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171 windows administrator jobs at 101 companies in Thornton, CO

1w
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Staff Windows System Administrator - TS/SCI W/Poly - Littleton, CO
Littleton or Waterton or Washington
$118k-$219k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Global security and aerospace driving innovative defense solutions.
Active TS/SCI clearance with CI Poly, U.S. citizenship, IAT II certification, and expert experience with Active Directory, Windows Server, server hardware, virtualization, vulnerability remediation, and security management.
Active Directory, Windows Server, VMWare, Hyper-V, HP OneView, iLO, iDRAC, Nessus, Trellix, WSUS, MECM, Ivanti, Splunk, Linux, Ansible, PowerShell, Terraform, Chef, Puppet, Azure, KVM, Nutanix, SR-IOV, vRSS, MPIO, Fibre Channel, iSCSI, RDS, HorizonView, XenDesktop, NetApp, Nimble, Racktop
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1w
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Staff Windows System Administrator - TS/SCI W/Poly - Littleton, CO
Littleton or Waterton or Bethesda or United States
$118k-$219k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Global security and aerospace driving innovative defense solutions.
Active TS/SCI clearance with CI Poly, U.S. citizenship, IAT II certification, and expert experience with Active Directory, Windows Server, server hardware, virtualization, vulnerability remediation, and security management.
Active Directory, Windows Server, HP OneView, iLO, iDRAC, VMware, Hyper-V, Nessus, Trellix, WSUS, MECM, Ivanti, Splunk, Linux, Ansible, PowerShell, Terraform, Chef, Puppet, Azure Local, KVM, Nutanix, SR-IOV, vRSS, MPIO, NetApp, Nimble, RackTop, Fibre Channel, iSCSI, RDS, Horizon View, XenDesktop
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1mo
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Windows Systems Administrator II
Broomfield, Colorado, United States
$79k-$135k/yr OnsiteFull Time
BAE Systems
BAE SystemsLSE: BA.: Global defense, aerospace, and security technology.
2+ YOETS/SCI polygraph eligible, 2+ years related experience or equivalent, experience with Windows Server, patching, SCCM/MECM, Group Policy, Tenable/SCAP, VMware/VDI, and strong documentation and communication skills.
Windows Server, SCCM, MECM, Tenable, SCAP, VMware, VDI, Active Directory, Group Policy, PowerShell, Sentinel 1, RSA, PING-Id, Commvault, Veeam, PPDM, Networker, JIRA
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3w
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Warranty Administrator
Brighton, Colorado, United States
$21-$28/hr OnsiteFull Time
Transwest
Transwest: Family-owned U.S. automotive dealership group selling and servicing trucks, trailers, RVs, specialty vehicles, and related equipment.
High school diploma or equivalent, valid driver's license with good MVR, strong customer service and communication skills, Windows computer proficiency, and ability to pass required screening.
Windows, Google Suite
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System Administrator
Aurora or Texas
$130k-$165k/yr OnsiteFull Time
Innovative Signal Analysis
Innovative Signal Analysis: Defense technology providing real-time signal and image processing systems for government and defense missions.
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
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2mo
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Systems Administrator II
Lakewood, Colorado, United States
$92k-$105k/yr OnsiteFull Time
Developmental Disabilities Resource Center
Developmental Disabilities Resource Center: Colorado nonprofit developmental disability service provider supporting people with intellectual and developmental disabilities and their families.
6+ YOEBachelor's degree, 6+ years systems administration experience, Microsoft 365 and Windows Server expertise, IT service desk experience, Azure and network/security experience preferred.
Windows Server, Microsoft Azure, Microsoft 365, Active Directory, Group Policy, VPN
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4d
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Systems Administrator III
Denver, Colorado, United States
RemoteFull Time
InnovAge
InnovAgeNASDAQ: INNV: Provider of Program of All-Inclusive Care for the Elderly.
6+ YOE6+ years in systems administration, Microsoft 365 infrastructure, data architecture, security, firewalls, servers, Windows servers, and ITIL; bachelor's degree or equivalent experience required.
