Summary: Seeking a highly motivated Systems Administrator to manage and maintain diverse IT infrastructure, ensuring optimal performance and security across multiple sites. Highlights: 1. Manage and support multi-site Active Directory and Exchange/Office 365 2. Design and implement highly available, secure infrastructure solutions 3. Troubleshoot and maintain servers, applications, and disaster recovery **Responsibilities:** * Manage Microsoft Active Directory and Group Policies across multiple sites. * Support and maintain Multi\-Site On\-premise Exchange SE and Office 365\. * Configure/setup, maintain and troubleshoot servers and services \- automation of redundant processes. * Participate in infrastructure and capacity planning. * Participate in the planning, designing and testing of disaster recovery procedures. * Application and operating system tuning, troubleshooting, and maintenance. * Implement and deploy infrastructure to support a global environment. * Implement and maintain security solutions, including data safeguards, anti\-virus, and remedy processes. * Recommend and implement modifications to the server environment, including troubleshooting and replacement of faulty system hardware. * Perform routine server updates/patching and software deployments. * Conduct ongoing monitoring and maintenance to ensure stability and optimal performance on all server environments * Address operational systems issues including file and share permissions, user accounts and installing applications. * Provide solutions and work closely with helpdesk support staff to support day to day activities. * Strong oral and written communication skills. * Strong problem\-solving skills and experience troubleshooting hardware and software issues. * 5\+ years systems administration experience in multi\-platform environments (Windows/Linux). * Concrete understanding of Windows operating concepts (files, file systems, active directory, replication, processes, service and log management, users, Terminal services, permissions, I/O, devices, etc.). * Solid hands on knowledge of Windows Server 2016/2019/2022/2025\. * Strong understanding and experience with configuring and maintaining Exchange SE and Office 365 * Thorough knowledge of SNMP, DNS, DHCP, SSL certificate and HTTP protocol. * Remote Desktop Connection (client and Terminal Server environment). * Experience with direct/network attached storage devices (Dell PowerVault). * Experience with designing, implementing and supporting Microsoft Clustering. * Experience with virtualization technology such as VMware and Hyper\-V running in a production environment. * Experience implementing highly available solutions * Experience with designing, implementing and supporting backup and replication technologies for disaster recovery. * Highly motivated and competent with decision\-making ability to work without close supervision. * Knowledge of network architectures, protocols and security fundamentals. * BA/BS in computer science or equivalent education desired but will consider hands on/real world experience. * Must be fluent in the English language.