Systems Administrator

The Dinerstein Companies (TDC) is seeking a System Administrator to support corporate offices, construction operations, and our national property portfolio. This role is responsible for maintaining and supporting a Microsoft 365-centric environment with on-premise infrastructure, including VMware virtualization and SAN storage systems. The ideal candidate is hands-on, detail-oriented, and comfortable working across both modern cloud-based platforms and traditional IT environments. This position plays a critical role in ensuring systems are stable, secure, and scalable to support ongoing company growth.

What You’ll Do

• Administer Microsoft 365 (Exchange, Teams, SharePoint, OneDrive)

• Manage SharePoint file storage and permissions

• Maintain Windows Servers, Active Directory, and VMware environment

• Manage SAN storage systems and support backup and recovery

• Troubleshoot infrastructure, systems, and M365 issues

• Support escalated and backlog IT issues

• Assist with system patching, hardening, and security practices

• Collaborate on deployments, projects, and documentation

Do you have experience in Virtualization tools?, * 4-8 years of systems administration experience

• Strong Microsoft 365 administration experience

• Experience with Active Directory and Windows Server

• VMware virtualization experience preferred

• Experience supporting enterprise environments, * Experience managing VMware and SAN storage environments in production

• Familiarity with hybrid IT environments (M365 + on-prem)

• Exposure to IT security and patch management practices

• Experience supporting distributed environments including corporate and field/construction locations, * Stable and reliable IT systems

• Well-organized and secure M365 and SharePoint environments

• Proactive issue resolution

• Minimal disruption to business operations