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1,977 linux system administrator jobs at 877 companies in United States

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
1mo
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Linux System Administrator
Annapolis Junction or Columbia
$101k-$129k/yr OnsiteFull Time
Intelliforce
Intelliforce: Provides engineering and technical solutions for the intelligence community.
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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1mo
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Linux System Administrator
National Harbor, Maryland, United States
$104k-$218k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
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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3w
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Linux System Administrator
San Jose, California, United States
$43/hr OnsiteFull Time, Contract
SBT Global
SBT Global: Provides integrated IT consulting and global logistics management services.
7+ YOE7+ years Linux system administration experience with VMware, virtualization, storage, automation (Ansible), scripting, security patching, and hands-on data center tasks; CompTIA Security+ or DoD 8570.1 IAT Level II (or equivalent) required; Linux certifications preferred.
VMware, KVM, NetApp, Dell EMC, Pure Storage, Ansible, Foreman, GLPI, Cisco, Mellanox, FlexLM, Jira, Git, LDAP, Jenkins, Apache, Red Hat Linux, CentOS, Ubuntu, iptables
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1mo
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Linux System Administrator
Washington, District of Columbia, United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
6+ YOEBachelor's or equivalent with 6+ years related experience, IAT II (DoD 8570), ability to obtain Top Secret clearance, Linux system administration, DISA STIG hardening, Ansible, Docker, Git/GitLab, SELinux, VMWARE, TCP/IP.
Linux, AIDE, SELINUX, fapolicyd, Apache Proxy, LVM, Ansible, Java, Tomcat, TomcatEE, Glassfish, Docker, Docker compose, K8, Openshift, NFS, CIFS, Gitlab, Git, Gitlab workers, Gitlab pipelines, VMWARE, Oracle, MySQL, ACAS, DISA STIGs, TCP/IP
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1mo
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Linux System Administrator
Annapolis Junction, Maryland, United States
$130k-$150k/yr OnsiteFull Time
Red Arch Solutions
Red Arch Solutions: Provides IT engineering solutions for the intelligence community.
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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1w
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Linux System Administrator
Chantilly or McLean
$120k-$160k/yr OnsiteFull Time
Altamira Technologies
Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.
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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2mo
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Linux System Administrator
Annapolis Junction, Maryland, United States
OnsiteFull Time
CDIT
CDIT: Provides IT, software development, and cybersecurity for government 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
Kearneysville, West Virginia, United States
RemoteFull Time
OneZero Solutions
OneZero Solutions: Provides cybersecurity and IT services to federal government agencies.
5+ YOE5+ years Linux administration (RHEL) in enterprise environments, VMware vSphere, Ansible, scripting (Bash/Python), CompTIA Security+, experience with system hardening, patching, and federal compliance (DISA STIGs); Secret clearance required.
Red Hat Enterprise Linux (RHEL), VMware vSphere (ESXi/vCenter), BMC TrueSight Server Automation (TSSA), Ansible, DISA STIGs, Bash, Python, Docker, Kubernetes
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1mo
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Linux System Administrator
National Harbor or Washington
$104k-$218k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
7+ YOEU.S. citizenship required; minimum 7 years Linux system administration experience (MA + 7 years referenced); expertise with DISA STIGs/CIS Benchmarks, security hardening, patching, LDAP/PAM, identity management, and monitoring.
DISA STIGs, CIS Benchmarks, LDAP, PAM, bash, Python, Ansible, Puppet, Chef, AWS, Azure, ICAM
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3mo
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Linux System Administrator
Fort Meade, Maryland, United States
$85k-$142k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
5+ YOE5+ years systems administration experience, strong command-line Linux (Redhat/Rocky 8), VMWare/vSphere provisioning, Bash scripting, familiarity with security tools (NESSUS, McAfee agents), and active TS/SCI with Poly required.
Redhat, Rocky 8, Bash, PUTTY, VMWare, vSphere, ESXi, vCenter, NESSUS, MacAfee Agents, SALT, PKI, IAVAs
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3w
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Senior Linux System Administrator
Laurel, Maryland, United States
$100k-$245k/yr OnsiteFull Time
Johns Hopkins University Applied Physics Laboratory
Johns Hopkins University Applied Physics Laboratory: Conducts research and engineering for national security and space.
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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2mo
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System Administrator Linux
Morrisville, North Carolina, United States
HybridFull Time
Computer World Services
Computer World Services: Provides IT modernization and cybersecurity solutions for federal government agencies.
