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391 systems administrator jobs at 261 companies in Riverside, CA

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
1mo
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Systems Administrator
Norwalk, California, United States
$60k-$70k/yr OnsiteFull Time
Meriplex
Meriplex: Provides managed IT, cybersecurity, and cloud infrastructure services.
Level 2 systems administrator to resolve end-user issues, support Active Directory/Office365, VMware, Azure, firewalls, SAN, backups, VPN, and perform on-site equipment installations; MSP experience encouraged.
Active Directory, Office365, Microsoft 365, VMware, Azure, Microsoft Exchange, RMM, TCP/IP, GPO, VPN, SAN
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3w
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Systems Administrator
Los Angeles, California, United States
$85k-$120k/yr OnsiteFull Time
Antares
Antares: Designing and manufacturing microreactors for defense and space missions.
2+ YOE2+ years IT support/systems administration experience; Microsoft 365/Entra ID/Intune knowledge; endpoint, networking, and cloud (Azure/AWS) familiarity; PowerShell and troubleshooting skills; compliance/audit documentation experience.
Microsoft 365, Microsoft Entra ID, Microsoft Intune, Microsoft Defender, Microsoft Exchange, Microsoft Teams, Microsoft SharePoint, Windows, macOS, Linux, PowerShell, Microsoft Azure, AWS, GCC High, Ubiquiti, UniFi, Zoom, PSA, RMM, VPN, LAN, WAN, WiFi, TCP/IP, DNS, DHCP, VLAN, NAC
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4w
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Systems Administrator
Victorville, California, United States
$79k-$100k/yr RemoteFull Time
Dynamic Solutions Technology
Dynamic Solutions Technology: Provides IT, engineering, and program management services to government agencies.
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
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1mo
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Systems Administrator
Irvine, California, United States
$71k-$80k/yr OnsiteFull Time
Boot Barn
Boot BarnNYSE: BOOT: Specialty retailer of western and work-related apparel and footwear.
3+ YOE3+ years system administration experience; strong Windows Domain, Group Policy, Microsoft Intune, Exchange/Office 365, PowerShell, Active Directory, Windows Server, virtualization, networking, and Azure/AWS experience; bachelor's or equivalent; strong communication and ability to work independently.
Microsoft Intune, Microsoft Exchange Hybrid, Microsoft Exchange Online, O365, Microsoft PowerShell, Exchange Shell, Microsoft Active Directory, Microsoft Windows Server, Linux, Microsoft Azure, AWS, MDM
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3w
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IT Systems Administrator
Orange, California, United States
$80k-$115k/yr OnsiteFull Time
Winchester Interconnect
Winchester Interconnect: Designs and manufactures custom connectors and cable assemblies.
8+ YOE8+ years systems administration experience in multi-site manufacturing; 8+ years SQL/database administration; proficiency with Windows Server, Linux/Unix, virtualization, cloud platforms, networking, backup/DR, and cybersecurity.
Google Enterprise, ADP, Crowdstrike Falcon, Tanium, Microsoft Active Directory, GlobalShop, SQL, Microsoft Windows Server, Linux/Unix, VMware, Microsoft Hyper-V, AWS, Microsoft Azure, Google Cloud
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1mo
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Senior Systems Administrator
Costa Mesa, California, United States
$146k-$194k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
8+ YOE8+ years designing and implementing classified IT systems; experience with air-gapped systems, physical hardware, virtualization (VMware/Podman), Windows and Linux administration, DISA STIG hardening, NIST 800-53/RMF familiarity, automation, DoD 8570/8140 baseline certification, and active U.S. Top Secret clearance.
Lattice OS, Microsoft Windows, Microsoft Windows Server, Linux, VMware, Podman, Ansible, DISA STIGs, NIST 800-53, Risk Management Framework (RMF)
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1w
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Senior Systems Administrator
Long Beach, California, United States
$103k-$155k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
6+ YOE6+ years Linux and Windows systems administration experience; expertise in Linux, Active Directory, DNS, DHCP, enterprise backup solutions; scripting/automation and cloud (Azure/GCP) experience; strong troubleshooting and documentation skills.
