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55 linux system administrator jobs at 32 companies in Aurora, CO

3d
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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 systems (RHEL preferred), system hardening (STIG/SCAP), virtualization, networking, troubleshooting, and ability to obtain Secret clearance.
RHEL, RHEL 8, RHEL 9, RHEL 10, Red Hat Openshift, Kubernetes, VMware, VMware vSphere, Podman, Docker, Docker registry, Image registries, Pypi, Ansible, Bash, Python, Git, GitLab, CI/CD, minikube, DISA SCAP Compliance Checker, DISA STIG implementation
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1mo
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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
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1w
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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
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1mo
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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
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1mo
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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
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2w
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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
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6d
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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
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2mo
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System Administrator/Cloud Engineer - Aurora, CO or Meridian, CO
Aurora or Meridian
$90k-$237k/yr OnsiteFull Time
ICR
ICR: Provides IT and security services
3+ YOETop Secret/SCI eligibility required; Kubernetes (K3s) experience; Linux admin; AWS Snowball Edge/Outpost; 3+ years system admin; DevSecOps pipelines; network protocols.
Kubernetes, AWS Snowball Edge, AWS Outpost, Linux, Bash, Python, Git, Ansible, Ingress controllers, Proxy server administration, NPE Certificate Management
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2mo
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Cloud and Infrastructure Systems Administrator - Linux admin
Denver, Colorado, United States
$83k-$174k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
7+ YOEDoD 8570 IAT Level II (Security+ or CISSP) or willingness to obtain; BS in CS/IT; 7+ years Linux server/desktop administration and network troubleshooting; DevOps knowledge; willingness to learn.
Linux, AWS, Puppet, IPA, Kubernetes, Ansible, Scripting
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2mo
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ITS System Administrator (Lakewood, CO, US)
Lakewood, Colorado, United States
$78k-$98k/yr OnsiteFull Time
Terumo Blood and Cell Technologies
Terumo Blood and Cell TechnologiesTokyo Stock Exchange: 4543: Manufactures medical devices for blood and cell therapy processing.
5+ YOE5+ years in systems administration; 2+ years configuring Azure/Office 365; strong Windows Server, virtualization, AD, backups; ITIL knowledge.
Microsoft Windows Server, Active Directory, Azure, Office 365, VMware, SQL, PowerShell, SharePoint, Exchange Online, Linux/Unix
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2mo
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Systems Sr Administrator (IT)
Denver, Colorado, United States
$78k-$119k/yr OnsiteFull Time
DaVita
DaVitaNYSE: DVA: Provides kidney dialysis and integrated chronic disease management services.
Senior UNIX/Linux systems administration in multi-location environments; production support; automation and open source tooling; strong ITIL practices.
Linux, OpenShift, Oracle, DB2, Puppet Enterprise, Confluence
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1mo
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Systems Administrator-Cleared
Denver or Folsom
$120k-$165k/yr OnsiteFull Time
Voyager Technologies
Voyager TechnologiesNYSE: VOYG: Provides advanced defense and commercial space technology solutions.
3+ YOEActive TS/SCI required, 3+ years systems administration experience; manage Microsoft 365/Azure, Intune, Okta, AD, Windows/Linux servers, virtualization, Fortinet networking, and scripting (PowerShell/Bash/Python).
Microsoft 365, Microsoft Azure, Microsoft Intune, Okta, Microsoft Entra ID, Microsoft Exchange Online, Microsoft Teams, Microsoft SharePoint, Microsoft Defender, Windows Server, Linux, Ubuntu, RHEL, CentOS, VMware vSphere, Hyper-V, Fortinet, FortiGate, FortiSwitch, FortiClient, Active Directory, PowerShell, Bash, Python, ServiceNow, Jira Service Management
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2w
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Systems Administrator - IT
Greenwood Village, Colorado, United States
$80k-$90k/yr OnsiteFull Time
York Space Systems
York Space SystemsNYSE: YSS: Designs and manufactures modular spacecraft platforms and mission solutions.
