The Dinerstein Companies – Houston, TX

Overview

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

What You Bring

·         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

Preferred Experience

·         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

What Success Looks Like

·         Stable and reliable IT systems

·         Well-organized and secure M365 and SharePoint environments

·         Proactive issue resolution

·         Minimal disruption to business operations

Why Join TDC

·         Growing organization with national portfolio

·         Hands-on technical role with real impact

·         Exposure to both modern M365 and core infrastructure systems

·         Collaborative IT environment focused on improvement