Linux, Windows, Azure, GCP, Active Directory, DNS, DHCP, Veeam, Commvault, Rubrik, Ansible, Puppet, Terraform, Bash, Python, PowerShell
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1mo
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IT Systems Administrator
Seal Beach, California, United States
$86k-$150k/yr OnsiteFull Time
AstroForge
AstroForge: Mines and refines valuable minerals from near-Earth asteroids.
3+ YOE3+ years in IT systems administration with cross-platform support (macOS, Windows, Linux); network administration; IAM; cloud and SaaS management; ITAR/CMMC awareness.
macOS, Windows, Linux, routing, switching, VPNs, firewalls, wireless, Active Directory, Azure AD, Okta, AWS, GCP, Azure, Google Workspace, Microsoft 365, Slack, Zoom, GitHub, Bash, PowerShell, Python, Jamf, Intune, NIST CSF, CIS Controls, CompTIA Security+, Network+
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1mo
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Senior Systems Administrator
Commerce, California, United States
$99k-$124k/yr HybridFull Time
AltaMed
AltaMed: Provides comprehensive healthcare services to underserved Southern California communities.
7+ YOE7+ years in Systems Administration; 2+ years designing/implementing IT systems; Bachelor’s in CS/CIS/MIS preferred; Microsoft/VMware/Cisco/CompTIA certifications preferred.
Microsoft, VMware, Cisco, CompTIA
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1w
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Infrastructure Systems Administrator
San Marcos or Escondido or Rancho Bernardo or Fallbrook
$8k-$10k/mo OnsiteFull Time
Palomar College
Palomar College: Public community college providing associate degrees and vocational training.
2+ YOE2 years telecommunications and network systems administration experience; bachelor’s degree (or equivalent) in MIS/IT/CS; ability to configure, implement, test OS/server releases and VoIP systems; valid California driver’s license by appointment.
Cisco, Microsoft Teams, Session Border Controller (SBC), SIP, VoIP, Active Directory
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1mo
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Network & Systems Administrator
Newport Beach, California, United States
$90k-$130k/yr OnsiteFull Time
Best Choice Products
Best Choice Products: E-commerce retailer of home, garden, and family consumer products.
3+ YOEBachelor’s degree in MIS/IS/CS/CE; 3-5 years hands-on network and systems administration; cloud infra experience; strong networking and Microsoft tech skills; IT security and project experience.
Microsoft 365, Azure, Entra ID, Exchange Online, Teams, SharePoint, DNS, NetSuite, Jira, Confluence, Slack, Warehouse Management Systems, Virtualization, IDS/IPS, Antivirus, Email Security
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6d
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Systems Administrator (ERP)
Long Beach, California, United States
$90k-$110k/yr HybridFull Time
SCS Engineers
SCS Engineers: Provides environmental engineering, consulting, and waste management solutions.
8+ YOEBachelor's degree required; 8+ years ERP experience (Deltek Vantagepoint preferred), 4+ years ERP administration, T-SQL and SQL Server experience, SSRS report development, Power BI experience a plus.
Deltek Vantagepoint, T-SQL, SQL Server Management Studio, SQL Server, SSRS, Power BI
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1mo
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Legal Systems Administrator - Talent Systems
Los Angeles or San Francisco
$125k-$130k/yr RemoteFull Time
Munger, Tolles & Olson
Munger, Tolles & Olson: A national law firm providing high-profile legal representation and professional business support services.
Administer and optimize legal recruiting, performance evaluation, and AI systems; strong system design/configuration, integration, troubleshooting, stakeholder collaboration, and documentation skills; law firm experience preferred.
viRecruit, viEval, viWork Allocation, viCLE, Workday, Microsoft Dynamics 36, Microsoft 365 Suite
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3w
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Network Systems Administrator
San Salvador or Los Angeles
OnsiteFull Time
AireSpring
AireSpring: Provides managed connectivity, cloud communications, and network security services.
