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66 linux administrator jobs at 39 companies in Vista, 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
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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2mo
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Linux Administrator (IT Senior Engineer)
San Diego, California, United States
$46-$69/hr OnsiteFull Time
Qualcomm
QualcommNASDAQ: QCOM: Designs and manufactures semiconductors and wireless telecommunications products.
3+ YOEUnix/Linux administration (Red Hat, Ubuntu, SUSE, Solaris), server hardware deployment, Ansible, Docker/Kubernetes, PXE/kickstart, SAN/RAID, Veritas/Pacemaker, VMware; 3+ years with Bachelor's or 5+ years without; onsite in San Diego; no immigration sponsorship.
Red Hat Enterprise Linux, Ubuntu, SUSE, Solaris, HP DL/BL Series Servers, Sun, Super Micro, Dell, Docker, Kubernetes, Ansible, PXE, Kickstart, VMware, Veritas, Pacemaker, SAN, RAID
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4d
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Linux Administrator (Classified Systems) – Active Secret Clearance Required
Carlsbad, California, United States
$121k-$191k/yr OnsiteFull Time
Viasat
ViasatNASDAQ: VSAT: Provider of global satellite-based connectivity and secure communication solutions.
6+ YOEActive Secret clearance, 6+ years Linux administration (RHEL/Ubuntu), 4+ years DoD/industrial security with RMF, 2+ years virtualized infrastructure (VMware/Hyper-V/OpenShift), Trellix, AD/IdAM, NetApp/Veeam experience, ability to lift 40lbs, DoD 8140.01 certs.
RHEL, Ubuntu, VMware, Hyper-V, OpenShift, Trellix, ePO, Active Directory, IdAM, GPOs, DNS, DHCP, NetApp, Veeam, Docker, LXD, Ansible, Puppet, Splunk
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1mo
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Senior Systems Engineer - Linux - 26-016
San Diego, California, United States
$150k-$165k/yr OnsiteFull Time
AUSGAR Technologies
AUSGAR Technologies: Specialized cybersecurity and systems engineering for defense organizations.
5+ YOESecret clearance required or ability to obtain; 5+ years Linux systems administration; experience with Linux hardening, PKI, encryption, STIGs and RMF; strong networking, scripting and documentation skills.
GitLab, OpenProject, Git, Subversion, Samba, Python, SSH, rsync, AWK, grep, vi/vim, systemd, LUKS, OCSP, CRL, TLS/SSL, X.509, PKI, LDAP, Active Directory, Kerberos, SSSD, PAM, RAID, Security Technical Implementation Guides (STIGs), Risk Management Framework (RMF)
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2mo
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Atlassian Administrator
San Diego or Colorado or Huntsville or Tupelo
$72k-$110k/yr HybridFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
4+ YOE4+ years Atlassian administration experience, 3+ years systems administration; strong Linux/Windows/Unix and enterprise Atlassian (JIRA, Confluence, Bitbucket, Bamboo, Fisheye/Crucible) skills; Agile/Scrum experience; HA/DR and automation experience; US citizenship required.
Atlassian, JIRA, Confluence, Bitbucket, Bamboo, Fisheye, Crucible, Microsoft 365, Microsoft Teams, Microsoft OneDrive, Microsoft Forms, Microsoft Planner, Microsoft SharePoint, Linux, Windows, Unix, TCP/IP, VMs, Agile, Scrum
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1w
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SCIF System Administrator
San Diego, California, United States
$80k-$120k/yr OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
4+ YOEActive US citizenship with TS/SCI, 4+ years classified network systems administration, JWICS/VTC/COMSEC experience, RMF/NIST compliance, Windows 10/11 and Linux knowledge, ability to brief senior personnel.
Joint Worldwide Intelligence Communications System (JWICS), Video Teleconference Communications (VTC), DITPR-DON, DADMS, Enterprise Mission Assurance Support Service (eMASS), Vulnerability Remediation Asset Manager (VRAM), Exacta, Windows 10, Windows 11, Linux, RMF, NIST, CAC, COMSEC
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1mo
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Classified Systems Administrator
Woburn or Boston or Arlington or Dayton or Melbourne or Carlsbad
$115k-$160k/yr OnsiteFull Time
Systems & Technology Research
Systems & Technology Research: Develops advanced technology for national security and defense applications.
