Systems Administrator -

About the role

As a Systems Administrator at Tutor Perini Corp., you will be responsible for ensuring the stability and efficiency of our hybrid IT environment. You'll work across Microsoft Windows Server, Microsoft 365, VMware vSphere, Nutanix HCI, and hybrid Entra ID / on‑premises Active Directory. Your role includes managing core infrastructure, supporting identity and access services, maintaining virtualization platforms, and contributing to disaster recovery and business continuity efforts. You'll also help improve operational workflows through automation and scripting. As part of the infrastructure team, you'll operate in a fast‑paced environment supporting geographically dispersed teams and remote users. Configure, maintain, and optimize Microsoft Windows Server environments, including patching, performance tuning, and system hardening. Administer and support Microsoft 365 services such as Exchange Online, SharePoint, Teams, OneDrive, and Intune to ensure reliable and secure collaboration across the organization. Manage and operate VMware vSphere infrastructure, including ESXi hosts, virtual machines, resource pools, templates, and cluster health. Support and maintain HCI platforms, ensuring stable compute, storage, and virtualization performance across hybrid workloads. Administer hybrid identity environments, including Entra ID (Azure AD) and on premises Active Directory, with responsibilities spanning user lifecycle management, GPOs, DNS, DHCP, and authentication services. Implement and maintain backup, replication, and disaster recovery solutions to support business continuity and ensure rapid recovery from system failures or outages. Monitor system performance, capacity, and availability, and respond to operational incidents to maintain a stable and resilient infrastructure. Develop and maintain automation and scripting (primarily PowerShell) to streamline administrative tasks, improve consistency, and reduce manual effort. Document system configurations, operational procedures, and infrastructure standards to support knowledge sharing and compliance requirements. Collaborate with cross functional teams to support enterprise applications, troubleshoot complex issues, and deliver reliable IT services to distributed offices and remote users. Apply security best practices across servers, cloud services, and virtualized environments to safeguard systems and data.