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8 results for Systems Administrator in Murrieta, CA

IT System Administrator

Rowland Heights, CA
onsite
Temporary / Contract
45 - 50 USD / Hourly
Robert Half is seeking an experienced Systems Administrator to support, maintain, and improve enterprise IT infrastructure. This role will be responsible for managing servers, networks, cloud services, security tools, and end-user environments while ensuring system reliability, performance, and security. The ideal candidate will have hands-on experience with Windows Server environments, Microsoft 365, virtualization, networking, firewalls, backups, and infrastructure troubleshooting. This position requires a proactive problem solver who can manage daily operations while supporting ongoing technology initiatives. <ul><li>Administer, maintain, and troubleshoot Windows Server environments</li><li>Manage Active Directory, Group Policy, user accounts, permissions, and access controls</li><li>Support Microsoft 365 administration, including Exchange Online, Teams, SharePoint, OneDrive, and user management</li><li>Monitor system performance, availability, and security of servers and infrastructure</li><li>Perform server maintenance, patching, upgrades, and troubleshooting</li><li>Support virtualization environments including VMware and/or Hyper-V</li><li>Configure, maintain, and troubleshoot network infrastructure including switches, routers, wireless access points, VLANs, and VPNs</li><li>Support firewall administration, rule reviews, security policies, and connectivity troubleshooting</li><li>Manage backup solutions, disaster recovery processes, and system restoration testing</li><li>Assist with cloud infrastructure support across platforms such as Azure and AWS</li><li>Troubleshoot hardware, software, and infrastructure issues escalated from support teams</li><li>Implement and maintain endpoint security tools, MFA, antivirus, and security best practices</li><li>Create and maintain technical documentation, system diagrams, and standard operating procedures</li><li>Work with vendors and third-party providers to resolve technical issues</li><li>Participate in infrastructure projects, upgrades, migrations, and deployments</li></ul>
2026-07-11T00:00:00Z

IT Systems Administrator

San Marcos, CA
onsite
Temporary / Contract
31.6635 - 36.663 USD / Hourly
We are looking for an IT Systems Administrator to provide onsite technical support for a mission-driven nonprofit serving children, youth, and families in California. This long-term contract position is ideal for a hands-on, detail-focused individual who can balance daily user support with infrastructure administration in a Microsoft-centered environment. The role will act as a key technology resource for staff, helping maintain reliable systems that support both office-based and distributed employees. Responsibilities: • Deliver onsite and remote technical assistance for employees, resolving issues involving computers, software applications, printers, connectivity, and security tools. • Administer core Microsoft technologies, including Windows-based systems, Outlook, Teams, and related business productivity platforms. • Coordinate employee onboarding and offboarding by preparing laptops, creating and removing accounts, assigning access, and ensuring a smooth technical setup. • Support the organization’s infrastructure by maintaining servers, network devices, and Cisco-related equipment across the environment. • Manage user access and device support for remote staff, helping maintain secure and dependable connectivity for a distributed workforce. • Contribute to IT planning efforts by identifying system needs, recommending improvements, and participating in practical technology decisions. • Maintain accurate technical documentation and help ensure information is transferred correctly into required healthcare-related systems when necessary. • Provide support for business applications such as QuickBooks, Paycom, and Salesforce as needed, coordinating troubleshooting and user guidance. • Monitor and organize technology assets and equipment to help keep daily operations running efficiently across the organization.
2026-07-17T00:00:00Z