Microsoft 365, SharePoint, Microsoft Teams, OneDrive, Microsoft Azure Active Directory, SAML, Windows Server, ITIL
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4d
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Systems Administrator II
Aurora or Aurora
$70k-$75k/yr OnsiteFull Time
Oneida Technical Solutions
Oneida Technical Solutions: Tribal-owned IT and cybersecurity contractor serving government and commercial customers in secure, regulated environments.
Bachelor's degree or equivalent experience, 2–6 years in systems administration, Windows/Linux, virtualization, networking, DoD security compliance, Secret clearance, and IAT-Level II certification or higher.
Windows, Linux, VMware, Hyper-V, TCP/IP, DNS, DHCP, DISA STIGs, RMF, CompTIA Security+
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1d
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Systems Administrator Lead
Littleton or Denver
$118k-$160k/yr HybridFull Time
Redwire Space
Redwire Space: Integrated Space and Defense Tech
Requires 8 years of directly related experience or a bachelor's degree in IT with equivalent experience, active Top Secret DOD clearance, CompTIA Security+ certification, Windows/Linux administration, cloud, network, and cybersecurity expertise.
Active Directory, Azure AD, Microsoft Office 365, AWS, Azure, Intune, Group Policy, STIGs, PowerShell, PowerCLI, VLAN, IP Addressing/Subnetting, Windows, Linux
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2w
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Systems Administrator (AHT)
Aurora, Colorado, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Global aerospace and defense technology.
2+ YOEBachelor's degree and 2 years of IT experience; Linux and Windows server administration, VMware, NAS storage, Top Secret clearance, Full Scope Polygraph, and DoD 8570 IAT Level 2 certification required.
Linux, Windows, VMware, NAS Storage, NetApp, ONTAP, Red Hat Enterprise Linux (RHEL), Windows 10, Windows Server, Group Policies (GPOs), Active Directory, Microsoft SharePoint, Splunk, Tenable, Nessus, ESXi, iptables, Wiki
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2w
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Systems Administrator (AHT)
Aurora, Colorado, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Global aerospace and defense technology.
2+ YOEBachelor's degree and 2 years of IT experience; Linux and Windows server administration, VMware, NAS storage, active Top Secret clearance, Full Scope Polygraph, and DoD 8570 IAT Level 2 certification required.
Linux, Windows, VMware, NAS, NetApp, ONTAP, Red Hat Enterprise Linux (RHEL), NISPOM, DCID 6/3, ICD 503, RMF, STIG, JAFAN, JSIG, RAID, Single Sign-On, ESXi, iptables, Windows 10, Windows Server, Group Policies (GPOs), Active Directory, Microsoft SharePoint, Splunk, Tenable, Nessus
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3w
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Senior Systems Administrator
Loveland or Ames
$95k-$105k/yr HybridFull Time
Hach
Hach: Hach is a private water-analysis instrument, reagent, and software manufacturer serving municipal and industrial water operators.
6+ YOEBachelor’s degree or equivalent experience; 6+ years in enterprise infrastructure or systems administration; expertise in Windows Server, Active Directory, DNS/DHCP, Group Policy, VMware, PKI, email authentication, vulnerability remediation, and PowerShell.
Windows Server, Active Directory, VMware, DNS, DHCP, Group Policy, DKIM, SPF, DMARC, SSL/TLS, PKI, PowerShell
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2mo
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Systems Administrator-Cleared
Denver or Folsom
$120k-$165k/yr OnsiteFull Time
Voyager Technologies
Voyager TechnologiesNYSE: VOYG: Develops defense and space technology systems.
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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1d
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System Administrator II
Colorado Springs or Irvine or Denver or Indianapolis or Grand Rapids or Lexington or Los Angeles or Louisville or Texas or San Francisco or United States
$105k-$115k/yr OnsiteFull Time
Trace3
Trace3: Private IT consulting provider serving enterprise and commercial organizations with AI, cloud, data, and cybersecurity services.
3+ YOEBachelor's degree or equivalent experience; 3–5 years of system administration experience; Windows/Linux, enterprise infrastructure, cybersecurity, cloud, automation, and compliance experience; Secret clearance eligibility; DoD 8570 IAT Level II certification.
