Senior Systems Administrator

DescriptionPrimary Duties & ResponsibilitiesAdminister and support Microsoft Windows Server OS environments including 2016, 2019, 2022, and 2025, ensuring reliability, scalability, and high availability.Manage and maintain Active Directory environments including multi-domain forests, sites, replication, and Group Policy, along with Azure Active Directory (Entra ID) integration.Configure, manage, and secure Microsoft 365 services such as SharePoint Online, OneDrive, Teams.Use Microsoft Endpoint Manager (MEM) including SCCM, Intune, and Autopilot for provisioning, managing, and enforcing compliance on endpoints.Automate repetitive administrative tasks using PowerShell, Azure Automation, and Desired State Configuration (DSC).Monitor system health and performance using SolarWinds, Nagios, Azure Monitor and integrate alerts into ITSM platforms.Support Microsoft Hyper-V for virtual infrastructure, including provisioning, clustering, and disaster recovery.Manage patching and vulnerability remediation with tools like SCCM, ManageEngine Patch Manager Plus, WSUS, and Intune Update Management.Maintain thorough technical documentation, SOPs, configuration baselines, and architectural diagrams.Participate in an on-call support rotation and be available to perform planned maintenance during evenings or weekends as required.Education & ExperienceEducation: Bachelor's or master's degree in computer science, Information Technology, or a related field.Experience: Minimum 6–8 years of hands-on experience in Windows systems administration in a medium to large enterprise environment.Skills & Other Requirements6+ years of proven experience as a Windows System Administrator managing Windows Server (2016, 2019, 2022, 2025).4+ years of experience and expertise in Active Directory administration, Group Policy management, 4 years of experience in administration of Microsoft 365 services: Exchange Online, SharePoint Online, Teams, and OneDrive.Skilled in virtualization technologies: Microsoft Hyper-V.Strong knowledge of Microsoft Azure services including Azure AD (Entra ID), Azure AD Connect, AD FS, Azure VMs, and Azure Automation.Skilled in endpoint management using Microsoft Intune, SCCM, and Windows Autopilot.Proficient in automation and scripting using PowerShell and Desired State Configuration (DSC).Effective in managing updates and patches via Intune Update Management and Patch Manager Plus.Familiarity with modern automation tools including REST APIs and webhooks.Aptitude for implementing AI-assisted automation and scripting solutions.Customer-oriented approach with professional troubleshooting capabilities.Working ConditionsThe work mode of Finisar India is Hybrid i.e. 3 days at office. (Tue, Wed, Thurs)Should be flexible to be available 24*7 shiftsShould have strong interpersonal communication skills to collaborate with stakeholders and peer groups across the locations of Coherent.Culture CommitmentEnsure adherence to company's values (ICARE) in all aspects of your position at Coherent Corp.:Integrity – Create an Environment of TrustCollaboration – Innovate Through the Sharing of IdeasAccountability – Own the Process and the OutcomeRespect – Recognize the Value in EveryoneEnthusiasm – Find a Sense of Purpose in Work  Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.Finisar India (Subsidiary of Coherent Corp) is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to gender identity, sexual orientation, race, color, religion, national origin, disability, or any other characteristic protected by law.