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68 linux administrator jobs at 45 companies in Simi Valley, CA

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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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Principal Linux Administrator
El Segundo, California, United States
$96k-$182k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
5+ YOEActive, transferable U.S. Top Secret clearance and U.S. citizenship required; typically 5+ years relevant experience (or advanced degree with 3+ years); experience with Microsoft Windows, Red Hat Enterprise Linux, ESXi/vCenter, AD, DNS, DHCP, backups, RAID, and security; obtain CompTIA Security+ CE within 6 months.
Red Hat Enterprise Linux, ESXi, VMware vCenter, Microsoft Windows, Windows Server, Active Directory, DNS, DHCP, Ansible
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Principal Linux Systems Administrator / Sr. Principal Linux Systems Administrator (AHT)
Redondo Beach, California, United States
$104k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
5+ YOEStrong Linux (Red Hat) system administration experience, OS/package management (RPM), shell scripting, hardware troubleshooting, ability to obtain DoD Secret clearance, bachelor's degree in CS or related (or equivalent experience).
Linux, Red Hat, VMware, RPM, Shell scripting
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RHEL 8 Linux Systems Administrator
El Segundo, California, United States
$120k-$160k/yr OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
5+ YOEActive Top Secret clearance with SCI/SAP eligibility, DoD 8140 certification (Security+/CISSP), 3+ years Linux administration (RHEL 8+), experience with air-gapped/high-security systems, Bash/Python scripting, and strong documentation skills.
RHEL 8, Bash, Python, Ansible, KVM, VMware, Podman, Docker, Kubernetes, SELinux, systemd, LVM, STIGs, CIS benchmarks
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RHEL 8 Linux Systems Administrator
El Segundo, California, United States
OnsiteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
5+ YOEActive Top Secret/TS-SCI clearance, DoD 8140 certification (e.g., Security+, CISSP), 3+ years enterprise Linux (RHEL 8+) administration, Bash/Python scripting, SELinux/systemd/LVM knowledge, STIGs/CIS compliance, strong documentation skills.
RHEL 8, Bash, Python, SELinux, systemd, LVM, STIGs, CIS benchmarks, Ansible, KVM, VMware, Podman, Docker, Kubernetes
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System Administrator
Los Angeles, California, United States
$60-$70/hr HybridContract
Cosm
Cosm: Operates immersive entertainment venues and develops shared reality technology.
5+ YOE5+ years infrastructure/system administration experience (media/VFX preferred). Expert Windows/Mac/Linux administration, system imaging, scripting (PowerShell/Bash/Python), render farm and storage management, AWS and monitoring tools.
Windows, Mac, Linux, WDS, WSUS, SCCM, ECM, PDQ Deploy, PowerShell, Bash, Python, HP Anyware, Parsec, Splashtop, Jump Desktop, Nuke, Resolve, Cinema 4D, Houdini, Thinkbox Deadline, AWS Deadline Cloud, RenderMan, LogicMonitor, Grafana, S3, EC2, VPC, Intune, Apple Business, JAMF Pro, Cisco Prime, Arista CloudVision, Aruba Central, Ruckus SmartZone
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Systems Administrator
Port Hueneme, California, United States
$108k-$145k/yr OnsiteFull Time
Resource Management Concepts
Resource Management Concepts: Provides IT, cybersecurity, and engineering solutions to government agencies.
3+ YOEBachelor's in CS/IS/Engineering, 3+ years systems administration experience, active Top Secret (T5) clearance, IAT Level II (DoD 8570/8140) certification required; experience with Windows/Linux, virtualization, and cybersecurity.
Windows, Linux, firewalls, antivirus solutions, intrusion detection systems, virtualization
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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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Senior Systems Administrator
Torrance, California, United States
$110k-$137k/yr OnsiteFull Time
Red Cat Holdings
Red Cat HoldingsNASDAQ: RCAT: Providing all-domain drone and robotic solutions for defense.
7+ YOE7+ years systems administration experience, 3+ years in senior/lead capacity. Strong Windows, Linux, Microsoft 365, Azure/AWS, identity, endpoint, backup, monitoring, Jira/Confluence, scripting (PowerShell/Python/Bash), security and incident response. US work authorization required for ITAR/EAR roles.
Microsoft 365, Microsoft GCC High, Windows, Linux, macOS, Entra ID, Active Directory, DNS, DHCP, Group Policy, Azure, AWS, PowerShell, Jira, Jira Service Management, Confluence, Smartsheet, Adobe Acrobat, SolidWorks PDM, GitLab, GitHub, Jenkins Build Server, Microsoft Intune, Microsoft Autopilot, Microsoft Defender, Microsoft Purview, Exchange Online Protection, VMware, Python, Bash
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Senior Systems Administrator
Torrance, California, United States
$110k-$137k/yr OnsiteFull Time
Red Cat Holdings
Red Cat HoldingsNASDAQ: RCAT: Manufacturing tactical drone systems for defense and security.
7+ YOE7+ years systems administration experience (3+ in senior/lead capacity). Strong Windows/Linux/macOS, Active Directory/Entra ID, Azure/AWS, endpoint, backup, monitoring, and incident response skills; Jira/Confluence experience; strong communication and troubleshooting; background check and U.S. work authorization required for export‑restricted roles...
