System Administrator
Irvine, CAJobSeen todaySeen in employer's feed today
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At a glance
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Job overview
The Systems Administrator provides broad technology support across the organization in Irvine, California. The role combines hands-on user support with administration of workplace systems, supporting reliable day-to-day IT operations. It also contributes to systems analysis and process improvement by identifying business needs, supporting collaboration platforms, and assisting with specialized business applications.
Skills & qualifications
Skills
Qualifications
Benefits
Full job description
Description
We are looking for a Systems Adminisrtator with some networking expierence to provide broad technology support across the organization in Irvine, California. This position combines hands-on user support with administration of core workplace systems, helping employees stay productive while maintaining reliable day-to-day IT operations. The role also contributes to systems analysis and process improvement by identifying business needs, supporting collaboration platforms, and assisting with specialized business applications.
Responsibilities:
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Deliver day-to-day technical assistance for employees by troubleshooting hardware, software, account access, and application issues across the business.
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Administer and support Microsoft 365 services, including Teams and SharePoint, to ensure secure and effective collaboration.
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Manage endpoint and identity-related tasks through Intune, Entra ID, Active Directory, and Windows-based environments.
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Monitor and maintain core networking and systems infrastructure to promote stability, connectivity, and performance.
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Partner with business users to gather requirements, analyze workflows, and recommend practical system or process improvements.
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Provide support for specialized business applications and help coordinate issue resolution, updates, and user adoption.
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Assist with basic automation efforts using Power Automate to streamline routine operational tasks and improve efficiency.
Requirements • Experience providing general IT support in a corporate environment, including desktop, application, and user account assistance.
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Working knowledge of Microsoft Windows administration and troubleshooting.
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Hands-on experience with Microsoft 365, including SharePoint and Teams.
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Familiarity with Intune, Entra ID, and Active Directory for device and identity management.
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Understanding of networking fundamentals and general systems support practices.
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Ability to perform systems analysis or business analysis to evaluate needs and support effective solutions.
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Exposure to Power Automate or similar automation tools is preferred.
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Strong communication skills with the ability to support users and explain technical concepts clearly. Technology Doesn't Change the World, People Do.®
Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.
Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more.
All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.
© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) and Privacy Notice (https://www.roberthalf.com/us/en/privacy) .
How this job compares
Set against the 2,498 open Systems Administrator jobs on Olive Jobs, counted November 11, 2026.
- Pay
- This postingNot listed
- California median$103–156K/yr144 salary ranges
- US median$42–61/hr162 hourly ranges
- Openings
- Olive Jobs lists 203 open Systems Administrator jobs in California and 2,498 across the US. 5% of them nationwide are listed as remote or flexible.
- Hiring the most in California
- Robert Half (this employer)9 open
- Saalex Corporation8 open
- Northrop Grumman7 open
- Experience
- Systems Administrator postings that state a minimum ask for 5 years of experience at the median; the middle half ask for 3 to 6 years (2,076 postings).
- Education
- 358 of the 2,498 open Systems Administrator jobs (14%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on November 11, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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