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2,414 linux system administrator jobs at 1,035 companies in United States

4w
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Linux System Administrator
San Antonio, Texas, United States
$110k-$190k/yr OnsiteFull Time
Set of X
Set of X: Private engineering-services providing software and technical support to U.S. government customers.
10+ YOE10+ years system administration experience, Linux administration, enterprise infrastructure support, strong troubleshooting and communication, ability to work independently in mission-focused environments, TS/SCI with polygraph required.
Linux
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3mo
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Linux System Administrator
Annapolis Junction or Columbia
$101k-$129k/yr OnsiteFull Time
Intelliforce-IT Solutions Group
Intelliforce-IT Solutions Group: Woman-owned Maryland IT contractor providing software engineering, systems engineering, cybersecurity, and data solutions to federal intelligence customers.
5+ YOETop Secret clearance with polygraph; US citizenship; 5+ years Linux system administration; IAT Level 1; on-call required; Bachelor's not required.
Linux, Bulk data transport, Messaging, Data flow administration
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2mo
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Linux System Administrator
National Harbor, Maryland, United States
$104k-$218k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
7+ YOEU.S. citizenship required; minimum 7 years Linux system administration experience; experience with DISA STIGs/CIS Benchmarks, security hardening, vulnerability remediation, LDAP/PAM/ICAM, and Linux logging/monitoring. FEMA/DHS suitability preferred.
Linux, DISA STIGs, CIS Benchmarks, LDAP, PAM, ICAM, bash, python, Ansible, Puppet, Chef, AWS, Azure
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6d
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Linux System Administrator
Arlington, Virginia, United States
$99k-$206k/yr OnsiteFull Time
Nightwing
Nightwing: Advanced cyber, intelligence, and systems integration services for national security.
5+ YOE5+ years of Linux systems administration experience, 2+ years of MacOS and iOS experience, U.S. citizenship, active DoD Secret clearance, and BS degree or HS diploma with 7+ years of relevant experience.
Windows, MacOS, Linux/Unix, Red Hat, Red Hat OpenShift, Red Hat Ansible, Docker, Kubernetes, Podman, Red Hat Ansible Tower, Red Hat Satellite, iOS
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3mo
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Linux System Administrator
Annapolis Junction, Maryland, United States
$130k-$150k/yr OnsiteFull Time
Red Arch Solutions
Red Arch Solutions: U.S. small-business provider of data modernization, cybersecurity, and cloud solutions for Defense and Intelligence Community customers.
3+ YOE3+ years of hands-on Linux administration (RHEL/CentOS or similar), IBM Enterprise Storage, Veritas NetBackup, Nessus, YUM, system hardening, patching, scripting.
IBM Enterprise Storage, Veritas NetBackup, Nessus, YUM, NSF security frameworks
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5d
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Senior Linux System Administrator
Fort Meade, Maryland, United States
$128k-$214k/yr OnsiteFull Time
ManTech International
ManTech International: Advancing the future of defense through innovative technology.
20+ YOEBachelor's degree in a technical discipline or equivalent experience, 20+ years in systems administration or IT operations, Linux administration experience, and active TS/SCI with Polygraph clearance.
Linux, Windows
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1mo
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Linux System Administrator
College Park, Maryland, United States
$70k-$130k/yr HybridFull Time
Dark Wolf Solutions
Dark Wolf Solutions: Private IT consultancy delivering cybersecurity, software, cloud, data, and mission-engineering services to defense and intelligence customers.
3+ YOE3+ years Linux, endpoint, and VMware administration; CKA certification; US citizenship with active Secret clearance; HS diploma required; scripting and cloud-native experience preferred.
