Top Systems Administrator Jobs in Los Angeles, CA

Designs and deploys secure Windows, Active Directory, Azure, network, and cloud environments in classified settings. Establishes secure baselines, hardens systems, supports RMF and ATO activities, resolves Windows issues, monitors logs, documents configurations, and provides cybersecurity architecture guidance. The role requires collaboration with ISSMs, ISSOs, project teams, and stakeholders while adhering to DoD security directives and NIST standards.

Administer Red Hat Linux, AWS cloud infrastructure, open-source platforms, and scalable big-data environments. Build CI/CD pipelines, maintain systems, patch applications, manage backups and VPNs, troubleshoot production issues, and support security compliance. Lead AWS and cluster networking design, monitor systems, respond to incidents, coordinate vendors, and develop secure configurations across development, test, and production environments.

Administer secure and air-gapped enterprise systems, including installation, configuration, upgrades, patching, virtualization, Windows and Linux environments, monitoring, troubleshooting, documentation, and Tier II support. The role maintains compliance and security standards, supports users, resolves infrastructure issues, and escalates problems as needed. It is onsite in El Segundo, California, requires U.S. citizenship and the ability to obtain a Secret clearance, and may involve occasional travel.

Administer, configure, customize, secure, and maintain the Teamcenter PLM system. Manage workflows, data models, user access, integrations, upgrades, and installations; troubleshoot issues and provide technical user support and training. The role requires strong Teamcenter architecture expertise, database and operating-system knowledge, CAD integration experience, and the ability to obtain a U.S. Secret clearance.

Administer classified Linux and Windows infrastructure onsite, including servers, storage, file systems, authentication, backups, software configuration, workstations, and system maintenance. Lead infrastructure installation and configuration, troubleshoot complex hardware and operating-system issues, collaborate with engineering and program teams, mentor junior administrators, and support 24/7 operations. An active Secret clearance, U.S. citizenship, Linux and Windows Server experience, virtualization knowledge, and Security+ or equivalent certification are required.

Administer servers, networks, cloud infrastructure, security controls, backups, and DevOps pipelines across development, QA, and production environments. Troubleshoot performance issues, maintain high availability, deploy releases, improve network connectivity and release management, manage Azure resources, conduct system audits, and document configurations. The role also supports enterprise security, server administration, virtualization, monitoring, and recovery procedures.

Administers and maintains servers, operating systems, network services, storage, virtualization, and related infrastructure. Monitors performance, capacity, availability, backups, logs, alerts, and security status; resolves incidents; manages accounts, permissions, patches, and security settings. Performs recovery testing, documents configurations, coordinates infrastructure changes across technical teams, and automates routine administration and monitoring tasks.

Own and administer enterprise collaboration, workflow, ticketing, and employee service platforms including Slack, Jira, Confluence, and ESM tools. Design self-service workflows, virtual agents, AI-enabled knowledge systems, integrations, and automation using APIs and scripting. Manage platform enhancement roadmaps, asset management, reporting, governance, auditability, and compliance while improving the employee digital workplace experience.

Administers and optimizes NetSuite, Concur, FloQast, and related finance systems. Manages permissions, integrations, workflows, reporting, data quality, audit readiness, user support, documentation, and system enhancements. Partners with Finance, IT, and business stakeholders to deliver scalable, compliant solutions and continuous process improvements across global teams.

Leads administration and optimization of multi-location servers, applications, networks, and cloud or hybrid environments. Installs, configures, upgrades, monitors, secures, and troubleshoots systems; performs vulnerability management, patching, hardening, backup and disaster recovery activities. Uses automation, scripting, virtualization, containers, and performance tools to improve reliability. Directs other system administrators, provides user and administrator training, resolves connectivity issues, and recommends technology improvements. A Secret clearance and extensive systems administration experience are required.

Provides Level 2 Linux/Unix systems administration in a 24/7 NOC environment. Responsibilities include troubleshooting, monitoring, patching, reimaging, package management, incident remediation, root cause analysis, documentation, compliance, operational reporting, automation, scripting, and training Level 1 analysts. Supports development, test, and production infrastructure across multiple locations and works rotating shifts.

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.

Manage the organization’s CMMC compliance program through planning, risk tracking, control assessment, POA&M oversight, evidence collection, policy governance, and certification readiness. Coordinate technical, operational, and business stakeholders; monitor KPIs, budgets, timelines, and risks; communicate status to executives; resolve obstacles; and improve compliance processes. The role requires knowledge of NIST SP 800-171, CMMC controls, cybersecurity frameworks, export controls, and project management tools.

