1,380 senior linux systems administrator jobs at 616 companies in United States

1mo
Save
Mark Applied
Hide
Senior Linux Systems Administrator
Lexington, Massachusetts, United States
$115k-$152k/yr OnsiteFull Time
Massachusetts Institute of Technology
Massachusetts Institute of Technology: A private research university advancing knowledge in science and technology.
6+ YOEBS plus 6+ years Linux systems administration, experience with Ubuntu/RHEL, DISA STIGs and RMF, scripting (Bash/Python), automation (Ansible/Salt/Puppet), directory services and classified environment experience; ability to obtain DoD clearance.
Ubuntu, RHEL, Bash, Python, Ansible, Salt, Puppet, syslog, LDAP, Kerberos, SSSD, Active Directory, DNS, DHCP, NFS, SSH, Samba, RMF, DISA STIGs
5d
Save
Mark Applied
Hide
Linux Systems Administrator
New York City, New York, United States
$125k-$156k/yr OnsiteFull Time
Persistent Systems
Persistent Systems: US defense technology developing secure mobile networking systems for military, government, first responders, and commercial users.
6+ YOEBachelor's degree, 6+ years of systems administration experience, Linux administration, Bash or Python scripting, networking knowledge, configuration management familiarity, and US security clearance or ability to obtain one.
Linux, Bash, Python, UNIX, Ansible, LUKS, LVM, SELinux, AppArmor, Docker, Kubernetes
3mo
Save
Mark Applied
Hide
Linux Systems Administrator
Fort Meade, Maryland, United States
$128k-$214k/yr OnsiteFull Time
ManTech International
ManTech International: Advancing the future of defense through innovative technology.
10+ YOE10+ years systems administration experience with extensive Linux administration; experience with Ansible, VMware, SAN, NiFi, identity management; bachelor's in technical field (or associate plus more experience) required.
Ansible, NiFi, Keycloak, VMware, SAN, Docker, Kubernetes, SaltStack, Puppet, Python, Bash, Perl, TCP/IP, UDP, HTTP, DHCP, DNS, Active Directory
2mo
Save
Mark Applied
Hide
Linux Systems Administrator
Annapolis Junction or Virginia Beach
$87-$111/hr OnsiteFull Time
EverWatch Solutions
EverWatch Solutions: Private government-solutions delivering software, cybersecurity, analytics, and deployed mission support to U.S. defense and intelligence agencies.
10+ YOE10+ years with a bachelor's degree or 12+ years with a high school diploma/GED administering Linux systems; TS/SCI with polygraph, IAT II/III certification, and Linux security and automation experience required.
Linux, RHEL 8, RHEL 9, GitLab, Ansible, RHEL Subscription Manager, Nagios, CentOS, Jira, Security+, PKI
6d
Save
Mark Applied
Hide
Senior Linux Systems Administrator
Huntsville or Dayton or Albuquerque or Simi Valley or Sunrise or Herndon or Arlington or Germantown or Melbourne
$91k-$139k/yr OnsiteFull Time
AeroVironment
AeroVironmentNASDAQ: AVAV: Developer of unmanned aircraft systems and defense technologies.
8+ YOEBachelor's degree or equivalent experience; 8–12 years of IT infrastructure experience, including 6+ years administering enterprise Linux. Requires Ansible, Bash or Python, VMware, storage, security hardening, and U.S. person status.
Oracle Linux, Red Hat Enterprise Linux, Ubuntu, Canonical Landscape, VMware vSphere, OCI, AWS, Azure, Red Hat Satellite, Foreman, YubiKey, PKI, Smartcard, Duo, Okta PAM, NIST SP 800-171, CMMC 2.0, DISA STIG, CIS, SELinux, AppArmor, auditd, Ansible, Terraform, Puppet, Chef, Bash, Python, SAN, NAS, iSCSI, NFS, LVM, VMware ESXi, VMware vCenter, FlexLM, DNS, DHCP, LDAP, Kerberos, NTP, Prometheus, Grafana, Zabbix, Docker, Podman, Kubernetes, AWS GovCloud, Azure Government
1w
Save
Mark Applied
Hide
Linux Systems Administrator
Pittsburgh or Cranberry Township
OnsiteFull Time
All Lines Technology
All Lines Technology: The First Name in Fire Protection Since 1946.
Bachelor's degree, Red Hat Linux certification, and enterprise Linux administration experience supporting 100+ servers. Requires RHEL/OEL, OpenShift, troubleshooting, performance tuning, capacity planning, and shell scripting.
Red Hat Enterprise Linux (RHEL), Oracle Enterprise Linux (OEL), Red Hat OpenShift, VMware, Hyper-Converged Infrastructure (HCI), SAN, Commvault Backup, EMC Data Domain, Shell Scripting, Perl, Python, DNS, HTTP, LDAP, SMTP, SNMP
1w
Save
Mark Applied
Hide
Linux Systems Administrator
Pittsburgh or Cranberry Township
OnsiteFull Time
All Lines Technology
All Lines Technology: Woman-owned IT services firm providing managed IT, cybersecurity, cloud, Microsoft, AI, and staffing solutions to organizations.