Microsoft 365, Microsoft GCC High, Windows Server, Windows, Linux, macOS, Microsoft Entra ID, Microsoft Azure AD, Active Directory, DNS, DHCP, Group Policy, Microsoft Exchange Online, Microsoft SharePoint, Microsoft Teams, Microsoft OneDrive, Microsoft Exchange Online Protection, Azure, AWS, Jira, Jira Service Management, Confluence, Smartsheet, Adobe Acrobat, SolidWorks PDM, GitLab, GitHub, Jenkins Build Server, PowerShell, Python, Bash, Microsoft Intune, Microsoft Autopilot, Microsoft Defender, Microsoft Purview, VMware
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Database Administrator
Irving or San Francisco or Los Angeles
$64k-$118k/yr OnsiteFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global advertising and digital transformation agency holding.
5+ YOEBachelor's in CS/IT, 5+ years DBA experience, strong PostgreSQL and Oracle (RAC, Data Guard, RMAN) skills, cloud experience (AWS/Azure/GCP), SQL, Linux/Unix, scripting (Shell/Python), performance tuning, backup/recovery and HA, on-call participation.
PostgreSQL, Oracle, RAC, ASM, Active Data Guard, RMAN, datapump, pg_dump, WAL, PITR, SQL, Linux, Unix, Shell, Python, AWS, Azure, GCP, RDS, Docker, Kubernetes, CI/CD
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Information Systems Administrator
Hawthorne, California, United States
OnsiteFull Time
Quantum Space
Quantum Space: Developing maneuverable spacecraft platforms for defense and commercial missions.
4+ YOE4+ years in system administration/DevOps/cloud/network support; experience with Linux/macOS/Windows, scripting (BASH/Shell/YAML), IaC (Terraform/Ansible/Puppet), Azure/AWS, IdP/SAML, cybersecurity (CompTIA Security+), and ability to obtain/maintain security clearance.
Linux, macOS, Windows, BASH, Shell, YAML, Terraform, Ansible, Puppet, Microsoft Azure, Amazon Web Services, IdP, SAML
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1w
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IT System Administrator
Los Angeles or El Segundo or Hawthorne
$80k-$100k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
1+ YOE1+ years system administration experience with on-prem infrastructure, Windows/Linux administration, Active Directory/Azure AD, endpoint management (Intune,GPO), networking, AV support, lifting ability, and security-first mindset.
Kubernetes (k8s), Ansible, PowerShell DSC, AWS, Azure, GCP, Grafana, Prometheus, Python, Bash, PowerShell, Siemens Teamcenter, MATLAB, Visual Studio, Active Directory, Azure AD / Entra ID, Microsoft Intune, Group Policy (GPOs), SAN
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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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IT Systems Administrator, IT Applications
Redmond or Hawthorne or Bastrop
$95k-$150k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
3+ YOEBachelor's or equivalent experience,3+ years managing enterprise applications,experience with Atlassian administration,API integrations (REST,GraphQL,webhooks),scripting (Groovy,Python,Java),and SQL in Linux environments.
Jira Software, Jira Service Management, Confluence, REST, GraphQL, webhooks, Groovy, Python, Java, SQL, Linux, ScriptRunner
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Server Administrator (on-site) (no relo)
Alhambra, California, United States
$44-$51/hr OnsiteFull Time
AHMC Healthcare
AHMC Healthcare: Operates a network of acute care hospitals and medical centers.
4+ YOE4+ years server administration experience; expertise with Windows/Linux, Active Directory, GPO, DNS, DHCP; VMware vSphere/ESXi and Hyper-V virtualization; DR/BC planning; Tier 3 Exchange support; HIPAA compliance; mandatory on-site attendance.
Dell PowerEdge, HP ProLiant, Windows Server 2016, Windows Server 2019, Windows Server 2022, Linux, VMware vSphere/ESXi, Microsoft Hyper-V, Microsoft Active Directory, Group Policy Objects (GPO), DNS, DHCP, Microsoft Exchange Server, SAN, NAS
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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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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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DreamWorks Technology - Systems Administrator, Operations
Glendale, California, United States
$70k-$85k/yr OnsiteFull Time
NBCUniversal
NBCUniversalNASDAQ: CMCSA: Produces and distributes entertainment content and theme park experiences.
3+ YOE3+ years supporting UNIX/Linux and/or Windows in enterprise environments; undergraduate degree or equivalent; experience with AD, networking, scripting (Bash, Python, PowerShell, Perl); strong troubleshooting and customer service skills.
SSH, rsync, Active Directory, Group Policies, File Sharing, Print Services, Bash, Python, Microsoft PowerShell, Perl, Gmail, Google Suite, Jira, Linux, OSX, Windows
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System Administrator, IT Services
Calabasas, California, United States
$90k-$100k/yr OnsiteFull Time
AmaWaterways
AmaWaterways: Provides luxury river cruise vacations on international waterways.
3+ YOE3–5 years system administration experience; Associate's or Bachelor's in IT/CS/IS or equivalent; hands-on with VMware, Citrix, Microsoft 365/Entra, Azure/AWS, 8x8, Cisco, Intune, PowerShell, ITSM and backup/patch management; participates in on-call rotation.
VMware vSphere, ESXi, vCenter, Citrix Cloud, Citrix DaaS, Citrix Virtual Apps and Desktops, Microsoft 365, Microsoft Exchange Online, Microsoft Teams, Microsoft SharePoint Online, OneDrive, Active Directory, Microsoft Entra ID, Microsoft Azure, AWS, 8x8, Cisco, Windows Server, Linux, Microsoft Intune, Windows 10, Windows 11, macOS, ServiceNow, Jira Service Management, Freshservice, PowerShell, Microsoft Office, Veeam, Microsoft Teams Rooms
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