7+ YOE7–8 years experience designing, configuring, and maintaining Windows and Linux platforms, hypervisors (KVM, ESXi, Hyper-V), network services (SD-WAN, IPsec, SBCs, QoS, TACACS), automation and scripting, HA systems, and system troubleshooting.
Windows, Linux, KVM, ESXi, Hyper-V, Dell, HP, Intel, Super Micro, SSHd, IPsec, SBCs, QoS, AAA, TACACS, syslog, iPerf, firewalld, SQL, ACLs, VRFs, RAID
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3d
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Systems Support Administrator
Irvine, California, United States
$26-$28/hr OnsiteFull Time
FirstService Residential
FirstService ResidentialNASDAQ / TSX: FSV: Manages residential communities and homeowners associations for property owners.
1+ YOEBachelor's degree or equivalent; 1+ year systems support experience preferred; project management experience preferred; proficiency with Microsoft Office, Excel, Teams, and SharePoint.
Microsoft Office, Microsoft Excel, Microsoft Teams, Microsoft SharePoint
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2w
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KAISJP00252208 Systems Administrator
Downey, California, United States
OnsiteFull Time
Kaiser Permanente
Kaiser Permanente: Integrated healthcare and insurance services provider
2+ YOE2+ years IT support experience (or bachelor's degree), experience supporting enterprise applications, troubleshooting in production/warehouse environments, documenting SOPs, strong analytical and communication skills.
Distributed Order Management System (DOMS), OpenShift, Oracle, Linux, Splunk, Java
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3w
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Systems Administrator - Riverside
Riverside or Los Angeles
$70k-$75k/yr OnsiteFull Time
Carvana
CarvanaNew York Stock Exchange: CVNA: Online platform to buy, sell, and trade used cars.
4+ YOEHigh school diploma, valid driver’s license, 4+ years IT experience, advanced Windows Server/Active Directory/DHCP skills, Mac OS X and Meraki experience, G-Suite and Microsoft Office/Office 365 proficiency, ability to lift up to 70 lbs, and willingness to travel and join on-call rotation.
Windows Server, Active Directory, DHCP, Windows 7, Windows 8, Windows 10, Mac OS X, Meraki Security Appliances, G-Suite, Gmail, Google Calendar, Google Drive, Microsoft Office, Microsoft Outlook, Office 365, Jira
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2mo
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Aviation Systems Administrator
Moreno Valley, California, United States
$90k-$125k/yr HybridFull Time
Metrea
Metrea: Provides specialized aerospace and defense services for national security.
3+ YOE3+ years administering AMOS or similar aviation maintenance system; SQL proficiency; enterprise software config; aviation maintenance knowledge (Parts 43/91/121/145); user training; data integrity; Excel proficiency.
AMOS, FL3XX, iQSMS, D365, SQL, Microsoft Excel, Power BI
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2mo
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Principal Control Systems Administrator
Chino, California, United States
$6k-$7k/bi-wk OnsiteFull Time
Inland Empire Utilities Agency
Inland Empire Utilities Agency: Provides regional wastewater treatment and wholesale water distribution services.
2+ MgmtBachelor’s degree or equivalent in computer science, IT, mathematics, or engineering; extensive experience in design, implementation, and administration of process automation and control systems; two years of supervisory responsibilities.
DCS, SCADA, Industrial Networks, Cybersecurity
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2w
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VIP Support / Mobile Devices / Imaging – Systems Administrator
Los Angeles, California, United States
$39-$50/hr OnsiteFull Time
Vision Information Technology Consultants
Vision Information Technology Consultants: Provides specialized IT and cybersecurity services for government agencies.
7+ YOESecret clearance and CompTIA Security+ required; 7+ years IT/systems administration experience; Windows 10/11, MDM, imaging/deployment, mobile device, and VIP executive support experience.
Windows 10, Windows 11, MDM, VPN, iPhone, Android
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