Top Systems Administrator Jobs in Los Angeles, CA

Administer and engineer physical and virtual infrastructure for NAVAIR, including servers, workstations, virtual machines, containers, networking, backups, software, and user access. Troubleshoot hardware and software, maintain documentation and disaster recovery plans, provide technical support, and participate in Agile planning. Secure and continuously monitor information systems according to DoD guidance, including RMF and STIG compliance activities.

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.

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 the operational health, compliance, security, lifecycle, and technical administration of Veeva Clinical and Regulatory platforms. Coordinates configuration, integrations, upgrades, access management, validated-system operations, audit readiness, incident response, vendor performance, budgets, and roadmap execution. Partners with global R&D, IT, security, quality, finance, procurement, legal, and business stakeholders while leading matrixed technical resources and supporting inspection-ready operations.

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.

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.

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.

Own and maintain a 10-bay QNAP NAS and Dropbox Business integration for secure footage storage and collaboration. Responsibilities include configuring storage, managing remote access and permissions, establishing file workflows, creating and testing independent backups, troubleshooting systems, and documenting setup and recovery procedures. The role begins with a systems review and approved remediation, followed by ongoing maintenance and support.

Administer and optimize Greenhouse, ModernLoop, and related recruiting systems. Configure workflows, permissions, templates, interview plans, integrations, and automations; maintain ATS data quality and reporting readiness; provide system support; coordinate with vendors and systems engineers; and document processes and training materials. The role also identifies AI-enabled automation opportunities to improve recruiting efficiency and accuracy.

Administer Atlassian Cloud (Jira, JSM, Confluence); design workflows, automations, and governance; develop REST API/webhook integrations; manage Atlassian Access (SSO/SCIM); build advanced JQL dashboards and reports; support cloud migrations, audits, and enterprise system integrations.

Administers and optimizes the Defense Logistics Agency’s Okta environment, including deployment, configuration, integrations, maintenance, upgrades, performance analysis, automation, documentation, training, and technical support. Resolves connectivity issues, recommends system enhancements, supports operational systems, and directs system administrators. Requires advanced knowledge of application networking, load balancing, and fault tolerance, plus Okta certification and five years of professional Okta experience.

Administer and support multiple go-to-market and sales technology platforms. Manage user accounts, permissions, roles, access requests, reports, dashboards, workflows, and basic configurations. Provide Tier 1 troubleshooting and documentation, monitor platform health, support implementations and integrations, and identify process improvements. Partner with Sales, Marketing, Customer Success, Revenue Operations, and Enablement teams while exploring AI and automation opportunities.

Administer and troubleshoot IBM z/OS network systems and connectivity, including VTAM, TCP/IP, TN3270, FTP, Policy Agent, and SMTP. Manage TSO, ISPF, JCL, VSAM, catalogs, and JES2 operations. Develop automation scripts and monitoring or reporting tools, support MQ, DB2, CICS, file transmission, printing, and email infrastructure, and collaborate with enterprise network and security teams.

Administer and support IBM z/OS environments, including installations, upgrades, maintenance, lifecycle management, and complex troubleshooting. Use SMP/E for software maintenance, PTFs, APARs, and HOLDDATA processing. Develop REXX automation and administer z/OSMF services and workflows. Monitor performance, availability, capacity, and system health; support upgrades, migrations, disaster recovery testing, production operations, and on-call activities. Collaborate across infrastructure teams, maintain technical documentation, and mentor other mainframe administrators.

Administer Windows and macOS systems, identity platforms, networks, endpoints, NAS storage, cloud services, and creative production infrastructure. Provide Tier 1 and Tier 2 support, manage onboarding and offboarding, troubleshoot Adobe and 3D production tools, maintain documentation and inventory, monitor system health, and support workstation, server, and software deployments. The role is fully onsite in Culver City, with occasional weekend maintenance and after-hours support responsibilities.

Seeking a Senior Relativity Senior Systems Administrator to manage and implement Automated Litigation Support solutions and maintain system infrastructure, supporting projects that enhance network systems in the legal and IT domains.

Manage archiving of Relativity databases, design IT systems, supervise personnel, ensure quality control, prepare documentation, and conduct training.

The Relativity Senior Systems Administrator will maintain and improve network systems, oversee litigation support applications, manage infrastructure, and ensure document and system compliance. The role requires hands-on experience with complex systems and thorough knowledge of IT environments and security.

The Senior Systems Administrator will manage Relativity databases, consult with legal personnel, design IT systems, supervise staff, and ensure project compliance and documentation.

Lead administration and sustainment of the Advana data platform for USMC cybersecurity reporting. Build secure ETL/ELT pipelines in Databricks, develop advanced Qlik Sense dashboards, integrate eMASS via APIs, implement data governance, produce technical documentation, and provide knowledge transfer and stakeholder support.

Deploy and maintain AI enablement infrastructure (MCP servers, AI agents, AI features in SaaS), manage service accounts and API keys, automate and containerize services, support enterprise IT systems, document integrations and runbooks, and mentor IT support staff.

Manage and scale on-premise and cloud infrastructure supporting engineering, manufacturing, and secure programs. Administer Windows and Linux servers, Proxmox virtualization, Microsoft 365 services, networking, backups/DR, monitoring, and CMMC Level 2 security efforts. Automate tasks with PowerShell or Bash and support incident response and system availability.

Owns the lifecycle, security, and administration of company devices, Mac MDM, user accounts, endpoint controls, networks, servers, backups, logging, and vulnerability remediation. Supports field deployments and customer-site infrastructure, maintains IT policies and documentation, coordinates shared services with parent-company IT, evaluates new tools, and communicates project risks and tradeoffs to leadership.