I.T. Systems Administrator

This position is 6-months Contract-to-Hire with infrequent visits to our client's office in Irvine, CA (95% remote). We are seeking a highly skilled IT Systems Administrator. The ideal candidate will have a strong background in managing and supporting enterprise systems, including Windows Server environments, VMware, AWS, Azure Active Directory, Microsoft 365, and Citrix. Additionally, experience with single sign-on (SSO) solutions, preferably OKTA, is highly desirable. The role requires expertise in system administration, maintenance, upgrades, troubleshooting, and issue resolution to ensure seamless IT operations. Key Responsibilities: System Administration and Maintenance: Administer, configure, and maintain Windows Server environments (all versions). Manage and optimize virtualized environments using VMware. Oversee cloud-based infrastructure in AWS and Azure Active Directory. Enterprise Tool Support: Manage Microsoft 365 services, ensuring high availability and performance. Implement, configure, and maintain single sign-on solutions, preferably with OKTA. Administer and troubleshoot Citrix environments for application delivery and desktop virtualization. Upgrades and Patch Management: Plan and execute system upgrades and patches to maintain security and performance. Conduct proactive monitoring and capacity planning for IT infrastructure. Troubleshooting and Issue Resolution: Diagnose and resolve complex system and network issues promptly. Collaborate with internal teams to resolve escalated IT support requests. Document procedures, configurations, and incident resolutions in a knowledge base. Qualifications and Skills: Technical Expertise: Proficient in managing Windows Server (all versions). Strong experience with VMware virtualization technologies. Hands-on experience with AWS and Azure Active Directory. Knowledge of Microsoft 365 administration and services. Familiarity with single sign-on (SSO) solutions, preferably OKTA. Proficiency with Citrix environments for application and desktop delivery. Experience: 3-5 years of hands-on experience in IT systems administration. Demonstrated experience with enterprise-level IT tools and environments.