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46 infrastructure administrator jobs at 38 companies in Aurora, 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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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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1w
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Infrastructure Engineer (Systems and DevOps)
Centennial, Colorado, United States
$115k-$145k/yr HybridFull Time
Quantum
QuantumNASDAQ: QMCO: Provides data storage and management solutions for unstructured data.
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
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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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4d
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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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3w
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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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6d
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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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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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4w
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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
PNC Financial Services
PNC Financial ServicesNYSE: PNC: Provides banking, lending, and investment services to customers.
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
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5d
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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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5d
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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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6d
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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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2mo
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Manager, Operations & Infrastructure
Centennial, Colorado, United States
$126k-$230k/yr OnsiteFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
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
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Senior Contracts Administrator
Denver, Colorado, United States
$97k-$120k/yr OnsiteFull Time
APTIM
APTIM: Provides environmental, resilience, and infrastructure engineering solutions.
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.
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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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