3+ YOETS/SCI with CI Polygraph required; U.S. citizenship. 3+ years technical experience or equivalent. Linux (Red Hat/CentOS/Ubuntu) and Windows administration, Active Directory, networking, NAS, firewall, PowerShell automation, DoD security guidance knowledge, and after-hours support.
Red Hat, CentOS, Ubuntu, Windows, NAS Storage, Firewall, Microsoft Active Directory, Group Policy, PowerShell, Enterprise Virtualization Tools, Multi-Factor Authentication, Public Key Infrastructure, Web Server, LDAP, Security Technical Implementation Guidelines (STIGS), Security Content Automation Protocol (SCAP), Host Based Security System (HBSS), Assured Compliance Assessment Solution (ACAS), DoD Ports, Protocols, and Services (PPS)
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2d
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Systems Administrator II - La Jolla, CA
La Jolla, California, United States
$91k-$146k/yr OnsiteFull Time
Institute for Defense Analyses
Institute for Defense Analyses: Operates federally funded research centers for national security analysis.
4+ YOE4+ years systems administration (3+ with Linux) or HS+6 years, experience with Linux, VMware, Apache, MySQL, scripting (Perl, PHP, shell), CompTIA Security+ or equivalent, ability to obtain security clearance.
Linux, VMware, Apache, MySQL, Perl, PHP, GNU utilities
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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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1mo
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Sr Systems Administrator
San Diego or California
RemoteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
5+ YOEUS citizen required; bachelor’s +5 years (or +4 years experience in lieu). Azure, IaaS/PaaS, container (Docker/Kubernetes/AKS), IaC (PowerShell, Python, Azure CLI, Bicep, JSON), Windows/Linux administration, VMware, Exchange/Exchange Online, Active Directory/Entra, DNS/DHCP, VPN, ServiceNow experience.
Azure, IaaS, PaaS, Docker, Kubernetes, AKS, PowerShell, Python, Azure CLI, JSON, Bicep, Windows Server, Linux, VMware, Active Directory, Entra (Azure AD), DNS, DHCP, Kerberos, VPN, Microsoft Exchange Online, Microsoft Teams, Microsoft Office 365, M365, ServiceNow, Veritas NetBackup, NetApp
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3mo
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IT Systems Administrator III
San Diego, California, United States
$98k-$147k/yr OnsiteFull Time
Innoflight
Innoflight: Designs and manufactures compact cyber-secure avionics for space missions.
5+ YOE5+ years in system administration, networking, and security; Windows/Linux servers; AD; virtualization; cloud (Azure/AWS); security frameworks (NIST/CMMC); scripting (PowerShell/Python).
PowerShell, Python, VMware, Hyper-V, Windows Server, Linux, Azure, AWS, Active Directory, VPN, Firewall, IDS/IPS, DNS, DHCP, Scripting and automation
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1w
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Systems Administrator (GEODSS) - Diego Garcia 1
Diego Garcia or San Diego or Chicago or Fairbanks or Vandenberg AFB or Nellis AFB
OnsiteFull Time
Serco
SercoLondon Stock Exchange: SRP: Provides professional outsourcing services to governments worldwide.
4+ YOEActive security clearance and U.S. citizenship; minimum 4 years systems administration experience; Linux and Windows experience; DISA STIG compliance, backups, auditing, incident response; CompTIA Security+/CCNA/RedHat desired.
GEODSS, Linux, Windows, RedHat, DISA Security Technical and Implementation Guide (STIG), CompTIA Security +, CCNA
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3w
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Senior IT Systems Administrator
San Diego, California, United States
$115k-$155k/yr OnsiteFull Time
Seasats
Seasats: Builds autonomous surface vessels for persistent maritime intelligence.
6+ YOE6+ years IT systems administration experience; Google Workspace or Microsoft 365 admin; MDM for Windows and macOS; Linux knowledge; strong networking (DNS, DHCP, VLANs, VPNs, Wi‑Fi), identity/SSO/MFA, endpoint security, and support/process experience.