IT Systems Manager

Irvine, CA
onsite
Temporary / Contract
59.375 - 68.75 USD / Hourly
We are looking for an IT Systems Manager to oversee and strengthen a modern enterprise technology environment in Irvine, California. This Long-term Contract position will focus on cloud services, infrastructure reliability, endpoint management, and security operations while supporting business-critical systems across the organization. The ideal candidate brings deep technical expertise across Microsoft 365, Azure, AWS, networking, and compliance-minded IT practices in a regulated setting. Responsibilities: • Lead administration and optimization of Microsoft 365 services, including user access, collaboration tools, and platform governance. • Manage identity and access controls across Azure AD / Entra ID and Active Directory to support secure, reliable authentication. • Oversee SharePoint Online, Intune, and endpoint management solutions to improve device performance, compliance, and user support. • Maintain and enhance network infrastructure, firewalls, and Meraki environments to ensure connectivity, stability, and protection. • Support cloud operations across Azure, AWS, and other SaaS platforms, including configuration, monitoring, and service improvement. • Direct backup, recovery, and business continuity processes to protect critical data and reduce operational risk. • Implement and monitor endpoint security and broader information security measures aligned with organizational standards. • Contribute to migration-related initiatives and system changes by coordinating technical execution, documentation, and risk controls. • Prepare and maintain technical records, validation materials, and audit-ready documentation in support of regulated IT operations.
2026-07-17T00:00:00Z

IT Systems Generalist

San Marcos, CA
onsite
Temporary / Contract
38 - 40 USD / Hourly
Robert Half is seeking an IT Systems Administrator; this is an opportunity for a well-rounded IT Systems Administrator who enjoys balancing infrastructure administration with end-user support. You'll serve as the primary onsite IT resource, supporting Microsoft technologies, network infrastructure, and day-to-day technical operations while partnering closely with leadership on ongoing technology initiatives. · Administer and support Microsoft technologies including Microsoft 365, Teams, Outlook, and Windows environments. · Manage employee onboarding and offboarding, including laptop imaging, equipment deployment, account provisioning, and user access. · Maintain Active Directory, user accounts, permissions, and remote access. · Support and troubleshoot network infrastructure including switches, wireless connectivity, and Cisco networking equipment. · Coordinate endpoint management, remote devices, and ongoing technical support for a distributed workforce. · Maintain IT documentation, asset inventory, and technical procedures. · Assist with infrastructure planning, technology improvements, and IT best practices. · Coordinate with technology vendors and third-party service providers as needed. · Help ensure secure, reliable, and efficient IT operations across the organization.
2026-07-10T00:00:00Z

Compliance Administrator

Pomona, CA
onsite
Temporary / Contract
38 - 48 USD / Hourly
We are looking for a detail-oriented Compliance Administrator to support compliance and ethics operations for a healthcare-focused organization in Pomona, California. This Compliance Administrator position centers on helping maintain regulatory adherence, strengthening internal controls, and promoting staff awareness of privacy, consent, and patient rights obligations. The Compliance Administrator works closely with leadership to coordinate program activities, review risk areas, and contribute to a culture of accountability and ethical practice. Key Responsibilities:• Partner with the Chief Compliance and Privacy Officer to support the day-to-day coordination and ongoing administration of the compliance and ethics program.• Work with departments across the organization to help create, revise, distribute, and retain compliance-related policies, procedures, and supporting documentation.• Monitor applicable federal, state, county, and organizational requirements and help communicate regulatory updates to staff in a clear and practical manner.• Deliver guidance and education on topics such as privacy, confidentiality, informed consent, patient rights, complaints, and grievance processes.• Receive, document, and help review complaints, grievances, provider change requests, and privacy-related concerns, ensuring timely follow-up and proper tracking.• Respond to internal hotline activity, route issues for appropriate follow-up, and maintain records used to identify patterns and improvement opportunities.• Assist with audits, assessments, and investigative reviews to identify compliance risks, summarize findings, and support corrective action planning.• Contribute to regulatory and contractual readiness efforts, including support for Medi-Cal site certifications and Medicare revalidation activities.• Follow all required safety standards, organizational policies, and mandated procedures while carrying out assigned responsibilities.\ Benefits: Health, Dental, Vision, 401k, and Sick Time Off.
2026-07-16T00:00:00Z

