31 windows system administrator jobs at 28 companies in Crestline, CA
3w
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IT System Administrator
Irvine, California, United States
$97k-$119k/hr OnsiteFull Time
7+ YOE7+ years systems administration and infrastructure experience supporting Windows Server, virtualization, cloud, networking and OT (PLCs/SCADA); Bachelor\u0002s or equivalent experience; preferred networking and security certifications.
Windows Server, Active Directory, DNS, DHCP, VMware, Hyper-V, Azure, Microsoft M365, PLCs, SCADA, HMI, TCP/IP, VLANs, Firewall, VPN
1mo
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System Administrator - Level 4
Pasadena, California, United States
$107k-$160k/yr OnsiteFull Time
5+ YOE5+ years systems administration experience supporting mixed macOS/Windows/Linux environments; strong identity/access, MDM, networking, troubleshooting, documentation, and automation skills (Python/Bash/PowerShell).
Apple Business Manager, Google Workspace, Microsoft Entra ID, Intune, Python, Bash, PowerShell, MDM, SSO, SAML, SCIM, MFA, RBAC, VPNs, VLANs, Wi-Fi, Linux, NIST 800-171, CMMC
2mo
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System Engineer- ArcGIS
Redlands or St. Louis or Vienna
$121k-$198k/yr OnsiteFull Time
8+ YOE8+ years experience deploying and administrating enterprise ArcGIS or comparable systems; Windows/Linux sysadmin; scripting (Python, PowerShell, JavaScript, C#); RDBMS and SQL; Top Secret/SCI clearance and US citizenship; Bachelor\u0002s in STEM.
ArcGIS, ArcGIS Enterprise, ArcGIS Desktop, ArcGIS Online, Portal for ArcGIS, ArcGIS Runtime, RDBMS, SQL, SQL Server, Oracle, PostgreSQL, Python, PowerShell, Javascript, C#, Windows, Linux
1w
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Systems Administrator II
Pasadena, California, United States
$123k-$127k/yr OnsiteFull Time
1+ YOEBachelor's degree plus 3 years or master's plus 1 year of systems administration experience; active TS/SCI clearance; current IAT/IAM 8140 certification; Windows and Linux administration experience.
Windows, Linux, Windows VMs, Linux VMs, Windows servers, Linux servers, Windows workstations, Linux workstations, help desk ticketing system
3w
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Senior Systems Administrator
Anaheim, California, United States
$85k-$105k/yr OnsiteFull Time
5+ YOE5+ years systems administration experience with Microsoft 365, Active Directory, Windows, networking, endpoint security, backups, and documentation; strong troubleshooting and communication skills.
Microsoft 365, Active Directory, Windows, DNS, DHCP, VPN, PowerShell, SIEM, EDR/MDR
1mo
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Systems Administrator
Victorville, California, United States
$79k-$100k/yr RemoteFull Time
5+ YOE5+ years systems administration experience supporting Microsoft Windows environments; account management, troubleshooting, hardware/software installation, patching, backups; BS in IT or equivalent experience; certification like CompTIA Security+/Network+/A+, MCP, or MCSA; travel required.
Microsoft Windows, Microsoft Office
6d
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Network Administrator Sr.
Riverside, California, United States
OnsiteFull Time
7+ YOERequires 7+ years of IT experience, 4+ years in network or system administration, CompTIA Server+ or Network+ or equivalent, CA driver's license, and experience with Windows Server, networking, security, and PowerShell.
Windows Server, Active Directory, SAN, TCP/IP, DNS, DHCP, VPN, PowerShell, Firewalls, IDS, Endpoint Protection, IPS
1w
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IT Systems Administrator II
Garden Grove, California, United States
OnsiteFull Time
2+ YOERequires 2+ years in Windows systems or network administration and two or more relevant certifications, such as CompTIA A+, CompTIA Network+, MCSA, or CCNA. Bachelor's degree or equivalent experience desired.
Active Directory, Entra ID, Hyper-V, VMware, Microsoft 365, Zoom Phone, Contact Center, Google Workspace, Windows Server, OS X, Linux, UniFi Access Points, UniFi Cameras, Checkpoint Harmony Endpoint Protection, Checkpoint Harmony Email & Collaboration, Ubiquiti UniFi, Exchange Online, Windows 365, Windows Sandbox
1d
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Systems Administrator Lead
San Bernardino, California, United States
$110k-$137k/yr OnsiteFull Time
10+ YOE10+ years supporting enterprise Windows servers; expertise in Windows Server, Linux, Azure, Microsoft 365, Active Directory, virtualization, storage, networking, recovery, and infrastructure leadership. California driver's license required.
Windows Server, Red Hat Enterprise Linux, Unix, Azure, Microsoft 365, Entra ID, Intune, Microsoft Copilot, vLLM, Active Directory, Group Policy, VMware, Hyper-V, Docker, Kubernetes, LAN/WAN, SAN, DNS, DHCP, Exchange Online
22h
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Systems Administrator SME
Corona or Norco
$115k-$135k/yr OnsiteFull Time
5+ YOERequires Secret clearance, IAT Level II certification, and extensive systems administration experience; qualifying paths include high school/GED plus 12+ years, bachelor's plus 8+ years, or master's plus 5+ years.
Windows, Linux, Unix, Microsoft Office Suite, firewalls, anti-virus, intrusion detection
1mo
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System Support Analyst (TEMP)
Irvine, California, United States
$23-$25/hr OnsiteFull Time
1+ YOE1–3 years help desk/system administration experience, strong communication and customer service, bachelor's in CS/Business or equivalent, MS Office proficiency, ability to support retail POS and networking.
