41 linux system administrator jobs at 28 companies in Cullman, AL

2w
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Senior Linux Administrator
Huntsville, Alabama, United States
OnsiteFull Time
Systems Planning and Analysis
Systems Planning and Analysis: Provides technical and analytical support to national security agencies.
8+ YOEBachelor's degree in CS/IT/EE/CE,8+ years systems admin,5+ years Linux administration,Security+ and Linux+ or RedHat cert,active SECRET clearance required.
Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, OpenShift, Ansible Automation, Gitlab, VEEAM, NetApp, HPE/Synergy, Synology, Windows, Active Directory, Cisco
2w
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Principal Linux System Administrator- must have active secret clearance
Huntsville, Alabama, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOEActive US secret clearance and US citizenship, bachelor\u0002s plus 5 years experience, Linux and Windows server administration, AD/LDAP, VMware, Ansible, security tooling; must obtain CompTIA Security+ CE or equivalent within 6 months.
Redhat Enterprise Linux, Microsoft Windows, Ansible, DNS, DHCP, LDAP, Active Directory, VMware, SCAP, Nessus, Splunk, Symantec
4w
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System Administrator
Redstone, Alabama, United States
OnsiteFull Time
QBE
QBE: Provides technology and security services for federal defense agencies.
5+ YOETop Secret/SCI clearance, 5+ years enterprise IT experience, hands-on Windows/Linux system and network administration, STIGs/patching, incident response, and Tier 1/2 user support.
Windows, Linux, Security Technical Implementation Guides (STIGs), COMSEC
19h
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System Administrator
Huntsville, Alabama, United States
OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
DoD 8570 IAT Level II and Linux certification, Linux (RHEL) administration, PowerShell/Bash scripting, DISA STIG/RMF/IAVA experience, vulnerability scanning (ACAS/Nessus), U.S. citizenship and active DoD Secret clearance.
FBM Planner, Linux, RHEL, PowerShell, Bash, DISA STIG viewer, SCAP Compliance Checker, ACAS, Nessus, Docker, Kubernetes
5d
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System Administrator
Huntsville or Redstone Arsenal
OnsiteFull Time
Torch Technologies
Torch Technologies: Provides research and engineering services to the defense industry.
0+ YOEUS citizen able to obtain Secret clearance, Associate's or Bachelor's in IT/CS/Systems Engineering (or equivalent training), 0–5 years IT/sysadmin experience, Linux/Windows fundamentals, virtualization, scripting, and CompTIA Security+ CE (or obtain within 60 days).
RHEL, Rocky, Ubuntu, Windows Server, VMware vSphere/ESXi, KVM, Hyper-V, Bash, PowerShell, Python, DISA STIGs, Docker, Podman, Ansible, Puppet, SaltStack
2w
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Intermediate System Administrator (Linux/OpenShift) - PAE Fires IT Support (AL, Huntsville)
Huntsville, Alabama, United States
OnsiteFull Time
Technology Automation & Management (TeAM)
Technology Automation & Management (TeAM): Provides IT and program management services to federal agencies.
Administer Red Hat OpenShift and Linux systems, maintain virtual infrastructure, serve as Tier 3 escalation for container and RHEL application issues, and support Dev/Stage/Prod environment provisioning.
Linux, Red Hat OpenShift, RHEL
19h
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System Administrator
Huntsville, Alabama, United States
OnsiteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
0+ YOEMust hold DoD 8570 IAT Level II Linux certification, administer RHEL, script with PowerShell/Bash, use DISA STIG Viewer/SCAP/ACAS/Nessus; U.S. citizen with active DoD Secret clearance.
RHEL, PowerShell, Bash, DISA STIG viewer, SCAP Compliance Checker, ACAS, Nessus, Docker, Kubernetes
2w
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System Administrator II
Huntsville, Alabama, United States
OnsiteFull Time
Technology Service Corporation
Technology Service Corporation: Develops advanced sensor systems and engineering solutions for defense.
2+ YOEAssociate's or Bachelor's (or equivalent experience), minimum 2 years IT support experience, U.S. citizenship and eligibility for DoD Secret clearance, experience with Microsoft 365, Active Directory, Linux, MacOS, and strong organizational skills.
