Sr. IT Systems Administrator I (II)

Flexible Work Arrangement: Hybrid - Audubon, PA

We are seeking a skilled Microsoft Systems Administrator to join our team and play a critical role in managing, securing, and optimizing our Windows‑based and cloud‑integrated infrastructure, with a strong emphasis on compliance with NERC CIP (North American Electric Reliability Corporation Critical Infrastructure Protection) standards. The ideal candidate will have deep experience with Windows Server administration, Active Directory, Entra ID, Azure services, Microsoft 365, automation (PowerShell and Ansible), virtualization technologies, patching, security hardening, and enterprise configuration management. This position requires a proactive approach to problem‑solving, system reliability, regulatory compliance, and continuous improvement across both on‑premises and cloud Microsoft platforms.

Essential Functions:

• Design, implement, and manage Windows Server infrastructure to ensure high availability, reliability, and performance.
• Administer and enhance Active Directory and Entra ID, including OU structure, Group Policy, identity governance, conditional access, MFA, and privileged access controls.
• Support and manage Microsoft 365 services, including Exchange Online, SharePoint Online, Teams, and security/compliance configurations.
• Implement and maintain Azure services such as Azure AD Connect, Azure Virtual Machines, Azure Backup, Azure Monitor, and role‑based access controls.
• Drive automation across on‑prem and cloud environments using PowerShell, Ansible, MECM, Intune, and DSC, focusing on provisioning, configuration management, compliance enforcement, patching, and operational workflows.
• Develop and maintain automation playbooks and scripts to improve efficiency, reduce manual effort, and ensure consistent system configurations.
• Administer and support virtualization platforms, including Hyper‑V and VMware, ensuring optimal performance, resource allocation, and high availability.
• Manage virtual machine lifecycle operations — provisioning, configuration, snapshots, migrations, performance tuning, and decommissioning.
• Implement security best practices, including system hardening, vulnerability remediation, identity protection, and CIP‑aligned compliance controls.
• Perform patch management and software deployments across Windows and cloud environments in accordance with regulatory and security requirements.
• Monitor system health, analyze logs, and troubleshoot complex issues across on‑prem and cloud platforms to ensure stability and operational continuity.
• Maintain documentation for system configurations, procedures, and compliance evidence to support audits and regulatory obligations.
• Collaborate with cross‑functional teams to support application deployments, cloud integrations, virtualization strategy, and infrastructure modernization initiatives.