Aptos Retail Point of Sale, Windows OS, Microsoft Products, TCP/IP, DNS, DHCP, Wireless (802.11a/b/g)
3w
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Systems Administrator II
Anaheim, California, United States
OnsiteFull Time
3+ YOE3+ years IT user support experience preferred; working knowledge of TCP/IP, DNS, DHCP; experience with Windows servers, ITSM; bachelor’s degree or equivalent; ability to lift 25 lb and travel occasionally.
Windows, OT, IoT, TCP/IP, DNS, DHCP, ITSM, ITIL 4 Foundation
2mo
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Junior IT Systems Administrator (part-time)
Pasadena or United States
$35-$45/hr HybridPart Time
1+ YOE1–3 years systems administration or IT support experience; experience with Active Directory/Microsoft Entra ID, MDM (Addigy, Jamf, Intune), Windows/macOS endpoints, networking fundamentals, cloud services, and ability to travel to Pasadena-area sites and lift up to 50 lbs.
Windows, macOS, Active Directory, Microsoft Entra ID (Azure AD), Addigy, Jamf, Microsoft Intune, TCP/IP, DNS, DHCP, VLANs, Windows 10/11, Windows Server, Cisco, Fortinet, pfSense, Meraki, Microsoft 365, Google Workspace, Exchange Online, Microsoft Teams, SharePoint, Microsoft Intune/Endpoint Manager, Freshservice, Freshworks, ServiceNow, Ubuntu, RHEL, CentOS, PowerShell, Bash, VMware vSphere, Microsoft Hyper-V, Proxmox, Microsoft Azure, Amazon Web Services (AWS), Google Cloud Platform (GCP)
10h
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Administrator (Support & Operations)
Orange, California, United States
$51k-$75k/yr OnsiteFull Time
5+ YOEBachelor's degree in computer science or information technology, 5+ years of IT support or service delivery experience, bilingual English and local language skills, strong Microsoft, operating system, hardware, network, and customer support expertise.
ServiceNow, CMDB, Microsoft Office 365, Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Windows, Mac Operating System, DHCP, DNS, LAN, BYOD, iOS, Android, ITIL, CompTIA A+, Cisco
1d
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IT & Systems Administrator - SoCal Region
San Diego or Vista or San Juan Capistrano or Redondo Beach or Orange or Oceanside or California
$38-$46/hr HybridFull Time
5+ YOERequires 5+ years of IT administration and end-user support, Microsoft 365 and Entra ID experience, endpoint management, PowerShell, Windows Server, Active Directory, networking, a California driver's license, and regular regional travel.
Microsoft 365, Exchange Online, Microsoft SharePoint, OneDrive, Microsoft Teams, Entra ID (Azure AD), Entra Connect, Active Directory, Microsoft Intune, PowerShell, NetSuite, Celigo, RingCentral, Point-of-sale systems, Windows Server, RMM, VMWare, MS-102, AZ-104, SC-300, MD-102
3w
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IT Systems Administrator / AWS Infrastructure Specialist
Rancho Santa Margarita, California, United States
$45-$65/hr HybridFull Time
Experience administering AWS, Linux (Ubuntu), Windows, Kubernetes and Docker; familiarity with EC2, ALB, EKS and Alibaba Cloud; participation in SOC2/ISO 27001/FedRAMP compliance; OSCAL/documentation automation; on-call support availability.
AWS, EC2, ALB, EKS, Alibaba Cloud, Kubernetes, Docker, Ubuntu, Linux, Windows, OSCAL (Open Security Controls Assessment Language), hypervisors
4w
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District Network Systems Administrator
Mission Viejo, California, United States
$9k-$13k/mo OnsiteFull Time
4+ YOEAdminister and maintain district LAN/WAN, design network solutions, troubleshoot network issues, prepare technical specifications, and collaborate with campus network administrators.
Windows, Linux, network management software, web server software, anti-virus servers
1mo
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Network Security Administrator
Tustin, California, United States
$150k-$180k/yr OnsiteFull Time
5+ YOE5–8 years in network/systems/cybersecurity; hands-on Palo Alto (NGFW, Prisma Access, Cortex XDR); Microsoft Windows Server, Linux, Microsoft Azure, Microsoft Entra ID; CMMC Level 2/NIST SP 800-171 knowledge; active or obtainable Secret clearance.
Palo Alto Networks, NGFW, Prisma Access, Cortex XDR, Microsoft Windows Server 2016\u00092022, Linux, Microsoft Azure, Microsoft Entra ID, Microsoft Active Directory, PowerShell, Bash
1mo
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IT Business Systems Administrator - HYBRID
Anaheim, California, United States
$80k-$100k/yr HybridFull Time
6+ YOE3+ years IT operations in insurance (6+ years preferred), experience with Assure/Sapiens/Guidewire/Duck Creek/Majesco, knowledge of data privacy regulations (CCPA, GDPR, NYDFS), change management, vendor coordination, Windows and MS Office proficiency.
Assure Policy, Assure Claims, Sapiens, Guidewire Software, PolicyCenter, ClaimCenter, BillingCenter, Duck Creek Technologies, Majesco, DXC, Windows OS, Microsoft Office
3mo
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10351 - Systems Administrator III
Irvine, California, United States
$135k-$150k/yr OnsiteFull Time
8+ YOE8+ years networking experience; cloud/platform experience; strong TCP/IP, BGP, OSPF; AWS/GCP/Azure networking; virtualization and security knowledge.
Terraform, Ansible, Python, Jira, ServiceNow, Confluence, Prometheus, Grafana, Splunk, ELK, SNMP, SSH, WMI, NetFlow, SolarWinds, Orion, Windows, Linux, UNIX, Cisco, Arista, OpenStack, OpenShift
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