Maintain and support servers, networks, and systems; troubleshoot hardware/software; perform updates and asset lifecycle tasks. Associate degree or equivalent experience; CompTIA A+ acceptable; Windows/Linux and network fundamentals knowledge required.
Windows, Linux, TCP/IP, DNS, DHCP
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1mo
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Senior IT Systems Administrator
Broomfield, Colorado, United States
$110k-$175k/yr OnsiteFull Time
Katalyst Space Technologies
Katalyst Space Technologies: Develops robotic spacecraft for in-orbit satellite servicing and maneuvering.
6+ YOE6+ years administering corporate IT systems; strong Microsoft 365/Entra ID, endpoint and SaaS administration; networking fundamentals; Windows/Linux endpoint lifecycle management; scripting (PowerShell, Python, Bash); GitLab and IaC experience.
Microsoft 365, Entra ID (Azure AD), Microsoft Intune, Jamf, Kandji, PowerShell, Python, Bash, GitLab, Infrastructure as Code (IaC), Windows, Linux, TCP/IP, DNS, DHCP, VPN
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5d
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Unix Administrator
Denver, Colorado, United States
OnsiteFull Time
NuAxis Innovations
NuAxis Innovations: Provides IT infrastructure and customer experience solutions for government agencies.
Manage, configure, tune, and secure large-scale Redhat/Oracle Linux systems; perform installations, patching, disaster recovery, and collaborate with security teams.
Redhat, Oracle Linux, RHEL, VMware, KVM, Microsoft Azure, Redhat Satellite, Shell
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1mo
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Systems Administrator
Greenwood Village, Colorado, United States
$80k-$95k/yr HybridFull Time
GrowGeneration
GrowGenerationNASDAQ: GRWG: Retailer of hydroponic and organic gardening supplies and equipment.
3+ YOE3+ years systems admin/support experience with server, network, and cloud operations; experience with Windows AD, GPO, PowerShell, Intune/MDM, API tooling, disaster recovery, documentation, and stakeholder communication. Relevant certifications preferred.
Windows AD, GPO, PowerShell, API, MDM, Microsoft Intune, Linux
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1w
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Staff Network Administrator
Boulder, Colorado, United States
$135k-$175k/yr OnsiteFull Time
Electra
Electra: Decarbonizing iron production through low-temperature electrochemical refining technology.
12+ YOEBachelor's in CS/IT,12+ years networking/systems experience (or 8 with master's,5 with PhD). Expert enterprise networking, cloud (AWS/Azure), virtualization, Windows/Linux, scripting (Python/PowerShell), Azure Entra, and infrastructure automation.
Azure Entra, M365, AWS, Azure, HCI Platforms, Python, PowerShell, VMware, Hyper-V, Cisco, Juniper, Ubiquiti, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Microsoft OneDrive, Microsoft SharePoint
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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
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6d
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Systems Administrator II
Parker, Colorado, United States
$104k-$122k/yr OnsiteFull Time
Parker Water & Sanitation District
Parker Water & Sanitation District: Provides water and wastewater services to the community.
5+ YOEBachelor's in CS/IT or equivalent, 5+ years supporting enterprise servers/workstations, strong AD/Microsoft 365 and virtualization skills, valid driver's license.
Windows Professional, Windows Server, Linux, Active Directory, Microsoft 365, Intel, HP, Veeam, Nutanix, VMware, Exagrid, Microsoft Intune, Azure AD, Microsoft Exchange, SMTP, VoIP, TCP/IP, VLAN, VPN
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2mo
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IT Systems Delivery Administrator
Centennial, Colorado, United States
$80k-$90k/yr OnsiteFull Time
Rincon Research Corporation
Rincon Research Corporation: Designs high-performance digital signal processing solutions for defense missions
5+ YOEBachelor's in Information Systems or related field; or 5+ years of experience; DOD 8570 (Security+); TS/SCI clearance; US citizenship.
Microsoft Windows operating systems, Microsoft Active Directory, Linux operating systems, Microsoft Office, Computer networking
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