Bachelor's degree, Red Hat Linux certification, and enterprise Linux administration experience supporting 100+ servers. Requires RHEL/OEL, OpenShift, troubleshooting, performance tuning, capacity planning, and shell scripting.
Red Hat Enterprise Linux (RHEL), Oracle Enterprise Linux (OEL), Red Hat OpenShift, VMware, Hyper-Converged Infrastructure (HCI), SAN, Commvault Backup, EMC Data Domain, Shell Scripting, Perl, Python, DNS, HTTP, LDAP, SMTP, SNMP
3w
Save
Mark Applied
Hide
Senior Linux Database Systems Administrator
Dahlgren, Virginia, United States
$55/hr OnsiteFull Time
The Tatitlek Corporation
The Tatitlek Corporation: Alaska Native providing diversified professional and technical services.
6+ YOE6+ years system administration experience with UNIX/Linux/Windows, DoD Secret clearance, IAT Level 2 and OS certification, ability to install/configure/maintain systems, create documentation, and perform backups.
UNIX, Linux, Windows, Redhat, Solaris, Thin Client, Sudo, IDM, NTFS, CIFS, DNS, RDP, WSUS, GPO, Windows Server, Windows Workstation
1mo
Save
Mark Applied
Hide
Linux Systems Administrator II
Fort Meade, Maryland, United States
$104k-$218k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
10+ YOEProficient with Linux (RHEL), 3+ years recent Linux admin, COMPTIA Security+, 10 years systems administrator experience or Bachelor\u0002s degree (or substitution), virtualization and patching experience.
Red Hat Enterprise Linux (RHEL), Dell, HPE, Juniper, Cisco, Palo Alto, Ansible, Nutanix, Rubrik, Nomad, SALT, LibreNMS, NetBox, AWS, Azure
2mo
Save
Mark Applied
Hide
Principal Linux Systems Administrator / Sr. Principal Linux Systems Administrator (AHT)
Redondo Beach, California, United States
$104k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Global aerospace and defense technology.
5+ YOELinux system administration (Red Hat), OS/hardware/network troubleshooting, RPM/package management, shell scripting, ability to obtain DoD Secret clearance, bachelors in CS or equivalent experience (5+ years).
Linux, Red Hat, RPM, VMware, shell scripting
1mo
Save
Mark Applied
Hide
Senior Linux Systems Administrator (DevOps)
Olathe, Kansas, United States
OnsiteFull Time
Garmin
GarminNYSE: GRMN: Global provider of navigation, communications, and information technology devices.
5+ YOEBachelor's degree or equivalent with 5+ years' relevant experience, scripting/automation skills, Linux systems administration, experience with Ansible/OpenStack/KVM, MySQL or networking knowledge, strong communication, and 24x7 on-call support.
Linux, Ansible, OpenStack, KVM, MySQL
3mo
Save
Mark Applied
Hide
Linux Systems Administrator
Annapolis Junction, Maryland, United States
$149k-$201k/yr OnsiteFull Time
General Dynamics Information Technology
General Dynamics Information TechnologyNew York Stock Exchange: GD: Provider of enterprise IT services and defense solutions.
10+ YOE10+ years of related experience; strong Linux/Windows, scripting, virtualization, AD/GP; networking; TS/SCI w/ Poly; US Citizenship; onsite work.
Linux, Windows, Scripting (Bash, PowerShell), Active Directory, Group Policy, TCP/IP, DNS, DHCP, VMware, KVM, Docker, Hyper-V, Zabbix, ELK, Splunk
2mo
Save
Mark Applied
Hide
Principal Linux Systems Administrator / Sr. Principal Linux Systems Administrator (AHT)
Redondo Beach, California, United States
$104k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Global aerospace and defense technology.
5+ YOEStrong Linux (Red Hat) system administration experience, OS/package management (RPM), shell scripting, hardware troubleshooting, ability to obtain DoD Secret clearance, bachelor's degree in CS or related (or equivalent experience).
Linux, Red Hat, VMware, RPM, Shell scripting
3mo
Save
Mark Applied
Hide
Linux Systems Administrator
Annapolis Junction, Maryland, United States
$149k-$201k/yr OnsiteFull Time
General Dynamics Information Technology
General Dynamics Information TechnologyNew York Stock Exchange: GD: Provider of enterprise IT services and defense solutions.
10+ YOE10+ years of related experience; TS/SCI w/ Poly; Linux and Windows; scripting; virtualization; AD/Group Policy; networking; monitoring/logging; security best practices.
