Top Systems Administrator Jobs in Los Angeles, CA

Own and operate Relativity's Linux and Windows infrastructure supporting manufacturing and engineering. Deploy, configure, automate, and maintain production systems on-prem and in cloud (Azure/GCP). Support AD, DNS, DHCP, enterprise backups (Veeam/Commvault/Rubrik), ensure uptime and AS9100 compliance, troubleshoot network/system boundaries, mentor junior admins, and collaborate with senior engineers to operationalize designs and automate administration.

Designs, deploys, and maintains Linux workstations and servers. Develops Puppet configuration management, creates Ubuntu imaging processes, resolves Tier 2 and Tier 3 technical issues, supports hardware and software developers, and assists with infrastructure automation using Terraform. The role also contributes to identity and access management, patching, system security, documentation, and scalable workstation and infrastructure operations.

Administers, maintains, monitors, and secures enterprise network infrastructure across multiple platforms. Configures Cisco networking technologies, firewalls, VPNs, wireless systems, and monitoring tools; troubleshoots complex network issues; implements security controls; and supports availability, performance, and compliance. Collaborates with network engineering, IT operations, and security teams while documenting environments, developing procedures, and potentially training junior staff and end users.

Own and administer secure infrastructure supporting aerospace and defense manufacturing, including license servers, GCC High, Windows/Linux servers, identity, endpoints, backups, patching, disaster recovery, and engineering CAD/PLM systems. Partner with cloud and network engineering teams on hybrid identity, AWS GovCloud integration, endpoint compliance, and secure data flows. Maintain CMMC Level 2 and ITAR audit readiness, infrastructure availability, vulnerability remediation, and standardized systems administration processes.

Manage and support VMware virtualization environments, including VM lifecycle operations, architecture changes, networking, storage, patching, upgrades, and troubleshooting. Administer NAS/SAN storage, Veeam backups, disaster recovery processes, Windows and Linux systems, and hardware components. Perform root-cause analysis, maintain documentation, manage ServiceNow tickets, develop VM templates, and support automation. Provide occasional after-hours or on-call support.

Administer and optimize Tekion and other dealership systems, including user security, permissions, configurations, reporting, hardware, automation, privacy compliance, and data integrity. Troubleshoot application issues, manage vendor support cases, develop Excel-based reporting solutions, train users, support implementations and upgrades, and recommend technology improvements across dealership departments. The role requires 3–5 years of systems administration experience, advanced Excel skills, and travel of up to 25%.

Provides IT systems administration, audiovisual production, and escalated service desk support at an on-site headquarters. Responsibilities include managing Microsoft Teams GCC High, running live events, troubleshooting conference room equipment, building scripting and chatbot automations, improving ITSM workflows, integrating systems through APIs, resolving complex tickets, and documenting solutions. Requires strong AV, systems administration, scripting, ITSM, communication, and hardware-handling skills, with some travel and ITAR eligibility.

Administers venue and hospitality applications, including user access, permissions, configurations, troubleshooting, vendor coordination, upgrades, testing, documentation, and system implementations. Supports POS, ticketing, event, retail, and operational platforms; monitors releases and system availability; assists with pre-event checks, go-live activities, training, and issue resolution. Provides evening, weekend, holiday, event-day, and after-hours support as needed.

Owns IT systems administration and security operations for a fully remote workforce. Responsibilities include managing Microsoft 365 and Google Workspace, endpoint and identity platforms, security tools, access controls, threat monitoring, incident response, vulnerability management, compliance evidence, disaster recovery, vendor relationships, reporting, and operational roadmaps.

Administer AWS and GCP cloud infrastructure, identity and directory services, Microsoft 365, Google Workspace, endpoint management, and security platforms. Handle escalated incidents, participate in on-call rotation, support SOC 2 compliance and vulnerability remediation, and automate operational processes. Collaborate with security and support teams to maintain reliable, secure production environments.

Owns the architecture, administration, integration, governance, and optimization of Salesforce and Customer Success platforms. Designs scalable workflows, data integrations, AI-enabled automation, deployment pipelines, QA processes, and technical documentation. Partners with executives, Customer Success, IT, and Engineering teams to translate business needs into enterprise solutions, leads Agile delivery, oversees production support and Tier-3 escalations, and mentors junior technical staff.

Administer Salesforce, Nue CPQ, enrichment tools, and GTM integrations supporting quote-to-cash operations. Maintain product catalogs, pricing, approval workflows, data quality, integrations, user access, and request intake. Troubleshoot sync failures, configure declarative Salesforce functionality, and deploy AI-assisted workflows and automations. Partner with Finance, Deal Desk, Sales, and Customer Success while following disciplined testing, deployment, and rollback processes.