Red Hat Enterprise Linux, RHEL, Ubuntu, VMware vSphere, vCenter, ESXi, Kubernetes, Cloud Native Computing Foundation (CNCF), Bash, Python, Terraform, Ansible, Splunk, Elasticsearch, GitLab, GitHub, Bitbucket
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4d
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Linux System Administrator
Washington, District of Columbia, United States
$104k-$218k/yr HybridFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
7+ YOEU.S. citizenship, 7+ years of Linux administration, and expertise in DISA STIGs, CIS Benchmarks, security hardening, vulnerability remediation, firewalls, LDAP, PAM, identity management, logging, and auditing.
Linux, DISA STIGs, CIS Benchmarks, LDAP, PAM, VXRails, Zscaler, bash, Python, Ansible, Puppet, Chef, AWS, Azure
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3mo
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Linux System Administrator
Annapolis Junction, Maryland, United States
OnsiteFull Time
CDIT
CDIT: HUBZone-certified small disadvantaged IT and management services serving defense, health, civil, and intelligence agencies.
3+ YOEExperienced Linux administrator with storage, backup, security, and patching expertise in enterprise environments.
IBM Enterprise Storage, Veritas NetBackup, Nessus, YUM, Bash, Python
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1mo
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Linux System Administrator
Chantilly or McLean
$120k-$160k/yr OnsiteFull Time
Altamira Technologies
Altamira Technologies: Altamira is a defense contractor serving U.S. national-security customers with analytics, engineering, and cyber operations.
Experienced Linux system administrator for CDS sustainment: virtualization, Ansible automation, Git, Docker, Python/Bash scripting, SNMP/monitoring, patching, incident response; TS/SCI with CI poly required.
Red Hat Linux 7/8/9, Ansible, Git, Docker, Python, Bash, VMWare ESXi, ProxMox, SNMP, Cross Domain Solution (CDS)
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1w
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Linux System Administrator
Monterey or Stennis Space Center
OnsiteFull Time
LATG Federal
LATG Federal: Women-owned IT services firm delivering managed services, cybersecurity, systems engineering, and technology solutions to government clients.
3+ YOERequires a bachelor's degree in computer science or CompTIA Security+, Red Hat Enterprise Linux training, 3 years of Red Hat administration experience, Apache NiFi knowledge, and TS/SCI eligibility.
Red Hat Enterprise Linux, Apache NiFi, Linux, JWICS
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1w
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Linux System Administrator
West Chester, Ohio, United States
OnsiteFull Time
3dB Labs
3dB Labs: Radio-frequency signal processing and spectrum analysis serving government agencies, allied governments, and commercial customers.
8+ YOERequires 8–15 years of Linux IT experience, an associate or bachelor's degree in IT or computer systems, expertise in Rocky, CentOS, RHEL, and Ubuntu, and eligibility for a U.S. Top Secret clearance.
Linux, Rocky, CentOS, RHEL, Ubuntu, Exchange, Microsoft OneDrive, Microsoft Intune, JIRA, NinjaOne, GitLab, Mattermost, WiFi, VPN, VMware ESXi, SCEPTRE
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3w
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HPC Linux System Administrator
Houston, Texas, United States
OnsiteFull Time
MRI Technologies
MRI Technologies: Woman-owned aerospace engineering building hardware, software, and mission systems for NASA and government partners.
5+ YOE5+ years experience, Linux and HPC system administration, HPC job scheduler and parallel filesystem administration, container-based HPC workflows, CI/CD and configuration management experience.
Linux, RedHat, Lustre, GPFS, SLURM, Docker, Podman, Apptainer, Ansible, Foreman, SPACK, Git, GitLab, Jacamar, InfiniBand, xCAT, Warewulf, Lmod, EasyBuild, Open MPI, MPICH, Intel MPI
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6d
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Linux System Administrator
Annapolis Junction, Maryland, United States
OnsiteFull Time
Bespoke Technologies, Inc.
Bespoke Technologies, Inc.: Woman-owned U.S. technology consultancy delivering digital transformation, engineering, mission operations, and IT solutions to national-security customers.
