HiringCafe
Join our community

123 linux system administrator jobs at 59 companies in Colorado

3d
Save
Mark Applied
Hide
Principal Linux System Administrator
Aurora, Colorado, United States
$149k-$184k/yr OnsiteFull Time
SciTec
SciTec: Provides advanced remote sensing and missile defense technology solutions.
8+ YOE8+ years administering Linux (RHEL) with Top Secret clearance, experience in system hardening (STIG/SCAP), virtualization, patch management, networking, troubleshooting, and automation/scripting.
Red Hat Enterprise Linux (RHEL), RHEL 8, RHEL 9, RHEL 10, VMware, VMware vSphere, Podman, Docker, Red Hat OpenShift, Kubernetes, minikube, Image registries, PyPI, Ansible, Bash, Python, Git, GitLab, CI/CD, DISA SCAP Compliance Checker, DISA STIG, Dell servers, SAN
Job PostingView all
1mo
Save
Mark Applied
Hide
Linux Administrator II
Westminster, Colorado, United States
$33-$39/hr OnsiteFull Time
CesiumAstro
CesiumAstro: Develops phased array communication systems for satellites and aircraft.
2+ YOEBachelor's degree in a technical discipline with 2+ years Linux systems administration; networking fundamentals (TCP/IP, DNS, DHCP, VLANs), cybersecurity best practices, troubleshooting, operational readiness, and strong cross-team communication.
Linux, TCP/IP, DNS, DHCP, VLANs, firewalls
Job PostingView all
1w
Save
Mark Applied
Hide
System Administrator 3 - Linux / Cloud
Centennial, Colorado, United States
$100k-$166k/yr OnsiteFull Time
United Launch Alliance
United Launch Alliance: Aerospace providing space launch services for satellites.
4+ YOEBachelor in STEM and 4+ years Linux administration experience; cloud (AWS/Azure), monitoring, patching, backups, scripting (Bash/Python) and troubleshooting; strong communication and operational discipline; must be U.S. Person per ITAR.
AWS, Azure, Bash, Python, Ansible, Terraform, Docker, Kubernetes
Job PostingView all
1mo
Save
Mark Applied
Hide
Staff Linux System Administrator, TS/SCI / Onsite: CO
Littleton, Colorado, United States
$105k-$184k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
5+ YOEActive TS/SCI with CI poly, U.S. citizenship, DoD 8572 (e.g., Security+), 5+ years RHEL administration, scripting/automation (Ansible, Python, Bash, PowerShell), DISA STIGs and security hardening experience.
Red Hat Enterprise Linux, Ansible, Python, Bash, PowerShell, DISA STIGs, Nessus, Trellix, Splunk, ACAS, SCAP, NetApp
Job PostingView all
1w
Save
Mark Applied
Hide
Sr Linux Administrator
Centennial or Louisville
$136k-$187k/yr OnsiteFull Time
Sierra Space
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
8+ YOEBachelor's or equivalent, typically 8+ years related experience, 3+ years cloud experience (AWS/Azure), advanced systems administration, security, scripting/automation, and leadership/mentoring skills.
AWS, Azure, Docker, Kubernetes, Jenkins, Ansible, Puppet, Chef
Job PostingView all
10h
Save
Mark Applied
Hide
System Administrator
Aurora or Texas
$130k-$165k/yr OnsiteFull Time
Innovative Signal Analysis
Innovative Signal Analysis: Provider of real-time signal and image processing systems.
Active TS/SCI clearance with CI polygraph, hands-on Windows and Linux administration, infrastructure troubleshooting, networking, virtualization, automation, security, and onsite Colorado work.
Windows, Linux, Windows 11, Windows Server 2022, Red Hat Enterprise Linux 8/9, Microsoft 365, Active Directory, Group Policy, DNS, DHCP, Exchange, WSUS, Kickstart, Bash, PowerShell, Git, Ansible, Terraform, Packer, GitLab, CI/CD, Nexus, Podman, Kubernetes, RKE2, K3s, Trident, Cisco Catalyst, Cisco Nexus, Palo Alto, Cisco VoIP, NetApp, Synology, Pure Storage, Veeam, Grafana, Prometheus, SolarWinds, Elastic Stack, Splunk, Nessus, Trellix, SCAP, CMMC
Job PostingView all
1mo
Save
Mark Applied
Hide
System Administrator - Journeyman
Colorado Springs, Colorado, United States
$90k-$120k/yr OnsiteFull Time
Modern Technology Solutions
Modern Technology Solutions: A technology providing systems engineering and cybersecurity support to government and defense customers.