Google Workspace, Microsoft 365, Windows, macOS, Linux, MDM, Okta, JumpCloud, Kandji, Jamf, Microsoft Intune, Python, PowerShell, Bash, DNS, DHCP, VLANs, VPNs, Wi‑Fi, firewalls, SSO, MFA
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1mo
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Senior SAP Basis Administrator
Irvine, California, United States
$115k-$172k/yr OnsiteFull Time
ITT
ITTNYSE: ITT: Manufactures engineered components for transportation, energy, and industrial markets
3+ YOE3+ years SAP Basis experience (3-5 preferred), 1 year SAP Security, bachelor’s degree preferred, US citizenship required, hands-on S/4HANA and HANA administration, cloud (AWS/Azure) and Linux/Windows experience, strong incident & DR skills.
SAP Basis, S/4HANA, RISE with SAP, SAP HANA 2.0, HANA System Replication (HSR), SAP GUI, TMS, SAP BTP, Cloud Connector, SuccessFactors, Ariba, SAP ECC 6.0, SAP 4.0B/AS 400, BW on HANA, PI/PO, Fiori, CRM, EWM, LVM, Solution Manager, BOBJ BI, BODS, GRC, Content Server, Java, Oracle, MS SQL, SQL, SUSE, RHEL, Linux, Windows Server Cluster, Hyper-Visor, AWS, Azure, VPN, VPC, VNET
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1mo
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Sr. Systems Engineer - Linux
San Diego, California, United States
$120k-$145k/yr OnsiteFull Time
Axos Financial
Axos FinancialNYSE: AX: Provides digital-first banking and diverse financial services to customers.
5+ YOE5+ years Linux administration, strong Puppet and VMware experience, production support/incident management, Bash/Python scripting, networking and storage knowledge, ITSM experience (ServiceNow) in a regulated banking environment.
Linux, Unix, Puppet, VMware, vSphere, ESXi, vCenter, Zerto, ServiceNow, Bash, Python
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1w
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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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1w
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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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4w
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Senior Principal System Administrator
San Diego, California, United States
$133k-$226k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
8+ YOETop Secret clearance required, typically Bachelor's + 8 years or equivalent. Strong Linux (RHEL), Windows Server, VMware, networking, cybersecurity (DISA STIGs, Nessus) skills; CompTIA Security+; McAfee ePO admin certification within 6 months; experience with classified networks.
VMware, Red Hat Enterprise Linux, YUM, DNF, Windows Server, Microsoft SQL Server, TMPC, McAfee ePO, DNS, LDAP, SSH, SCP, Nessus, PKI, Red Hat KVM, Bash, PowerShell, Shared Storage, Microsoft Word, Microsoft PowerPoint, Microsoft Excel, DISA STIGs
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3mo
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Data Center Administrator
Rancho Santa Margarita, California, United States
$65k-$100k/yr OnsiteFull Time
Applied Medical
Applied Medical: Manufacturer of advanced medical devices and surgical products.
2+ YOE2+ years IT/infrastructure experience; strong knowledge of on-prem and cloud infrastructure, OS, networking, security; able to manage multiple projects in 24x7 environment.
Windows, Linux/UNIX, Active Directory, Azure Active Directory, DHCP, DNS, Microsoft Exchange, SharePoint, Teams, SQL, Oracle, PostgreSQL, Networking (Routers/Switches/Firewalls), SAN/NAS, VMware, Cloud infrastructure, Security (SSL, ACLs)
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1mo
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IT Systems Administrator, Mid
San Diego, California, United States
$62k-$141k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
3+ YOE3+ years managing Microsoft Windows Server and Active Directory in enterprise environments; Top Secret clearance required; ability to obtain DoD 8570 IAT2 within 30 days; Bachelor’s in IT/Computer Science; experience with VMware, storage, and networking.
VMware, VMware vSphere, VMware Horizon, Microsoft Windows Server, Microsoft Windows 10, Microsoft Exchange, Microsoft Active Directory, Network Attached Storage, SAN, NAS, iSCSI, Amazon Web Services, Cisco, TACLANE, F5, Linux, Apache, HTML, Tenable Nessus, ACAS
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