Administer, maintain, secure, and optimize Workday and related HR systems. Configure and implement modules, integrations, reports, and system updates; troubleshoot issues; manage data integrity and vendor relationships; provide user support and training; document processes; and support HR events such as performance reviews and open enrollment. Collaborate with HR, payroll, recruiting, and other internal teams while leading system projects and process improvements.

Manages enterprise systems, networks, servers, applications, and communication links across multiple locations. Responsibilities include installation, configuration, maintenance, upgrades, troubleshooting, performance and capacity analysis, vulnerability management, automation, user training, and technical recommendations. Directs other system administrators and supports Oracle Fusion Middleware and related enterprise applications. The role requires extensive systems administration experience and an IT-I Critical Sensitive or Tier 5 security clearance.

Serves as a technical subject matter expert for enterprise Windows Server, Active Directory, and IIS environments. Administers, patches, monitors, secures, and troubleshoots mission-critical systems; manages Group Policy, DNS, authentication, permissions, networking, and virtualized environments. Applies DISA STIGs and DoD RMF security requirements, performs vulnerability remediation and root-cause analysis, maintains documentation, and supports production systems through on-call rotations.

Manage and maintain Windows systems, networks, hardware, software, user accounts, and electronic security systems supporting DLA IESS and EKC. Responsibilities include system monitoring, installation, configuration, troubleshooting, connectivity resolution, inventory and downtime documentation, staff training, and system optimization. The role requires seven years of systems administration experience, extensive Windows and electronic security systems experience, multiple certifications, a bachelor's degree, U.S. citizenship, and an active Secret clearance.

Administer and support enterprise Linux, Windows, VMware, and OpenShift Virtualization environments. Perform monitoring, patching, security hardening, access administration, troubleshooting, automation, documentation, and virtual machine migrations. Use Ansible and scripting languages to streamline system administration while supporting compliance requirements such as STIGs, CIS benchmarks, SCAP, and DISA standards. Collaborate with engineering teams and support scheduled evening or weekend migration cutovers.

Manage and optimize infrastructure supporting AI and machine learning systems, including GPU/CPU clusters, cloud environments, LLMs, data pipelines, and model deployments. Responsibilities include system monitoring, security, access management, automation, scripting, CI/CD support, troubleshooting, documentation, and performance optimization. The role collaborates with developers, data scientists, and prompt engineers to maintain reliable, scalable AI platforms.

Oversee and optimize infrastructure supporting AI and machine learning platforms, including servers, cloud environments, compute resources, GPU and CPU allocation, security controls, monitoring, incident response, automation, and scalability. Collaborate with AI engineers, data scientists, and infrastructure teams; troubleshoot issues, perform root cause analysis, maintain documentation, evaluate emerging technologies, and mentor junior administrators.

Supports and improves internal IT systems, resolves escalated support tickets, administers SaaS and endpoint-management tools, manages user access, and strengthens security practices. The role also maintains documentation, supports compliance audits, trains help desk staff, and identifies opportunities to automate provisioning, deprovisioning, and other repetitive workflows. This remote role requires ownership of systems projects and up to 15 travel days annually.

Owns administration, governance, optimization, integrations, security, and support for NetSuite and related finance systems. Translates accounting and finance requirements into scalable solutions, improves close and reporting processes, manages consultants and vendors, supports acquisitions and integrations, and ensures SOX compliance, audit readiness, access controls, testing, documentation, and user adoption.

Administer and govern PDM/PLM systems (Autodesk Vault, SolidWorks PDM, PTC Windchill). Ensure engineering data integrity, BOM and item/master alignment, troubleshoot multi-CAD issues, support upgrades, migrations, and governance activities, and collaborate with engineering, IT, manufacturing, and business stakeholders.

Administer and secure enterprise networks, servers, cloud infrastructure, identity systems, endpoints, storage, virtualization, backups, and disaster recovery. Monitor performance and security events, investigate incidents, manage vulnerabilities, support compliance with NIST, CMMC, and ITAR, and provide Tier II/III support. The role also supports engineering software, vendor coordination, infrastructure modernization, documentation, and business continuity for aerospace operations.

Administer company IT systems, software, infrastructure, networks, hardware, cloud environments, and cybersecurity systems. Manage technology assets from procurement through deprovisioning, troubleshoot operating systems and networks, implement automation and infrastructure as code, support identity integrations and CI/CD services, and coordinate technical initiatives with engineering programs and vendors. Create playbooks, runbooks, and procedures while maintaining required security certifications and clearance eligibility.

Provide IT support for software, hardware, networking, user accounts, Windows systems, Active Directory, file servers, and network resources. Build, configure, troubleshoot, and manage workstations, servers, and network devices; maintain hardware and software inventory; and manage CMMS updates and reporting. Requires strong troubleshooting, communication, organization, customer service, and Windows networking skills, with occasional extended or weekend hours.