5+ YOEAdminister Linux servers, storage, and backups; ensure availability, performance, and security; manage access and compliance.
RHEL, Linux, Enterprise Storage, Backup and Recovery, TCP/IP, LDAP/Active Directory, VMware, Azure, ITIL, SolarWinds, Nagios, Splunk
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3w
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Platform / Linux System Administrator
Annapolis Junction, Maryland, United States
$125k-$240k/yr OnsiteFull Time
Synergy ECP
Synergy ECP: Provides cybersecurity and systems engineering for defense 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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1mo
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Linux System Administrator (Associate)
Seal Beach, California, United States
$79k-$133k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
Active Top Secret/SCI or recent Tier 5 (T5); experience with Linux (RHEL), AWS, system provisioning/patching, user administration; ability to obtain Security+ / IAT Level 2; U.S. person required; willingness to relocate if needed.
Red Hat, RHEL, AWS, Linux, Agile, Joint Special Access Program Implementation Guide (JSIG), Risk Management Framework (RMF)
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3w
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Linux System Administrator
Annapolis Junction, Maryland, United States
OnsiteFull Time
Quevera
Quevera: Software engineering and cloud solutions for government and defense.
3+ YOEActive TS/SCI with Polygraph, Bachelor\u0002s in CS/IT or equivalent, 3+ years Linux (RHEL/CentOS) administration, IBM storage, Veritas NetBackup, Nessus, YUM, scripting (Bash/Python), security hardening experience.
Red Hat Enterprise Linux (RHEL), CentOS, IBM Enterprise Storage, Veritas NetBackup, YUM, Nessus, Bash, Python, Ansible, Puppet, STE/STIN, NSF
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1w
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HPC Linux System Administrator
Houston, Texas, United States
OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.
5+ YOEBachelor's or equivalent, 5+ years experience (2+ in HPC), Linux administration, system configuration management, container-based HPC workflows, CI/CD, HPC scheduler administration, problem solving and teamwork.
RedHat-based systems, Docker, Podman, Apptainer, Luster, InfiniBand, Ansible, Foreman, SLURM, SPACK, Git, Gitlab, CI/CD
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2w
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Principal Linux System Administrator
McKinney, Texas, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
5+ YOEActive in-scope DoD Secret clearance and U.S. citizenship required; typically requires a bachelor’s and 5 years' relevant experience; Linux and Windows administration experience; AD/VMware/system hardening/disaster recovery experience; CompTIA Security+ CE or equivalent within 6 months.
RedHat Linux, Windows, Active Directory, VMware, LDAP, SCAP, Nessus, Splunk, Symantec
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2mo
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Windows/Linux System Administrator
San Jose, California, United States
$77k-$128k/yr OnsiteFull Time
Lanteris Space Systems
Lanteris Space Systems: Manufactures high-performance satellites and spacecraft for orbital missions.
Linux/Windows system administration, networking, scripting, security hardening; US citizenship or permanent residency; degree or equivalent experience.
Linux, Windows, Networking, Shell scripting, Automation, AWS, Azure, GCP, VMware
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1w
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HPC Linux System Administrator
Houston, Texas, United States
OnsiteFull Time
Mclaurin Aerospace
Mclaurin Aerospace: Provides specialized aerospace engineering, research, and technical advisory services.
5+ YOE5+ years technical experience with Linux and large-scale system administration, including HPC, container workflows, CI/CD, schedulers; bachelor's degree or equivalent; strong problem solving and teamwork skills.
Docker, Podman, Apptainer, RedHat, Luster High-speed Parallel Filesystems, InfiniBand, Ansible, Foreman, SLURM, SPACK, Git, Gitlab, CI/CD
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3w
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Linux System Administrator
Fort Detrick, Maryland, United States
$98k-$163k/yr HybridFull Time
ManTech
ManTech: Provides technology services and cybersecurity for government and defense.
7+ YOEBachelor's degree plus 7+ years Linux infrastructure experience (OracleLinux); scripting (Shell, Perl, Python, Go); DevOps and AWS experience; ability to obtain CompTIA Security+ and AWS SysOps certifications and Public Trust.
AWS, CloudWatch, SNS, OracleLinux, Shell, Perl, Python, Go, SAP/HANA, DISA STIGs, SRG, RMF
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