Senior Systems Administrator - Windows

Primary Duties & Responsibilities

• Administer 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 VMware vSphere/ESXi and 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 & Experience

Education:

Experience:

Skills & Other Requirements

• 5+ 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: VMware vSphere/ESXi and 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 Conditions

• The work mode of Finisar India is Hybrid i.e. 3 days at office. (Tue, Wed, Thurs)


• Should be flexible to support different time zones


• Should be flexible to be available 24*7 as needed


• Should have strong interpersonal communication skills to collaborate with stakeholders and peer groups across the locations of Coherent.


• Should be available for on-call support on rotational basis.

Culture Commitment

Ensure adherence to company s values (ICARE) in all aspects of your position at Coherent Corp.:

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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.