1,564 Linux jobs in the United States

ManTech seeks an experienced and passionate, career and customer-oriented 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:

• Bachelor’s degree in computer science or a related discipline
• 10+ years’ of experience in systems administration of hardware and software in support of developing and testing of information technology systems; an Associates degree and 5 additional years’ experience might be substituted for a degree.
• Heavy Windows and Linux administration experience
• Highly proficient with Active Directory
• Experience with virtualization
• Experience with PowerShell scripting
• Experience with Keycloak
• Experience using Ansible or comparable tools
• Experience with cross-domain solutions or NiFi
• 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 writing scripting languages (Bash, Shell, Python, Perl) 
• Experience with  working with a team to introduce and integrate new technologies into existing production environments 
• Experience 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   

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 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 an experienced and passionate, career and customer-oriented 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:

• Bachelor’s degree in computer science or a related discipline and 10 years related experience or an Associate’s degree in computer science or a related discipline and 15 years related experience.
• 10+ years’ experience in systems administration of hardware and software in support of developing and testing of information technology systems .
• Heavy Linux administration experience.
• Experience using Ansible or comparable tools.
• Experience with cross-domain solutions or NiFi.
• 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 is desirable.
• Experience writing scripting languages (Bash, Shell, Python, Perl). 
• Demonstrated experience working with a team to introduce and integrate new technologies into existing production environments. 
• 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.

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 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 Hanover, Maryland.

As a Linux Systems Administrator on our team, you will play a key role in directly supporting national security and our customer’s mission.

Responsibilities include, but are not limited to:  

• Develops and executes plans for new technologies to enhance security capabilities including, perimeter security protections, firewalls, proxies, load balancers, monitoring tools, and data analytics and analysis.

• Provide support for implementation, troubleshooting, and maintenance of IT systems.

• Provide Tier 1 problem identification, diagnosis, and resolution of problems.

• Provide day to day systems support including maintenance, monitoring, and problem resolution.

• Optimize system operations and resource utilization and perform system capacity analysis and planning.

Minimum Qualifications:  

• Bachelor’s Degree and 5+ years of experience with Linux system administration or 9+ years of experience without a degree.

• Experience with Kubernetes

• Experience with VMWare ESXi and/or VMWare NSX

• Security+ certification

Preferred Qualifications:  

• Experience with Elasticsearch and/or Kibana

• Experience with Subversion/GIT

• Knowledge of Atlassian Tools, such as Confluence, Jira, Bamboo, Crucible or similar

Security Clearance Requirements:  

• Active and current TS/SCI with Polygraph

Physical Requirements:  

• Must be able to remain in a stationary position 50% of the time

ManTech seeks an experienced and passionate, career and customer-oriented 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:

• Bachelor’s degree in computer science or a related discipline
• 10+ years’ of experience in systems administration of hardware and software in support of developing and testing of information technology systems; an Associates degree and 5 additional years’ experience might be substituted for a degree.
• Heavy Windows and Linux administration experience
• Highly proficient with Active Directory
• Experience with virtualization
• Experience with PowerShell scripting
• Experience with Keycloak
• Experience using Ansible or comparable tools
• Experience with cross-domain solutions or NiFi
• 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 writing scripting languages (Bash, Shell, Python, Perl) 
• Experience with  working with a team to introduce and integrate new technologies into existing production environments 
• Experience 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   

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 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 an experienced and passionate, career and customer-oriented 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:

• Bachelor’s degree in computer science or a related discipline and 10 years related experience or an Associate’s degree in computer science or a related discipline and 15 years related experience.
• 10+ years’ experience in systems administration of hardware and software in support of developing and testing of information technology systems .
• Heavy Linux administration experience.
• Experience using Ansible or comparable tools.
• Experience with cross-domain solutions or NiFi.
• 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 is desirable.
• Experience writing scripting languages (Bash, Shell, Python, Perl). 
• Demonstrated experience working with a team to introduce and integrate new technologies into existing production environments. 
• 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.

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 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.