3+ YOELinux/RHEL administration, Microsoft Windows knowledge, Group Policy, Cisco networking, virtualization, LAN/WAN and backup tech, COMSEC and IL4+ experience, RMF familiarity, Bash and Python, Top Secret/SCI clearance, and relevant cyber/sysadmin certifications.
Linux, RHEL, Microsoft Windows, Group Policy, Cisco, Bash, Python, AWS Cloud
Job PostingView all
22h
Save
Mark Applied
Hide
System Administrator 1
Annapolis Junction or Colorado or Georgia or Hawaii or Texas or Utah or Virginia
$120k-$150k/yr OnsiteFull Time
RealmOne
RealmOne: Provides advanced technology services for national security agencies.
5+ YOEFive years of systems administration experience, modern operating systems and network architecture experience, certification and accreditation, risk assessment, IA metrics, IAM Level I certification, and active security clearance with polygraph.
Linux, Unix, Windows, VMware
Job PostingView all
1mo
Save
Mark Applied
Hide
Sr Principal Linux Systems Administrator - Secret
Boulder, Colorado, United States
$129k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
6+ YOEMust hold U.S. Secret clearance, meet 8140 IAT Level II (e.g., Security+) requirements, have extensive Linux server administration in a classified environment, cross-platform OS awareness, and meet degree/experience combination listed.
Red Hat Satellite, Ansible, HBSS, PRTG, Splunk, PowerShell, VMware, NFS, Microsoft Windows, Microsoft Active Directory, Cisco, Windows, Solaris, OSX, UNIX
Job PostingView all
1mo
Save
Mark Applied
Hide
Sr Principal Linux Systems Administrator - Secret
Boulder, Colorado, United States
$129k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
6+ YOESecret clearance required; IAT Level II (8140) certification (e.g., Security+) required; 6+ years IT experience (Masters) or equivalent; Linux server administration in classified environments; cross-platform OS awareness; Red Hat Satellite and Ansible experience preferred.
Linux, Red Hat Satellite, Ansible, HBSS, PRTG, Splunk, PowerShell, VMware, NFS, Microsoft Active Directory, Windows, Solaris, OSX, UNIX, Cisco
Job PostingView all
2d
Save
Mark Applied
Hide
Slingshot Hardware System Administrator
Chippewa Falls or Fort Collins or Spring or Bloomington
$106k-$243k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides edge-to-cloud IT infrastructure and platform services.
4+ YOEBachelor's or Master's degree in Computer Science, Information Systems, or equivalent; 4–6 years as a system or network administrator and lab technician; Linux, networking, scripting, and hardware lab experience.
Linux, LSF, Slurm, Shell, Bash, Python
Job PostingView all
2d
Save
Mark Applied
Hide
Slingshot Hardware System Administrator
Chippewa Falls or Fort Collins or Spring or Bloomington
$106k-$243k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Providing global edge-to-cloud infrastructure and IT solutions for businesses.
4+ YOEBachelor's or master's degree in Computer Science, Information Systems, or equivalent; 4–6 years as a system or network administrator and lab technician; Linux, networking, scripting, and hardware lab experience.
Linux, LSF, Slurm, Shell, Bash, Python
Job PostingView all
2d
Save
Mark Applied
Hide
Slingshot Hardware System Administrator
Chippewa Falls or Fort Collins or Spring or Bloomington
$106k-$243k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
4+ YOEBachelor’s or master’s degree in computer science, information systems, or equivalent; 4–6 years as a systems or network administrator or lab technician; Linux, networking, filesystems, scripting, and hardware lab experience.
Linux, LSF, Slurm, Shell, Bash, Python
Job PostingView all
1mo
Save
Mark Applied
Hide
System Administrator - Journeyman
Colorado Springs, Colorado, United States
$90k-$120k/yr OnsiteFull Time
Modern Technology Solutions, Inc.
Modern Technology Solutions, Inc.: Provides engineering, technology, and cybersecurity services for national security.
3+ YOE3+ years sysadmin experience with Linux/RHEL and Windows, CISCO networking, virtualization, LAN/WAN, COMSEC and RMF knowledge; Bash and Python scripting; Top Secret/SCI clearance; cyber/sysadmin certifications (Security+, Red Hat, AWS, CCNA or DoD 8140).