Linux, Windows, Active Directory, Group Policy, Bash, PowerShell, VMware, KVM, Docker, Hyper-V, Splunk, Zabbix, ELK
2w
Save
Mark Applied
Hide
Linux Systems Administrator
Orlando, Florida, United States
$100k-$120k/yr OnsiteFull Time
AMERICAN SYSTEMS
AMERICAN SYSTEMS: Government services contractor delivering IT and engineering solutions.
5+ YOEBachelor's degree, 5+ years of systems administration experience, U.S. citizenship, active Secret clearance, Security+, RHEL, network interfaces, virtualization, hardware/software integration, and system verification experience.
Red Hat Enterprise Linux, Windows, QEMU, Hyper-V, VirtualBox
1mo
Save
Mark Applied
Hide
Linux Systems Administrator
Pearl Harbor, Hawaii, United States
OnsiteFull Time
C3EL
C3EL: Woman-owned U.S. systems integrator delivering engineering, IT, cybersecurity, communications, and logistics services to defense and federal agencies.
8+ YOEU.S. citizen with active Top Secret clearance, DoD-8570 IAT Level 2 (Security+ CE or equivalent), 8+ years Linux/Unix experience, VMware, cloud and scripting skills, and familiarity with DISA STIGs and SLAs.
Redhat Linux, Windows Server, VMware Vcenter, AWS, bash, Perl, BMC ITSM, DISA STIGS
1mo
Save
Mark Applied
Hide
Linux Systems Administrator
Laurel, Maryland, United States
$105k-$290k/yr OnsiteFull Time
Johns Hopkins Applied Physics Laboratory
Johns Hopkins Applied Physics Laboratory: University-affiliated research center serving national security and science.
5+ YOEBachelor's in CS/IT or equivalent experience,5+ years Linux admin,experience with classified networks,SELinux,firewalls,virtualization,containerization,backup/recovery,automation,DoD 8570 cert within 6 months,active TS/SCI w/poly required.
Red Hat, CentOS, Linux, SELinux, realm, adcli, sssd, Active Directory, VMware, KVM, Docker, Podman, Kubernetes, Gitlab, Confluence, Jira, Legato, Networker, NPE certificates, SSL/TLS, Nagios, Thruk, Salt-Stack, Puppet, Ansible, Chef, Slurm, Exchange, RSA, Radius
3w
Save
Mark Applied
Hide
Cleared Linux Systems Administrator
Albuquerque, New Mexico, United States
$90k-$150k/yr OnsiteFull Time
Space Dynamics Laboratory
Space Dynamics Laboratory: Nonprofit University Affiliated Research Center delivering mission engineering and technologies for defense, government, and scientific customers.
5+ YOERequires 5+ years and a related bachelor's degree or 10+ years in lieu, enterprise Linux and virtualization administration, Security+ CE or equivalent, and active or eligible Top Secret clearance.
Linux, RHEL 7/8/9, Ubuntu 22/24, VMware vSphere, Red Hat Virtualization (RHV), Microsoft Active Directory, FreeIPA, Elasticsearch, Logrhythm, Prometheus, Grafana, YUM, DNF, RPM, APT, Ansible, Puppet, Terraform, Docker, Podman, Jira, Postgres, MySQL, Apache, Nginx, Leostream/HP Anyware, VMware Horizon, Citrix, Nessus, SCAP, STIGs
1w
Save
Mark Applied
Hide
Senior Linux Systems Administrator - Kubernetes
Annapolis Junction, Maryland, United States
OnsiteFull Time
Quevera
Quevera: Veteran-owned custom software engineering firm serving government customers with mission-critical IT solutions.
10+ YOE10+ years Linux administration or engineering experience; active TS/SCI clearance with polygraph; Security+ certification; CentOS/RHEL, Kubernetes, container, and Bash experience required. Red Hat certification, Python, Ansible, Salt, and VMware preferred.
CentOS, RHEL, Kubernetes, Bash, Python, Ansible, Salt, VMware
1mo
Save
Mark Applied
Hide
Linux Systems Administrator (Temporary)
Beavercreek, Ohio, United States
$75k/yr OnsiteFull Time
Riverside Research Institute
Riverside Research Institute: Independent nonprofit R&D organization serving U.S. defense and intelligence communities with scientific and technical solutions.
5+ YOEAdminister enterprise Linux systems (RHEL, Rocky, Ubuntu), perform patching/hardening, automation with Ansible/Python/Bash, user management, troubleshooting, and security compliance; DoD 8140/CompTIA Security+ required; bachelor’s and 5+ years experience.
Red Hat Enterprise Linux (RHEL), Rocky Linux, Ubuntu, Bash, Python, Ansible, Active Directory, LDAP, VMware vSphere, SSH, SCP, TCP/IP, DNS, DHCP, ESXi, Git, Bitbucket, Bamboo, GitLab, CI/CD, STIGS, CIS Benchmarks