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Job Title: Senior MS Systems Engineer L3 Primary Location: Chicago IL, near O'Hare / Northwest Suburbs Position Type: Full-Time Direct Hire or Contract to Hire ⭐️ Help Save Lives, Inspire Change, and Make an Impact! Come join a mission-driven health organization that improves hundreds of thousands of lives. Overview TalentFish is casting a line for a Senior MS Systems Engineer L3 in Chicago's near west suburbs. This is a hybrid role as needed (approx. 1-2 days per week or less). This position will be primarily focused on managing/maintaining on-premises infrastructure, with some interaction with cloud-based tools such as Azure AD (Entra ID) and Intune. In this role, you will be designing, implementing, managing, and maintaining the organization's Information Technology Systems. Y ou will be working with the architecture team to evaluate and ensure the efficient and secure operation of IT and business systems. The ideal candidate will have in-depth skills in Windows System Administration, Active Directory management, a strong understanding and management of FSMO roles, Group Policy Management, Event Viewer and Event Log analysis, and GPO configuration and maintenance. What You Bring to the Role / Required Skills Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent work experience). Minimum of 5+ years of experience in systems administration, IT infrastructure management, and Experience supporting Microsoft technologies, including MS Windows Server, Microsoft System Center Configuration Manager (SCCM) , MS Office 0365, MS Intune, Active Directory, and Azure AD (Entra ID). Proven experience supporting and managing on-premises infrastructure , including Active Directory, Windows Server, storage systems, and virtualization platforms (e.g., Hyper-V). Comfortable operating in on-premises IT environments , while possessing working knowledge/experience in cloud technologies like Azure AD and Intune. Strong expertise in Active Directory operations, including FSMO role management, Group Policy Objects (GPO), and Event Viewer/Event Log analysis for system diagnostics and auditing. Proven experience in designing, implementing, and maintaining server and storage infrastructures. Experience working with complex IT environments, including Active Directory configurations, Azure AD (Entra ID), VMs, and Hyper-V. Experience working with multiple operating systems, servers, and storage systems management. Experience managing system security, IAM, compliance, and endpoint security using tools like Okta, SentinelOne, or similar. What You'll Do. (Skills Used in this Position) Server Management: Take ownership of on-premises system infrastructure, ensuring stability, performance, and security across physical and virtual environments. Administer and maintain server infrastructure, including installation, configuration, and monitoring. Perform proactive monitoring and diagnostics using Event Viewer and other native tools to ensure server health and system integrity. Perform regular system updates, backups, and ensure high availability of servers. Troubleshoot server-related issues and optimize server performance. Storage Management: Design, implement, and maintain the storage infrastructure ecosystem. Design, implement, and maintain data backup environment, including off-site disaster recovery. Responsible for applying patches, upgrading software, and making sure that data is secure. Maintain the fiber channel switches, cloud storage, and SAN arrangements. Active Directory: Design, implementation, and maintenance of on-premises Active Directory , including group policies, domains, and authentication. Familiarity with Azure Active Directory (Entra ID) in a hybrid capacity is beneficial. Responsibilities include managing domains, troubleshooting Active Directory authenticat