46 infrastructure administrator jobs at 32 companies in Lyons, CO
2w
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AWS Infrastructure Administrator
Boulder or Princeton
$121k-$147k/yr OnsiteFull Time
5+ YOEBachelor's degree; 5+ years AWS experience; RHEL, web app administration, Terraform, Ansible, Apache, SSL, and database (PostgreSQL) experience; ability to obtain DoD clearance.
EC2, RDS, S3, ELB, AWS CloudWatch, AWS Systems Manager, Terraform, Ansible, Apache HTTP, Apache Tomcat, PostgreSQL, GitLab, GitLab CI/CD, Docker, Hyper-V, VMWare, Prometheus, Grafana
4w
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Infrastructure Administrator- Westminster, CO
Westminster, Colorado, United States
$80k-$100k/yr HybridFull Time
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
2w
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Senior IT Infrastructure Administrator
Littleton, Colorado, United States
$100k-$150k/yr OnsiteFull Time
5+ YOE5+ years enterprise infrastructure experience supporting Microsoft 365, Azure, AWS, Nutanix AHV, Windows/Linux servers, networking, security, PowerShell automation, on-call support, and GovCloud compliance.
Microsoft 365, Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Microsoft Entra ID (Azure AD), Microsoft Intune, Microsoft Azure, Amazon Web Services (AWS), Nutanix AHV, Windows Server, Linux, Active Directory, DNS, DHCP, Group Policy, PowerShell, Cisco Identity Services Engine (ISE), GovCloud
1mo
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Infrastructure/Systems Administrator
Sterling or Austin or Denver
$105k-$231k/yr OnsiteFull Time
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
1mo
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Systems Administrator, Tech Infrastructure
Saint Petersburg or Denver or Southfield
$60k-$100k/yr OnsiteFull Time
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.
1mo
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Infrastructure/Systems Administrator
Sterling or Austin or Denver
$105k-$231k/yr OnsiteFull Time
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
2w
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IT Infrastructure Engineer
Petaluma or Denver
$120k-$145k/yr HybridFull Time
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
1d
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Infrastructure Engineer (Systems and DevOps)
Centennial, Colorado, United States
$115k-$145k/yr HybridFull Time
5+ YOERequires 5–8+ years in systems administration, production infrastructure, domains, cloud services, virtualization, networking, certificates, and DevOps tooling, with independent operational ownership.
VMware, Proxmox, Windows, Linux, Active Directory, DNS, LDAP, Python, Bash, Jenkins, GitLab, Atlassian, Kubernetes, SAST, SCA, AWS, Microsoft Azure, Google Cloud
5d
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System Administrator
Aurora or Texas
$130k-$165k/yr OnsiteFull Time
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
1w
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Infrastructure & Operations Engineer
Denver, Colorado, United States
$110k-$125k/yr HybridFull Time
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
1w
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Senior Network Administrator
Denver, Colorado, United States
$125k-$146k/yr HybridFull Time
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
6d
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Senior Systems Administrator
Loveland or Ames
$95k-$105k/yr HybridFull Time
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
2mo
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LEAD ADMINISTRATOR L2
Denver, Colorado, United States
$80k-$158k/yr OnsiteFull Time
15+ YOE5+ MgmtAI-first delivery leader with extensive infrastructure, data center, and networking experience; strong stakeholder management, DevOps/SRE knowledge, Jira proficiency, and proven ability to drive AI/automation-led productivity improvements.
Salesforce, ServiceNow, Jira, AIOps, GenAI
2w
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Infrastructure Engineer - Elasticsearch (ELK) Team
Pittsburgh or Phoenix or Lakewood or Birmingham or Strongsville or Farmers Branch
$86k-$173k/yr OnsiteFull Time
3+ YOEExperience with Elasticsearch, Linux administration, Ansible, Git, shell or Python scripting, package management, monitoring/logging, and production support; typically 3+ years industry experience; bachelor's degree preferred.
Elasticsearch, Linux, Ansible, GIT, Python, Shell Scripting
2mo
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Manager, Operations & Infrastructure
Centennial, Colorado, United States
$126k-$230k/yr OnsiteFull Time
13+ YOEBachelors/Masters in business/finance or equivalent, 13+ years progressive project administration experience (≥7 years in engineering/scientific environment), expertise in project planning/scheduling, SAP/MS Project/Procore experience, strong leadership and communication, travel 25%-50%.
SAP, Microsoft Project, Procore
1mo
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Senior Contracts Administrator
Denver, Colorado, United States
$97k-$120k/yr OnsiteFull Time
10+ YOEBachelor's degree and 10+ years contracting experience reviewing, redlining, negotiating, and administering contracts in environmental, technical, or infrastructure markets; ability to identify business risk, obtain certificates of insurance, and coordinate internal stakeholders.
2w
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Staff Network Administrator
Boulder, Colorado, United States
$135k-$175k/yr OnsiteFull Time
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
1mo
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Linux Infrastructure Engineer II/III
Golden, Colorado, United States
$84k-$181k/yr OnsiteFull Time
2+ YOERelevant Bachelor's degree and 2+ years (Level II) or 5+ years (Level III) Linux administration experience; container and orchestration experience (Docker, Podman, Kubernetes); strong scripting, networking, security, and problem-solving skills; US citizenship and ability to obtain DOE access/PIV required.
Linux, Docker, Podman, Kubernetes, Git, Ansible, OpenLDAP, RHEL IdM/IPA, VMware, OpenStack, Proxmox, OpenShift
5d
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SCADA OT Administrator
Brighton, Colorado, United States
$43-$58/hr OnsiteFull Time
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
6d
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Senior IT Systems & Security Administrator
Denver, Colorado, United States
$100k-$130k/yr OnsiteFull Time
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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