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45 linux system administrator jobs at 34 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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Linux System Administrator (Associate)
Seal Beach, California, United States
$79k-$133k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
Active Top Secret/SCI or recent Tier 5 (T5); experience with Linux (RHEL), AWS, system provisioning/patching, user administration; ability to obtain Security+ / IAT Level 2; U.S. person required; willingness to relocate if needed.
Red Hat, RHEL, AWS, Linux, Agile, Joint Special Access Program Implementation Guide (JSIG), Risk Management Framework (RMF)
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1mo
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Linux System Administrator (Associate)
Seal Beach, California, United States
$79k-$133k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
Active U.S. Top Secret/TS-SCI clearance, U.S. citizenship, experience with Linux (RHEL) and AWS, knowledge of JSIG and RMF, ability to obtain Security+/IAT Level 2, willingness to relocate if needed.
Red Hat Enterprise Linux (RHEL), Linux, AWS, JSIG, RMF, Agile
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Sr Linux 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 administration, Active Directory/DNS/DHCP, enterprise backups; networking troubleshooting; automation and documentation skills.
Azure, GCP, Active Directory, DNS, DHCP, Veeam, Commvault, Rubrik, Ansible, Puppet, Terraform, Bash, Python, PowerShell
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2mo
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Linux Administrator
Irvine, California, United States
$100k-$115k/yr OnsiteFull Time
Boot Barn
Boot BarnNYSE: BOOT: Specialty retailer of western and work-related apparel and footwear.
3+ YOEBachelors or equivalent experience, 3+ years system administration, Windows Domain Group Policy, Microsoft Exchange/Office 365, PowerShell, Microsoft Windows Server, virtualization, networking, Azure, Kubernetes, Ansible, scripting, backup and restore, and willingness to work extended hours.
Microsoft Windows Server, Microsoft Active Directory, DNS, DHCP, SMB, NFS, Kubernetes, Ansible, PowerShell, Microsoft Exchange, Microsoft Office 365, Azure, PAM, MDM
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2w
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System Administrator
Arcadia, California, United States
$39-$42/hr OnsiteFull Time
Foothill Credit Union
Foothill Credit Union: A member-owned financial institution providing banking and lending services.
5+ YOE5+ years system administration in hybrid environments, 3 years IT security, bachelor\u0002s in IT/CS (or equivalent), expertise in Windows Server/AD, Linux, VMware, Intune, backup solutions, and regulatory compliance (NCUA/FFIEC).
VMware vSphere, ESXi, vCenter, Microsoft Intune, Entra, Office 365, Azure, Azure AD, Active Directory, Group Policy, DNS, DHCP, Veeam, Hyper-V, Nutanix
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3w
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System Administrator - Level 4
Pasadena, California, United States
$107k-$160k/yr OnsiteFull Time
Sophia Space
Sophia Space: Modular data center hardware for in-orbit computing and AI.
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
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1mo
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Senior IT System Administrator
Long Beach, California, United States
$107k-$152k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
4+ YOE4+ years enterprise IT systems administration; expertise with Windows Server, Active Directory, Group Policy, endpoint management (JAMF/Intune/SCCM), patch management, scripting (PowerShell/Python/Bash), virtualization, and networking fundamentals.
Windows Server, Active Directory Domain Services, Group Policy, Configuration Manager (SCCM), JAMF, Linux, VMware, Hyper-V, PowerShell, Python, Bash, WSUS, Ivanti, Automox, NIST 800-53, CIS benchmarks, CMMC
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2w
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Information Technology System Administrator III (SQLServer/Web Administrator)
Los Angeles, California, United States
$56-$73/hr HybridFull Time
Metropolitan Water District of Southern California
Metropolitan Water District of Southern California: A state-established cooperative that provides imported and managed water resources and related services to member agencies in Southern California.
2+ YOEBachelor's +4 yrs or Master's +2 yrs in related field; experience deploying/configuring/administering Windows and Linux servers, web servers (IIS, Apache, WebLogic, JBoss), Microsoft SQL Server and SharePoint; cloud experience (Azure, Oracle Cloud).
Azure, Oracle Cloud, Microsoft SQL Server, SharePoint, Windows, Linux, IIS, Apache, WebLogic, JBoss
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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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System Engineer- ArcGIS
Redlands or St. Louis or Vienna
$121k-$198k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
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
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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
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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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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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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3w
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Network Security Administrator
Tustin, California, United States
$150k-$180k/yr OnsiteFull Time
Design West Technologies
Design West Technologies: Designs and manufactures aerospace and defense electro-mechanical systems.
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
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2d
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IT Systems Administrator / AWS Infrastructure Specialist
Rancho Santa Margarita, California, United States
$45-$65/hr HybridFull Time
Melissa
Melissa: Provides global address, identity, and contact data quality solutions.
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
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5d
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District Network Systems Administrator
Mission Viejo, California, United States
$9k-$13k/mo OnsiteFull Time
South Orange County Community College District
South Orange County Community College District: Provides higher education and vocational training in Southern California.
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
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1mo
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Junior IT Systems Administrator (part-time)
Pasadena or United States
$35-$45/hr HybridPart Time
Carbon Mapper
Carbon Mapper: Detects and quantifies greenhouse gas emissions using satellite technology.
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)
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3w
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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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2w
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Systems and Information Administrator
Irvine, California, United States
$75k/yr OnsiteFull Time
Cityside Fiber
Cityside Fiber: Provides high-speed fiber-optic internet to Southern California communities.
2+ YOEBachelor's or equivalent experience,2+ years server administration and data governance,proficiency with APIs/JSON/Postman,SQL,virtualization (VMware/Hyper-V),and strong troubleshooting and communication skills.
JSON, GeoJSON, Postman, SQL, VMware, Hyper-V, Microsoft Windows Server, Linux, Microsoft Active Directory, ERP, CRM, HRIS
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