch system and hardware problems and will remain involved in the resolution process.
• Optimize system operations and resource utilization and perform system capacity analysis and planning.
• Analyze and resolve complex problems associated with server hardware, applications and software integration.

Minimum Qualifications:

• Bachelor’s degree in a technical discipline from an accredited college or university. 5 years of additional related experience might be substituted for a degree.
• 10+ years of experience as a System Administrator or related experience in programs and contracts of similar scope, type, and complexity.
• Must be proficient with troubleshooting in a Linux Red Hat environment.
• Experience with VMWare
• Demonstrated experience with modern automation/configuration tools such as Splunk or Ansible
• IAT II certification (DoD 8140 required within 60 days of starting employment.  Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

• Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching.
• Red Hat Certified System Administration Certification.
• Experience with NetAPP

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication.

Mantech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. 

You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organization—the foundation of all Enterprise Information Technology (EIT) for MPO.
  

Responsibilities include but are not limited to:

• Configure and manage Linux operating systems. Installs/loads operating system software, troubleshoots maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance.
• Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems.
• Manage IT system infrastructure and any processes related to these systems.
• Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc.
• Provide support for the dispatch system and hardware problems and will remain involved in the resolution process.
• Optimize system operations and resource utilization and perform system capacity analysis and planning.
• Analyze and resolve complex problems associated with server hardware, applications and software integration.

Minimum Qualifications:

• Bachelor’s degree in a technical discipline from an accredited college or university with 12+ years of experience as a System Engineer supporting programs and contracts of similar scope, type, and complexity. 3 years of additional experience with an associate’s degree might be substituted OR 8 years of additional experience and a high school diploma
• Must be proficient with troubleshooting in a Linux Red Hat environment.
• Experience with VMWare
• Demonstrated experience with modern automation/configuration tools such as Splunk or Ansible
• IAT II certification (DoD 8140 required within 60 days of starting employment.  Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

• Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching.
• Red Hat Certified System Administration Certification.
• Experience with NetAPP

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication.