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46 infrastructure administrator jobs at 34 companies in Greeley, CO

1mo
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Infrastructure Administrator- Westminster, CO
Westminster, Colorado, United States
$80k-$100k/yr HybridFull Time
Krayden
Krayden: Distributes specialty chemicals and provides technical engineering solutions.
5+ YOE5–8 years administering enterprise infrastructure; experience with Microsoft technologies, cloud, networking, virtualization, identity, and automation; bachelor's degree or equivalent; strong troubleshooting and communication skills.
Microsoft 365, Intune, Entra ID, Purview, Exchange Online, Microsoft Teams, SharePoint Online, Microsoft Azure, Active Directory, Group Policy, Windows Server, Hypervisor, Microsoft Defender, SentinelOne, PowerShell
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Infrastructure/Systems Administrator
Sterling or Austin or Denver
$105k-$231k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
10+ YOEActive TS/SCI with polygraph, bachelor’s degree or equivalent, 10+ years related experience, extensive Linux experience, systems administration, patching, troubleshooting, documentation, and collaboration skills.
Linux, Puppet, Satellite, IPA, Nagios, Net App
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Systems Administrator, Tech Infrastructure
Saint Petersburg or Denver or Southfield
$60k-$100k/yr OnsiteFull Time
Raymond James
Raymond JamesNew York Stock Exchange: RJF: Provides wealth management, investment banking, and retail banking services.
0+ YOETranslate functional specs, document interfaces, analyze and validate requirements, produce reports, and support system development; bachelor’s degree in accounting, business administration, or computer and information science required.
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Infrastructure/Systems Administrator
Sterling or Austin or Denver
$105k-$231k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
10+ YOEActive TS/SCI with poly, bachelor's or equivalent, 10+ years related experience, extensive Linux experience, strong troubleshooting, project experience, and ability to work off-hours.
Linux, Puppet, Satellite, IPA, Nagios, Net App
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3w
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IT Infrastructure Engineer
Petaluma or Denver
$120k-$145k/yr HybridFull Time
Spheros Environmental
Spheros Environmental: Environmental consulting firm providing integrated science-based sustainability solutions.
8+ YOE8+ years in IT support/systems administration in Microsoft 365 environments; expertise with endpoint security, networking, Azure/on‑prem infrastructure, documentation, and incident response.
Entra, Intune, Veeam, VMware vCenter, Windows Server, Azure Files, Cloudflare One, Unifi, Cisco, SentinelOne, KnowBe4 Defend, Deep Seas, Microsoft 365, Microsoft Defender for Endpoint, Cloudflare WARP, AWS EC2, Jira
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1w
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Senior Infrastructure Lead
Amarillo or Dallas or Houston or Lubbock or Denver or Oklahoma City or Albuquerque
$140k-$160k/yr RemoteFull Time
6 Degrees Health
6 Degrees Health: Healthcare payment integrity and cost containment solutions provider.
10+ YOERequires 10+ years in infrastructure engineering or administration, cloud and on-premises migration experience, Dell HCI, Cisco firewalls, Windows Server, SQL Server, Azure, monitoring, troubleshooting, documentation, and communication skills.
Dell HCI, Cisco, Windows Server, SQL Server, Azure, Azure IaaS, Azure PaaS, Azure AD, Azure Storage, Azure Backup, Azure Site Recovery, Azure Monitor, Cisco firewalls, PowerShell, Python, Manage Engine, Wazuh, PagerDuty, Jira, Rapid 7, Site24x7, Lan Sweeper, Teramind, Microsoft Office
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2w
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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
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System Administrator
Denver, Colorado, United States
$86k-$104k/yr HybridFull Time
Strive Health
Strive Health: Provides value-based kidney care using predictive analytics and technology.
2+ YOEHigh school diploma/GED, 2+ years enterprise systems administration, scripting, cloud infrastructure, Entra ID, Iru, Intune, SaaS, change management, Automox, and Agile/CI/CD experience; active driver's license required.
PowerShell, Python, AWS Cloud, Microsoft Entra ID, Microsoft 365, Microsoft SharePoint, Microsoft Intune, Azure Automation, Defender, Iru, Linux, Windows Server, Automox, GitLab, CI/CD, Scrum, Agile, HIPAA, SOC, HITRUST, NIST
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Information Technology Infrastructure Engineer - VMware and Automation
Denver, Colorado, United States
HybridFull Time
Colorado PERA
Colorado PERA: Manages retirement benefits for Colorado public employees.
4+ YOEFour years in a technical role or equivalent education and experience, VMware infrastructure expertise, PowerShell scripting, Infrastructure as Code, Microsoft domain administration, security, monitoring, and disaster recovery skills.
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3d
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Systems Administrator I
Thornton, Colorado, United States
$62k-$93k/yr OnsiteFull Time
Adams 12 Five Star Schools
Adams 12 Five Star Schools: Operates K-12 public schools in the northern Denver area.
1+ YOEAssociate degree in information systems, computer science, systems administration, or related field, or two years of relevant experience substituted. One to two years of IT infrastructure experience preferred; Windows/Linux knowledge required.
Windows, Linux, VMware
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Infrastructure & Operations Engineer
Denver, Colorado, United States
$110k-$125k/yr HybridFull Time
CloudShare
CloudShare: Provides cloud-based virtual labs for software demos and training.
Proven systems administration/production operations experience with Windows/Linux, networking, cloud/datacenter, scripting/APIs, Google Workspace and Microsoft 365 administration, SOC2/compliance experience, and willingness to join on-call rotation.
Google Workspace, Microsoft 365, JumpCloud, HiBob, VMware
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2w
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Senior Systems Administrator
Loveland or Ames
$95k-$105k/yr HybridFull Time
Hach
HachNYSE: VLTO: Manufactures analytical instruments and reagents for global water quality testing.
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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2w
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Senior Network Administrator
Denver, Colorado, United States
$125k-$146k/yr HybridFull Time
Colorado Coalition for the Homeless
Colorado Coalition for the Homeless: Provides housing, healthcare, and support services to homeless individuals.
10+ YOEDesign, implement, and manage Cisco-based network infrastructure; 10+ years network administration experience; CCNP or 5+ yrs equivalent; strong TCP/IP, OSPF/BGP, security, Microsoft Terminal Services skills.
Cisco, Microsoft Terminal Services, Gateway Broker, RD Web
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2mo
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Systems Administrator
Cheyenne, Wyoming, United States
HybridFull Time
Blue Cross Blue Shield of Wyoming
Blue Cross Blue Shield of Wyoming: Provides health, dental, and vision insurance plans in Wyoming.
2+ YOE2+ years related IT experience, associate degree in IT (or equivalent experience). Must administer Linux and Windows servers, VMware ESXi, Microsoft infrastructure, cloud services, backups, security, and produce system documentation.
VMware ESXi, VMware, Microsoft Azure, Microsoft Office 365, Microsoft Active Directory, Linux, Windows Server, Microsoft 365
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2d
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Senior IT Systems Administrator
Denver or Austria or Hong Kong or China or Korea or Japan
$95k-$112k/yr HybridFull Time
BOA Technology
BOA Technology: Designs and manufactures precision fit systems for athletic equipment.
5+ YOERequires 5+ years in systems administration or infrastructure engineering, enterprise networking, Microsoft 365, Entra ID, Azure or AWS, cybersecurity, multi-OS environments, and advanced troubleshooting. Bachelor's degree preferred.
Microsoft 365, Microsoft Entra ID, Active Directory, Azure, AWS, Windows Hyper-V, Proxmox, Fortinet, FortiClient VPN, NIST Cybersecurity Framework (CSF), Microsoft Intune, Iru, Microsoft Defender for Endpoint, Veeam, RTO/RPO, SOX, IT Service Desk, Microsoft, Cisco CCNA, CompTIA Security+, AWS Certified Solutions Architect
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2d
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Systems Administrator Senior
Westminster, Colorado, United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA.: Produces advanced defense, aerospace, and information security systems.
4+ YOEBachelor’s degree and 4+ years of related experience, or equivalent technical experience; Secret clearance; Windows, VMware, Active Directory, networking, PowerShell, and infrastructure support expertise.
Microsoft Windows, VMware, vSphere ESXi, vCenter, vRealize Operations Manager, Microsoft Active Directory, PowerShell, Linux, AutoCAD, SolidWorks, ANSYS HFSS, DNS, DHCP, TCP/IP
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3d
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Network Administrator 3
Centennial or Denver
$100k-$166k/yr OnsiteFull Time
United Launch Alliance
United Launch Alliance: Aerospace providing space launch services for satellites.
4+ YOERequires a bachelor's degree in STEM or four years related experience, 4+ years administering enterprise networks, routing and switching expertise, network security, troubleshooting, and infrastructure lifecycle management.
TCP/IP, VLAN, VPN, Quality of Service (QoS), OSPF, BGP, Cisco, Palo Alto Networks, Cisco ASA, Wireshark, NetFlow, IPsec, SSL VPN, SolarWinds, SD-WAN, Azure, AWS, Python, Ansible, PowerShell, Cisco ISE, VoIP
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4w
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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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2w
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SCADA OT Administrator
Brighton, Colorado, United States
$43-$58/hr OnsiteFull Time
City of Brighton
City of Brighton: Providing municipal services and public safety to Brighton residents.
3+ YOEBachelor's degree or equivalent education and experience; 3+ years supporting SCADA, industrial control systems, OT networks, servers, infrastructure, virtualization, cybersecurity, or municipal utility technology. Colorado driver's license required.
Microsoft Windows, SCADA, VMware, HMI, SQL, PLC, Ethernet/IP, Modbus TCP, OPC UA, Microsoft SQL, Microsoft Active Directory, TCP/IP, IPv4, DHCP, DNS, NAT, VPN, VLAN, LAN, WAN, Internet, Ignition SCADA, Windows Server, Veeam, Palo Alto, Cisco, Microsoft Administration
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2w
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Senior IT Systems & Security Administrator
Denver, Colorado, United States
$100k-$130k/yr OnsiteFull Time
EnduroSat
EnduroSat: Manufacturer of modular software-defined satellites and space infrastructure.
5+ YOE5+ years in systems administration, infrastructure, IT operations, or cybersecurity; bachelor's degree or equivalent; expertise in Microsoft, Azure Government, AWS GovCloud, networking, identity, endpoint security, and compliance.
Microsoft Windows Server, Microsoft 365, Microsoft GCC High, Microsoft Exchange Online, Microsoft SharePoint Online, Microsoft Teams, Microsoft OneDrive, Microsoft Intune, Microsoft Entra ID, Microsoft Azure Government, AWS GovCloud, Active Directory, Group Policy, DNS, DHCP, TCP/IP, VLANs, VPNs, EDR, Microsoft Defender, Microsoft Sentinel, Security Center, AES, RSA, ECC, TLS/SSL, FIPS 140-2/140-3, CMMC, NIST 800-171, FedRAMP, ITAR, DFARS
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