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System Administrator

Job in San Diego, San Diego County, California, 92108, USA
Listing for: Robert Half
Seasonal/Temporary position
Listed on 2026-10-08
Job specializations:
  • IT/Tech
    Systems Administrator, Windows Server, Cybersecurity, M365, SharePoint & Power Platform
Job Description & How to Apply Below
Description

We are seeking a Systems Administrator to support and enhance our Microsoft 365 environment, endpoint management platform, and core infrastructure services. This role will be responsible for administering Microsoft 365 technologies including Entra  (Azure AD), Intune, Exchange Online, Teams, SharePoint Online, and related security controls. The ideal candidate will also possess a strong networking foundation with experience managing firewalls, VPNs, network troubleshooting, and security best practices.

This position requires a proactive technical professional who can support day-to-day operations, troubleshoot complex issues, implement security improvements, and contribute to infrastructure modernization initiatives.

Responsibilities:

+ Administer Microsoft 365, Entra , and Intune environments.

+ Manage identity, access, endpoint security, and device compliance.

+ Support Exchange Online, Teams, SharePoint Online, and related M365 services.

+ Configure and troubleshoot firewalls, VPNs, and network connectivity.

+ Maintain Windows Server, Active Directory, and related infrastructure.

+ Automate administrative tasks using Power Shell.

+ Monitor system health, security, and performance.

+ Provide Tier 2/3 technical support and participate in infrastructure projects.

Requirements

Required Qualifications

+ 3+ years of Systems Administration experience

+ Strong experience supporting Microsoft 365 environments

+ Hands-on administration experience with Entra  (Azure AD)

+ Experience managing Microsoft Intune and endpoint security

+ Knowledge of Exchange Online, Teams, and SharePoint administration

+ Experience troubleshooting Windows 10/11 environments

+ Solid understanding of:
Networking fundamentals, DNS, DHCP, TCP/IP, VPN technologies, Firewall administration

+

Experience with Power Shell scripting and automation

+ Strong analytical and troubleshooting skills

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 ()  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  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 ()  and Privacy Notice () .
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