Control Systems Analyst II

Chino, CA
onsite
Temporary / Contract
100 - 120 USD / Hourly
We are seeking a Control Systems Analyst II who can serve as a lead technical resource responsible for the design, support, maintenance, and optimization of industrial automation and control systems in Chino, CA. This role supports critical plant operations through PLC, SCADA, DCS, HMI, and network administration while providing guidance and training to technical staff. Key Responsibilities<ul><li>Design, program, configure, and troubleshoot PLC, SCADA, DCS, HMI, and industrial control systems.</li><li>Support automation networks, communications infrastructure, LAN/WAN environments, telemetry, radio, and microwave systems.</li><li>Perform software and firmware upgrades, system enhancements, and process automation improvements.</li><li>Troubleshoot complex hardware, software, instrumentation, and network issues.</li><li>Participate in automation, instrumentation, and controls projects from design review through testing and startup.</li><li>Develop and maintain technical documentation, SOPs, system diagrams, and operating procedures.</li><li>Train end users and provide technical guidance to operations and maintenance teams.</li><li>Lead and coordinate work assignments for technical staff and contractors.</li><li>Evaluate new technologies, recommend system improvements, and support long-term automation strategies.</li></ul>
2026-07-17T00:00:00Z

Desktop Support Administrator - Tier III

Santa Ana, CA
onsite
Temporary to Hire
47.5 - 55 USD / Hourly
We are looking for an experienced Desktop Support Administrator - Tier III to provide advanced technical support for end users in Santa Ana, California. This contract position with permanent potential is ideal for someone who excels at resolving complex desktop issues, maintaining reliable workstation performance, and delivering high-quality service in a fast-paced support environment. The role focuses on hands-on troubleshooting across Microsoft Windows systems, device setup, and user account support while ensuring tickets are handled efficiently and professionally. Responsibilities: • Deliver high-level desktop support for hardware, software, and operating system issues affecting end users. • Diagnose and resolve escalated problems involving Microsoft Windows 10 environments and related workstation technologies. • Manage user accounts, permissions, and access requests within Active Directory. • Respond to service desk requests with timely updates, accurate documentation, and effective issue resolution. • Install, configure, and image desktops, laptops, and other endpoint devices for new and existing employees. • Perform break/fix support for computers, peripherals, and other assigned equipment to minimize downtime. • Troubleshoot system performance, connectivity, and application issues through structured problem-solving techniques. • Coordinate with internal support teams when issues require deeper technical investigation or follow-up.
2026-07-17T00:00:00Z

Security Network Engineer

San Diego, CA
remote
Temporary / Contract
57 - 66 USD / Hourly
We are looking for a Security Network Engineer to support a Contract engagement based in San Diego, California. This role will guide the design and optimization of secure connectivity across a Cisco Viptela SD-WAN environment integrated with Zscaler, with a strong focus on resiliency, user experience, and identity-aware traffic handling. The ideal consultant will bring advanced technical judgment, help shape architecture decisions, and work closely with internal stakeholders to strengthen network security performance during failover and routing events. Responsibilities: • Assess the current Zscaler and Cisco Viptela landscape to identify gaps, risks, and opportunities for improved secure connectivity. • Compare agent-based and tunnel-based deployment approaches, then recommend the most effective model for business, security, and operational needs. • Develop and test failover designs across multiple network circuits to reduce user disruption during provider or path changes. • Refine traffic steering and policy behavior to improve session stability and application access within the SD-WAN environment. • Preserve key identity-related data used for security enforcement and visibility, including user and device context across network flows. • Partner with internal technical teams and external service providers to implement configuration improvements and validate outcomes. • Troubleshoot complex issues involving cloud security controls, SD-WAN routing behavior, and end-user connectivity. • Produce clear technical documentation covering findings, recommended changes, and the target-state architecture. • Advise on routing, segmentation, and secure access strategies involving technologies such as BGP, Cisco routing platforms, Cisco ASA, Palo Alto Firewall, and related network security tools.
2026-07-11T00:00:00Z