We are looking for a Systems Engineer to support and enhance core enterprise infrastructure in Fremont, California. This Contract position will focus on maintaining secure, reliable, and efficient environments across directory services, server platforms, messaging systems, and virtualized technologies. The ideal candidate brings strong technical depth in Microsoft-based infrastructure and a proactive approach to troubleshooting, administration, and continuous improvement.<br><br>Responsibilities:<br>• Administer and optimize Active Directory environments, including user access, group policies, and directory health.<br>• Manage Microsoft Windows Server systems to ensure stability, performance, and ongoing operational readiness.<br>• Support Azure Active Directory administration, including identity management and access control configuration.<br>• Maintain and troubleshoot Citrix technologies to provide dependable application and desktop delivery services.<br>• Oversee Microsoft Exchange administration, including mailbox management, system performance, and issue resolution.<br>• Monitor infrastructure services and respond to incidents with timely diagnosis and corrective action.<br>• Implement system updates, patches, and configuration changes while minimizing service disruption.<br>• Document technical procedures, environment changes, and support activities to maintain operational visibility.

• Hands-on experience administering Active Directory in an enterprise environment.<br>• Strong working knowledge of Microsoft Windows Server administration and support.<br>• Experience managing Azure Active Directory and related identity services.<br>• Familiarity with Citrix technologies for virtual application or desktop environments.<br>• Practical experience supporting Microsoft Exchange systems.<br>• Ability to diagnose infrastructure issues and resolve them in a structured, efficient manner.<br>• Strong documentation, communication, and organizational skills.

<h3 class="rh-display-3--rich-text">Technology Doesn't Change the World, People Do.^®</h3> <p>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.</p> <p>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. <a href="https://www.roberthalf.com/us/en/mobile-app" target="_blank">Download the Robert Half app</a> and get 1-tap apply, notifications of AI-matched jobs, and much more.</p> <p>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 <a href="https://roberthalf.gobenefits.net/" target="_blank">roberthalf.gobenefits.net</a> for more information.</p> <p>© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s <a href="https://www.roberthalf.com/us/en/terms">Terms of Use</a> and <a href="https://www.roberthalf.com/us/en/privacy">Privacy Notice</a>.</p>