25 senior it systems administrator jobs at 21 companies in Bailey, CO
9h
Save
Mark Applied
Hide
Senior IT Systems Administrator
Denver or Austria or Hong Kong or China or Korea or Japan
$95k-$112k/yr HybridFull Time
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
1w
Save
Mark Applied
Hide
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
4w
Save
Mark Applied
Hide
IT Systems Administrator Senior - IT
Greenwood Village, Colorado, United States
$105k-$115k/yr OnsiteFull Time
5+ YOE5+ years administering enterprise Windows and Linux server environments, virtualization (VMware vSphere/Hyper-V), Active Directory, DNS/DHCP, backups/DR, networking fundamentals, and security best practices.
VMware vSphere, Hyper-V, Windows Server, Linux, Active Directory, DNS, DHCP, Group Policy
1mo
Save
Mark Applied
Hide
Senior IT Administrator
Westminster, Colorado, United States
$94k-$112k/yr OnsiteFull Time
5+ YOE5+ years IT support/systems administration, BS preferred, strong AD/Azure AD/Entra ID, Microsoft 365 and AWS experience, Intune/MDM, endpoint security, advanced troubleshooting, and documentation skills.
Microsoft Outlook, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Microsoft Purview, Microsoft Entra ID, Active Directory, Intune, MDM, AWS, VPN
1mo
Save
Mark Applied
Hide
Senior IT & Network Systems Administrator (Part-Time)
Greenwood Village, Colorado, United States
$95k-$130k/yr HybridPart Time
10+ YOE10+ years IT/systems/network/cloud/security experience. Hands-on Microsoft 365/Azure/Entra/Intune/Defender/Sentinel, Juniper networking, AWS services, endpoint management, backups, and scripting (PowerShell, JavaScript, Python).
Microsoft 365, Azure, Entra ID, Intune, Purview, Defender, Sentinel, Autopilot, Windows Update, Windows 11, AWS, IAM, S3, CloudFront, CodeDeploy, Juniper, JunOS, SharePoint, Commvault, Zoom for Business, Zoom Rooms, Logitech, Jamf, Rippling, PowerShell, JavaScript, Python
2mo
Save
Mark Applied
Hide
Senior Systems Administrator - IT Engineer
Golden, Colorado, United States
$100k-$120k/yr OnsiteFull Time
4+ YOEBachelor's in IT or equivalent, 4+ years systems/network admin experience, Azure Fundamentals cert, experience with ESXi, AWS, Kubernetes, Okta, scripting (Bash, Python, PowerShell), and familiarity with NIST frameworks.
ESXi, VMware, Microsoft Azure, SharePoint Online, Kubernetes, Okta, Okta Flows, Bash, Python, PowerShell, AWS, Terraform, Office 365, Intune, Jamf Pro
6d
Save
Mark Applied
Hide
Coordinator-IT Operations Administrator
Lakewood, Colorado, United States
$81k-$121k/yr OnsiteFull Time
5+ YOEAssociate degree or equivalent experience; 5–7 years in accounting support, administration, procurement, finance, or operations; advanced Microsoft Office skills and experience with enterprise business systems.
Microsoft Excel, Microsoft Word, Microsoft Outlook, Microsoft PowerPoint, Microsoft Teams, Microsoft SharePoint, ServiceNow, Jira Service Management, Ivanti, Freshservice, Oracle, GP Dynamics, Essbase, Power BI, ERP, SaaS
1w
Save
Mark Applied
Hide
Sr IT Systems Engineer
Louisville, Colorado, United States
$136k-$187k/yr OnsiteFull Time
8+ YOEBachelor's degree or equivalent experience, 8+ years in systems administration, 3+ years with AWS or Azure, infrastructure design, security, project methodologies, networking, automation, and technical leadership.
AWS, Azure, Docker, Kubernetes, Jenkins, Ansible, Puppet, Chef, Microsoft Certified: Azure Solutions Architect Expert
1w
Save
Mark Applied
Hide
Coordinator-IT Operations Administrator
Lakewood, Colorado, United States
$81k-$121k/yr OnsiteFull Time
5+ YOEAssociate degree or equivalent experience and 5–7 years in accounting support, procurement, finance, business operations, or related work. Requires advanced Microsoft Office skills, including Excel, and enterprise systems experience.
Microsoft Excel, Microsoft Word, Microsoft Outlook, Microsoft PowerPoint, Microsoft Teams, Microsoft SharePoint, ERP, ServiceNow, Jira Service Management, Ivanti, Freshservice, Oracle, GP Dynamics, Essbase, Power BI, LAN
2mo
Save
Mark Applied
Hide
Manager, IT Systems Administration & Operations
Broomfield, Colorado, United States
$105k-$125k/yr HybridFull Time
5+ YOE2+ Mgmt5+ years systems/endpoint administration, 2+ years leadership, experience with Intune/JAMF/endpoint platforms, Windows/Linux servers, Active Directory, PowerShell, VMware; bachelor's in CS/IS or equivalent experience preferred.
Microsoft Endpoint Manager (Intune), Patch-my-PC, JAMF, Active Directory, PowerShell, VMware, Office 365, Azure, Exchange, SharePoint, Python, Bash, EDR
4w
Save
Mark Applied
Hide
IT Systems Engineer
Boulder, Colorado, United States
$85k-$110k/yr OnsiteFull Time
5+ YOE5+ years IT systems experience with Associate (required) or Bachelor (preferred). Strong Microsoft cloud (Entra, Azure), Intune, Defender, JAMF, Windows/macOS administration, networking, scripting (PowerShell/Python/Bash), DR and CSV experience.