Microsoft 365 GCC High, Microsoft SharePoint Online, Microsoft Exchange, Active Directory, Group Policy, Entra ID, Intune, Linux, Red Hat, Ubuntu, Red Hat Satellite Server, Mac OS, Azure
1mo
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Linux Systems Administrator / Secret / Onsite: Huntsville, AL
Huntsville, Alabama, United States
OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Requires Secret clearance to start and ability to obtain Top Secret; DoD 8570 IAT II/III cert (Security+, CASP, CISSP) within 6 months; Linux/UNIX administration, lifecycle/configuration management, vulnerability remediation, helpdesk support; able to lift 30 lbs.
RH 7.x, RH 8.x, Ansible, Red Hat OpenShift, Kerberos, LDAP, NTLM, Active Directory, DHCP, DNS, Group Policy, WSUS, TCP/IP, UDP, SMTP, NFS, FTP, Telnet, SSH, Microsoft Windows 10, Microsoft Windows 11, VMware vSphere, VSphere vCenter, ESXi, KVM, STIG, RMF
1mo
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1218 - IT System Administrator
Huntsville, Alabama, United States
OnsiteFull Time
Monte Sano Research
Monte Sano Research: Provides defense engineering and missile research for government clients.
5+ YOEBachelor's in CS/IS, CompTIA Security+ required, 5+ years systems/network support experience, experience with Microsoft 365/Entra ID, Windows/Linux/Mac, DoD security familiarity, U.S. citizenship and ability to maintain active security clearance.
Microsoft 365, Entra ID (Azure AD), Microsoft Outlook, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Microsoft Office, Windows Operating Systems, Linux, Macintosh
3w
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Windows System Administrator- Huntsville, Alabama
Huntsville, Alabama, United States
OnsiteFull Time
Davidson Technologies
Davidson Technologies: Delivers engineering and technology solutions for national security missions.
5+ YOEActive DoD Secret clearance, CompTIA Security+, 5+ years Windows administration experience, PowerShell scripting, AD/DNS/GPO management, patch management (WSUS/SCCM), DISA STIG/ACAS familiarity, virtualization and hybrid Windows/Linux operations.
Windows 10, Windows 11, Windows Server 2019, Windows Server 2022, Hyper-V, VMware ESXi, PowerShell, Ansible, ACAS, Evaluate-STIG, Microsoft Office 365, Microsoft Teams, Microsoft SharePoint, Git, GitLab, Jenkins, WSUS, SCCM, Splunk, SolarWinds, Prometheus, KVM, Red Hat Enterprise Linux (RHEL)
1mo
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Linux Systems Administrator PR Lead - Kwajalein Atoll - 3856
Huntsville or Huntsville or Marshall Islands
OnsiteFull Time
RGNext
RGNext: Operates and maintains space launch and missile defense ranges.
8+ YOEBachelor's or equivalent experience, 8+ years IT experience, expertise with RHEL, Docker, Ansible, Git; DoD baseline IAT Level II certifications (Security+/CySA+/GICSP and Linux+/Server+/CE); ability to obtain Secret clearance and relocate to Kwajalein.
RHEL, Red Hat, Docker, Kubernetes, Ansible, Git, GitLab, Ceph, Centrify, Windows, STIG, Bash, Python, PowerShell, sar, mpstat, top, vmstat, iostat
2mo
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Atlassian Administrator
San Diego or Colorado or Huntsville or Tupelo
$72k-$110k/yr HybridFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
4+ YOE4+ years Atlassian administration experience, 3+ years systems administration; strong Linux/Windows/Unix and enterprise Atlassian (JIRA, Confluence, Bitbucket, Bamboo, Fisheye/Crucible) skills; Agile/Scrum experience; HA/DR and automation experience; US citizenship required.
Atlassian, JIRA, Confluence, Bitbucket, Bamboo, Fisheye, Crucible, Microsoft 365, Microsoft Teams, Microsoft OneDrive, Microsoft Forms, Microsoft Planner, Microsoft SharePoint, Linux, Windows, Unix, TCP/IP, VMs, Agile, Scrum
2w
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2026-07 Principal Systems Administrator
Huntsville, Alabama, United States
OnsiteFull Time
1st Edge
1st Edge: Develops artificial intelligence and software solutions for defense agencies.