Linux, RHEL, Microsoft Windows, Group Policy, Cisco, LAN, WAN, Risk Management Framework (RMF), COMSEC, Bash, Python, AWS
Job PostingView all
3w
Save
Mark Applied
Hide
SIM System Administrator I
Fort Carson, Colorado, United States
$63k-$65k/yr OnsiteFull Time
Hatalom
Hatalom: Provides simulation and training solutions for defense organizations.
5+ YOEBA/BS in IT or related (or 3 additional years experience),5 years computer systems experience, IAT Level I, active SECRET clearance, US citizenship, TCP/IP, Linux/Windows troubleshooting, familiarity with AFATDS,JADOCS,AMDWS,TAIS,JBCP,CPCE.
TCP/IP, Linux, Windows, AFATDS, JADOCS, AMDWS, TAIS, JBCP, CPCE
Job PostingView all
1mo
Save
Mark Applied
Hide
Senior, System Administrator (TS/SCI Needed) (39393)
Colorado Springs, Colorado, United States
$93k-$172k/yr OnsiteFull Time
L3Harris Technologies
L3Harris TechnologiesNYSE: LHX: Aerospace and defense providing mission-critical technology solutions.
4+ YOESystem administration experience with AWS AMI/EC2, Windows and Red Hat Linux, security hardening/STIG, patch automation, and relevant DoD certifications; TS/SCI clearance required.
Amazon Web Service (AWS), Amazon Machine Images (AMI), EC2, Packer, Viper, AWS Systems Manager, Jenkins, GitLab Runner
Job PostingView all
2w
Save
Mark Applied
Hide
System Administrator / Tier II Support
Greenwood Village, Colorado, United States
$69k-$120k/yr HybridFull Time
Arcfield
Arcfield: Systems engineering and mission support for defense and space.
2+ YOEMust maintain active TS/SCI with polygraph, DoD 8570 IAT Level II (e.g., Sec+, CISSP), 2+ years relevant experience (varies by degree), Windows, Active Directory, virtualization, networking, scripting, and Linux skills.
Windows, Active Directory, Exchange, VMware, Hyper-V, TCP/IP, DHCP, PowerShell, Bash, Python, Linux, Voice over IP, Microsoft On-Premise Software Center Configuration Management
Job PostingView all
2mo
Save
Mark Applied
Hide
Cloud and Infrastructure Systems Administrator - Linux admin
Denver, Colorado, United States
$83k-$174k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
7+ YOETS/SCI with Polygraph required; DoD 8570 IAT Level II (Security+ or CISSP) required or must obtain; Bachelor’s degree in CS/IT; ~7 years Linux system administration and network troubleshooting; cloud (AWS), DevOps, Puppet/IPA/Kubernetes/Ansible experience preferred.
Linux, Nutanix, AWS, IPA, Puppet, Kubernetes, Ansible
Job PostingView all
1w
Save
Mark Applied
Hide
System Administrator- Must have TS/SCI Poly clearance
Aurora, Colorado, United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
2+ YOEActive transferable TS/SCI with CI poly, DoD 8570 IAT Level 2 cert, bachelor\u0002s and ~2 years experience, Linux RedHat and Microsoft Windows experience, virtualization/cloud (Citrix, VMware, AWS), 24x7 operations support.
Linux RedHat, Microsoft Windows, Citrix, VMware, Amazon Web Services (AWS), Cloudera, Oracle, Dell/EMC, Isilon/PowerScale, NetApp
Job PostingView all
1mo
Save
Mark Applied
Hide
System Administrator 0-3 (LCAT Flexible from SA0 to SA3)
Annapolis Junction or Maryland or Virginia or Colorado or Texas or Utah or Alaska or Hawaii
$39-$118/hr OnsiteFull Time
Wyetech
Wyetech: Provides professional engineering services for government and commercial sectors.
5+ YOEU.S. citizenship and active TS/SCI (with poly) required. Bachelor's in a technical discipline or equivalent experience. 5+ years system administration experience (higher levels require more). Experience with UNIX/Windows, virtualization, automation, scripting, and cloud.
UNIX, Windows, Linux, Proxmox, Ansible, SALT Automation, Bash, Perl, Python, SSP Compliance, AWS, CIFS, Centrify, Windows DC, Microsoft Exchange, Service Oriented Architecture (SOA)
Job PostingView all

Explore Jobs

Expand Your Job Search