Owns Cosm’s identity, endpoint, SaaS, and employee technology systems. Responsibilities include administering Okta, automating joiner-mover-leaver processes, managing zero-touch provisioning, deploying and maintaining macOS and Windows devices through Intune and Jamf, integrating SaaS applications, conducting access reviews, supporting audits, automating administration with scripts and APIs, and resolving escalated identity and endpoint issues. The role also develops documentation, enables service desk self-service, and mentors IT teammates.

Administer and enhance Apartment Life’s HubSpot environment, integrations, automations, workflows, permissions, data structures, dashboards, and reporting. Handle helpdesk requests, data cleanup, audits, system-generated work, onboarding and offboarding, and synchronization issues. Build and test Node.js workflow actions and API integrations, maintain system stability and data integrity, document solutions, and collaborate with technology leadership and cross-functional teams in a fully remote environment.

Owns and administers Costpoint and related financial systems, leading configuration, integrations, troubleshooting, reporting, data models, automation, and technical solution design. Translates finance business needs into system enhancements, manages data flows and reconciliation, resolves complex issues, supports audit readiness, and mentors junior administrators. Partners with Finance, Accounting, IT, and leadership while supporting Agile delivery and continuous improvement.

Maintain and configure network infrastructure, Nokia optical hardware, automation applications, servers, storage, and file systems. Script deployments, troubleshoot networks, test containerized optical network simulations and embedded software, and manage symmetric key lifecycles. The role also develops infrastructure solutions and contributes to new products, standards, processes, and operational plans.

Own and improve Salesforce and go-to-market systems, including automation, integrations, CPQ migration, quoting workflows, product catalogs, pricing rules, data structures, and reporting processes. Partner with Sales, Marketing, Finance, Revenue Operations, and Customer Success teams to scope and implement scalable solutions. Administer AI-powered tools, document workflows, conduct training, and support cross-functional strategic decisions.

Administer and secure Windows, Microsoft 365, cloud, identity, network, virtualization, backup, and data center infrastructure. Support tenant consolidation, acquisitions, patching, monitoring, disaster recovery, endpoint management, second-level user support, and engineering applications. Automate provisioning and reporting, maintain documentation and runbooks, support compliance enclaves, and provide backup coverage for identity and network operations. Occasional travel, maintenance windows, on-call work, and physical data center activities are required.

Lead Salesforce administration for Sales and Service Clouds, manage integrations and data flows, define system roadmaps, optimize business processes, document configurations, and partner cross-functionally to drive scalable GTM system solutions.

Manage enterprise systems administration and patch management across Windows and Linux environments. Lead security patch deployment, vulnerability remediation, STIG-compliant image development, Tier III troubleshooting, and compliance reporting. Analyze ACAS/Nessus results, remediate critical DoD vulnerabilities within required timelines, maintain system security posture for ATO requirements, and support federal customer operations across multiple potential locations.

Own and enhance Salesforce CPQ and Quote-to-Cash architecture, including pricing engines, product catalogs, bundles, approvals, custom JavaScript, and enterprise Salesforce Flows. Diagnose production issues, optimize calculation performance, manage sandbox releases through Gearset Pipelines, and partner with Go-to-Market, Finance, and Product stakeholders. The role also mentors administrators, leads technical initiatives, and uses AI development tools to accelerate configuration, testing, and system improvements.

Administer and optimize on-premises Appian environments across development, test, staging, and production. Responsibilities include configuration, deployments, upgrades, patching, monitoring, troubleshooting, access control, performance management, incident resolution, and operational documentation. The role supports Java enterprise applications in Linux environments and collaborates with developers, infrastructure, cybersecurity, database, release management, vendors, and federal customers.

Administer and maintain large-scale HPC/AI environments, including compute, storage, networking, software stacks, and Slurm scheduling. Develop automation for provisioning, configuration, and monitoring; optimize systems for benchmarking, capacity planning, and performance. Support security patching, troubleshooting, application deployment, researcher support, documentation, vendor coordination, procurement, and lifecycle management. This remote or hybrid individual contributor role requires approximately four domestic trips annually and U.S. citizenship for access to government research facilities.

Administer and troubleshoot client desktop, server, networking, virtualization, Microsoft 365, Azure, and cloud infrastructure environments. Resolve escalated technical issues, support security and backup solutions, maintain documentation, and contribute to process improvement. Mentor Systems Technicians, provide advanced customer support, assist with AI-enabled administration and productivity solutions, and participate in on-call coverage as needed.