10+ YOE10+ years systems administration experience with mixed Windows/Linux infrastructure, VMware vSphere, networking, scripting (Bash/Python/PowerShell), DoD/CMMC compliance, and clearance eligibility.
Active Directory, DNS, DHCP, Certificate Services, Ubuntu, Rocky Linux, RHEL, VMware vSphere, Entra ID, GCC High, SLURM, Bash, Python, PowerShell, GitLab, Artifactory, MLflow, Ansible, GitLab CI, Jenkins
6d
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Systems Administrator
Huntsville, Alabama, United States
OnsiteFull Time
Barrios Technology
Barrios Technology: Provides aerospace engineering and mission integration services.
5+ YOEBS/BA plus 5 years or equivalent experience; U.S. citizenship and eligibility for government background investigation; experience administering Windows, Linux, Solaris, Active Directory, HPE hardware, Veritas NetBackup, and lab networking.
Microsoft Windows Server, Veritas Netbackup, Hewlett Packard Enterprise (HPE), Active Directory, Solaris, Linux, TCP/IP, HPE StorageWorks MSL4048, MSL3040, SCSI HBA, Broadcom
5d
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Systems Administrator
Huntsville, Alabama, United States
OnsiteFull Time
Barrios Technology
Barrios Technology: Engineering and technology services for human spaceflight missions.
5+ YOEBS/BA in related field plus 5 years experience (or equivalent); experience administering Windows, Linux, Solaris, Active Directory, Veritas NetBackup, HPE servers, tape libraries, and lab networks; U.S. citizenship and ability to pass government background check.
Microsoft Windows Server, Veritas NetBackup, Hewlett Packard Enterprise (HPE), HPE StorageWorks, LTO, SCSI, Solaris, Linux, TCP/IP, Active Directory
2w
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Classified Systems Administrator
Huntsville, Alabama, United States
$95k-$143k/yr OnsiteFull Time
The Aerospace Corporation
The Aerospace Corporation: Provides technical expertise and research for national space programs.
6+ YOEActive Secret clearance, DoD 8570 certification (e.g., Security+), 6+ years systems administration experience (10+ for higher grade), proficiency with Windows Server/AD, Linux, virtualization, scripting, vulnerability remediation and RMF/NIST/DISA STIG compliance.
PowerShell, Ansible, Tenable (ACAS), SCAP, STIG, RMF, NIST 800-53, DISA STIG, Windows Server, Active Directory, Red Hat Enterprise Linux, Hyper-V, VMWare VSphere, Cisco IOS, Nexus OS, SPLUNK
2mo
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Systems Analyst II - Linux
Birmingham, Alabama, United States
$82k-$132k/yr HybridFull Time
UAB Medicine
UAB Medicine: Academic health system providing patient care and medical education.
3+ YOEAssociate degree or equivalent, 3+ years Linux system administration experience, expertise with Red Hat/Oracle Linux, Bash/Python/Perl scripting, networking, virtualization, SAN storage, monitoring tools, and on-call support.
Red Hat Enterprise, Oracle Enterprise, Bash, Python, Perl, Microsoft Active Directory, Tanium, VMware, HyperV, SAN enterprise storage, Xymon, Zabbix, Nagios, VMware vRealize Operations Manager, AWS, Azure, Docker, Kubernetes
2mo
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Systems Administrator 2nd shift
Huntsville, Alabama, United States
$51k-$82k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
0+ YOEActive TS/SCI with Poly; 2nd shift; end-user tech support; Windows/Linux; DoD 8570 IAT I/II; Cisco Packet Tracer; security certifications.
Windows, Linux, Cisco Packet Tracer, DoD 8570, CISSP, Security+, TS/SCI Poly
1w
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System Reliability & Support Specialist Sr. - Production Support
Pittsburgh or Phoenix or Denver or Dallas or Birmingham or Cleveland
$75k-$138k/yr OnsiteFull Time
PNC Financial Services
PNC Financial ServicesNYSE: PNC: Provides banking, lending, and investment services to customers.
3+ YOE3+ years IT experience, production support, vulnerability and incident management, OS administration (Windows/Linux), Dynatrace/Logscale, EM/SQL troubleshooting, bachelor's degree preferred.
Dynatrace, Logscale, Jira, Confluence, Service Now, SQL, ETL, SQL Server, Windows, Linux