Microsoft Entra, Microsoft Azure, Microsoft Intune, Microsoft Defender, JAMF, PowerShell, Python, Bash, Active Directory, DNS, DHCP, SIEM, IDS
2w
Save
Mark Applied
Hide
IT Support & Systems Analyst - CO
Niwot, Colorado, United States
$70k-$95k/yr OnsiteFull Time
10+ YOE10+ years IT experience, associates degree, Windows/Linux administration, networking, EM/ERP support, scripting/development (VB.NET,C#,Python,PowerShell,SQL), GitLab, BarTender, Rapid7; strong communication and troubleshooting.
Active Directory, Duo Federal 2FA, PaperCut, Zoom, Infor CloudSuite Industrial ERP, Rapid7 SIEM, Windows, Linux, Ubiquiti, SonicWall, BarTender Designer, GitLab, VB.NET, C#, Python, PowerShell, SQL, PHP
5d
Save
Mark Applied
Hide
Systems Engineer-IT Stf - E4
Littleton or Colorado
$118k-$219k/yr OnsiteFull Time
Requires active TS/SCI clearance with CI poly, U.S. citizenship, Linux administration experience, RHEL expertise, vulnerability remediation, Security+ eligibility, and ability to lift 30 pounds.
Linux, Unix, Red Hat Enterprise Linux (RHEL), Nessus, McAfee, WSUS, SCCM, Ivanti, Shavlik, Blade Logic, Splunk, ACAS, SCAP, HBSS, ELK Stack, Prometheus, TCP/IP, HTTP, SAN, NAS, Ceph, Ansible, Perl, Bash, PowerShell, Active Directory, OpenShift, Kubernetes, Docker, Podman, VMware, Horizon, vSphere, vCenter, vCloud, vRealize, NSX, vSAN, VXRail, NetApp, EMC
1w
Save
Mark Applied
Hide
IT Engineer
United States or Denver or San Francisco or Alaska or Arkansas or Delaware or Hawaii or Maine or Mississippi or New Mexico or Oklahoma or South Dakota or Vermont or Wisconsin or Rhode Island
$96k-$125k/yr RemoteFull Time
3+ YOE3+ years in systems administration, IT engineering, or senior IT support; expertise in Okta, macOS administration, automation, Zero Trust, and IT security fundamentals.
Okta Workflows, Jamf, macOS, Okta, Single Sign-On (SSO), Privileged Access Management (PAM), Robotic Process Automation (RPA), Zero Trust, SOC2, HIPAA, HITRUST, API keys, Data Loss Prevention (DLP), OpenAI, AWS, Google Gemini
2w
Save
Mark Applied
Hide
Senior IT Imaging Applications Analyst
Aurora, Colorado, United States
$102k-$153k/yr HybridFull Time
5+ YOEBachelor's degree and 5+ years IT experience; advanced PACS/enterprise imaging knowledge; system administration, troubleshooting, vendor management, and project leadership skills.
PACS, GE Viewpoint, Vendor Neutral Archive (VNA)
2w
Save
Mark Applied
Hide
IT Manager
Denver or Fairfield or Seattle
$100k-$150k/yr OnsiteFull Time
5+ YOE5+ years corporate IT experience with Microsoft 365/Entra ID/Intune, systems administration, endpoint management, networking, cybersecurity, vendor management, and IT project delivery.
Microsoft 365, Intune, Entra ID, Exchange Online, Teams, SharePoint Online, OneDrive, PowerShell, Microsoft Graph, Azure DevOps, Jira
2mo
Save
Mark Applied
Hide
IT Manager
Charlotte or Denver or New York City
$100k-$150k/yr HybridFull Time
7+ YOE7+ years IT engineering experience, proven team leadership, expertise in identity/endpoint/SaaS administration, Office 365, cloud platforms, ticketing systems, scripting, and incident response.
Okta, OneLogin, Auth0, Intune, Microsoft Office 365, AWS, Azure, Google Cloud, Jira Service Desk, Bash, PowerShell, Python
6d
Save
Mark Applied
Hide
Manager, IT (M&P)
Wheat Ridge, Colorado, United States
$157k-$172k/yr OnsiteFull Time
7+ YOERequires 7+ years of hands-on IT support or systems administration, lead experience, Windows and Microsoft 365 administration, vendor and project management, and a bachelor's degree or equivalent practical experience.
Azure, AWS, Microsoft 365, Exchange Online, Teams, Microsoft SharePoint, OneDrive, Entra ID, Windows, iPaaS, API gateway, EDI/AS2/VAN, Windows Server, Active Directory (AD), Group Policy, DNS/DHCP, Windows 10, Windows 11, Microsoft Excel, Google Cloud, VPN, SOX, NIST, ISO 27001, ITIL, ERP, PMP, CISSP
1mo
Save
Mark Applied
Hide
Internal IT Lead
Framingham or Denver
$90k-$115k/yr HybridFull Time
5+ YOE1+ Mgmt5+ years hands-on IT experience with 1+ year leading or mentoring; system administration of Microsoft 365, Azure, Windows Server; Fortinet and Sentinel One experience; PSA/RMM ticketing experience (ConnectWise).
Microsoft 365, Azure, Windows Server, Active Directory, Fortinet, Sentinel One, Cisco, ConnectWise, PSA, RMM, CMDB, PIM/PAM
3w
Save
Mark Applied
Hide
Mission IT Operator
Denver, Colorado, United States
$58k-$117k/yr OnsiteFull Time
Active TS/SCI with Poly, DODI 8570.01-M IAT Level II/Security+, system administration on UNIX/Linux/Windows, 24x7 shift experience, strong communication and troubleshooting skills.
UNIX, Linux, Windows, VMware, HP OpenView, CA Concord
Explore Jobs