3+ YOERequires TS/SCI with polygraph clearance, bachelor's degree or equivalent experience, and 3+ years of Linux administration. Experience with RHEL/CentOS, IBM storage, Veritas NetBackup, Nessus, YUM, security hardening, troubleshooting, and scripting.
Linux, RHEL, CentOS, IBM Enterprise Storage, Veritas NetBackup, YUM, Nessus, Bash, Python, Ansible, Puppet, Oracle, ST​​E, STIN, NSF
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3w
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Linux System Administrator
United States
$87k-$165k/yr FieldFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
Active transferable U.S. government Secret clearance, U.S. citizenship, ability to pass mariner physical, experience administering Linux/Windows systems, NetApp, VMware, Cisco, NetBackup, and scripting; able to work extended shipboard rotations.
Linux, Perl, shell, NetApp Clustered Data ONTAP, NetApp, Microsoft Windows Server, DNS, Active Directory, Group Policy, Cisco IOS, VMware vSphere, NetBackup, ACAS, HBSS
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4w
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Linux System Administrator
Fort Meade or Annapolis Junction
$150k-$190k/yr OnsiteFull Time
CTC Group
CTC Group: Private cloud technology consulting delivering software, analytics, AI, and digital government solutions to federal clients.
5+ YOEActive TS/SCI with polygraph, bachelor\u0002s in technical discipline (or 5 yrs experience), 5+ years systems administration experience, CWIP IAT certifications, RH/MCSA certifications, A+/Network+/SSCP, expertise in Linux, networking, virtualization, automation, and vulnerability remediation.
Cisco, Palo Alto, Ansible, Bash, Python, Nessus, Docker, Kubernetes, IPsec, VPN
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2mo
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Senior Linux System Administrator
Laurel, Maryland, United States
$100k-$245k/yr OnsiteFull Time
Johns Hopkins Applied Physics Laboratory
Johns Hopkins Applied Physics Laboratory: University-affiliated research center serving national security and science.
7+ YOEBachelor's in CS/IT or equivalent, 7+ years Linux systems administration in secure/complex environments, DoD 8570 cert (Security+, CASP, CISSP) or ability to obtain, Interim Secret clearance and ability to obtain Top-Secret, RMF/NIST experience, Linux (RHEL/Ubuntu) proficiency, scripting experience.
RHEL5, RHEL6, RHEL7, RHEL8, RHEL9, Ubuntu, Concurrent, Linux, GitLab, MATLAB, RMF, NIST, Microsoft Windows
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1w
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Linux System Administrator
Pittsburgh, Pennsylvania, United States
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.
Requires a bachelor's degree, Red Hat certification, enterprise Linux administration for 100+ servers, RHEL/OEL, OpenShift, virtualization, 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, Oracle
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2mo
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Platform / Linux System Administrator
Annapolis Junction, Maryland, United States
$125k-$240k/yr OnsiteFull Time
Synergy ECP
Synergy ECP: Private technology services firm providing cybersecurity, software engineering, and IT solutions to U.S. defense and intelligence agencies.
Manage and secure enterprise Linux environments; strong Linux administration, Bash/Python scripting, monitoring, networking, and security skills. TS/SCI w/ Polygraph required; U.S. citizenship required.
Linux, Bash, Python
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1w
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Linux System Administrator
Killeen, Texas, United States
OnsiteFull Time
First National Bank Texas
First National Bank Texas: Community-focused banking and financial services provider.
High school diploma required; bachelor's degree preferred. Requires Linux, Windows Server, web security, virtualization, container platforms, troubleshooting, communication, confidentiality, and background investigation.
Linux, Windows, Active Directory, Group Policy, DNS, DHCP, PowerShell, VMware vSphere, ESXi, OpenShift, Kubernetes, Docker, Git, Prometheus, Grafana, ELK, Splunk, Terraform, Ansible, RHEL, Ubuntu, CentOS, systemd, SSH, Apache, Nginx, cron, CI/CD, DevOps
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