Windows, Linux, Active Directory, DNS, DHCP, Group Policy, VMware vSphere, ESXi, Hyper-V, Azure, AWS, GCC High, PowerShell, Bash, Python, Ansible, SCCM/MECM, Chef, Puppet, STIG, SCC, IAVA, NIST 800-53, FedRAMP, CMMC, RMF
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Network Administrator
Ann Arbor or Indianapolis or Flint or Denver or Austin
$75k-$90k/yr OnsiteFull Time
Otava
Otava: Private U.S. cloud-services provider serving businesses, service providers, public-sector clients, and enterprises with secure managed cloud solutions.
3+ YOE3+ years enterprise networking experience, hands-on with Fortinet/Cisco, knowledge of BGP/OSPF/STP, cloud networking (Azure/AWS), Windows Server/AD, and strong troubleshooting and communication skills.
Cisco IOS, FortiOS, Clavister OS, Cumulus, VMware vSphere, NSX, Azure, AWS, Windows Server, Active Directory, BGP, OSPF, STP, VoIP
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Network Administrator
Ann Arbor or Indianapolis or Flint or Denver or Austin
$75k-$90k/yr OnsiteFull Time
Otava
Otava: Private U.S. cloud-services provider serving businesses, service providers, public-sector clients, and enterprises with secure managed cloud solutions.
3+ YOE3+ years enterprise networking experience; strong TCP/IP knowledge; experience with Cisco/Fortinet/Cumulus; BGP/OSPF/VLANs; Windows Server/AD; cloud networking; industry certifications preferred.
Fortinet, Cisco IOS, Fort iOS, Clavister OS, Cumulus, VMware vSphere, NSX, Azure, AWS, Windows Server, Active Directory
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1d
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Systems Administrator
Aurora or Colorado
$80k-$130k/yr OnsiteFull Time
TekSynap
TekSynap: Technology moving at the speed of thought.
3+ YOERequires a bachelor's degree in IT, computer science, or related field, 3 years of Tier II/III escalation experience preferred, CompTIA Security+, Windows training, and active Top Secret/SCI with CI polygraph clearance.
Linux, Windows, Apple, ServiceNow
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3mo
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System Administrator III
Denver, Colorado, United States
HybridFull Time
Onward Energy
Onward Energy: Independent U.S. power generator owning and operating utility-scale wind, solar, and natural-gas projects for electricity customers.
7+ YOE7+ years system administration experience with Windows Server, Active Directory, virtualization, Azure, Microsoft 365, Intune, Hyper-V and strong troubleshooting and documentation skills.
Active Directory, Group Policy, DNS, DHCP, Microsoft Azure, Microsoft 365, Office 365, Entra, Exchange Online, SharePoint Online, Teams, Intune, Hyper-V, SAML, SCADA, PowerShell, Azure CLI
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Systems Administrator
Aurora, Colorado, United States
$128k-$214k/yr OnsiteFull Time
ManTech International
ManTech International: Advancing the future of defense through innovative technology.
15+ YOEBachelor's degree in a technical discipline or 5 additional years of experience; 15+ years in systems administration or related IT; RHEL experience; TS/SCI with polygraph required.
Red Hat Enterprise Linux (RHEL), Microsoft Windows, AWS
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2w
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IT System Administrator
Westminster, Colorado, United States
$71k-$90k/yr OnsiteFull Time
GeoStabilization International
GeoStabilization International: Private geohazard mitigation contractor providing design-build landslide repair, rockfall mitigation, grouting, and infrastructure stabilization across North America.
Associate's or bachelor's degree in a related field or equivalent experience; Windows Server, cloud, Azure, Active Directory, networking, virtualization, backup, troubleshooting, and security knowledge required.
Windows Server, Azure, Active Directory, Group Policy, DNS, DHCP, Microsoft Exchange, MDM, Microsoft Intune, VMware, Hyper-V, TCP/IP, VLANs, Aruba, Dell, HP, FortiGate, Veeam, SolarWinds, Microsoft Azure, AWS, Google Cloud, PowerShell, Azure AD/Entra ID
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