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About the role
Company: Sun Knowledge Pvt. Ltd. Location: Kolkata (Sector V, Salt Lake) Employment Type: Full-time Shift: US Shift (Night Shift) Working Days: 5 Days a Week Transportation: Company Drop Facility Available Notice Period: Immediate to 30 Days Preferred Job Summary Sun Knowledge Pvt. Ltd. is hiring an experienced Senior Systems & Cloud Administrator to manage and support our enterprise Microsoft infrastructure, cloud services, Windows servers, and identity management. The ideal candidate should have hands-on experience with Microsoft 365, Exchange Online, Active Directory, Windows Server, and Microsoft Entra ID, along with strong troubleshooting and automation skills. Key Responsibilities Manage Microsoft 365 tenants, user accounts, licensing, and security policies. Administer Exchange Online and Hybrid Exchange environments. Configure and maintain Active Directory, Group Policy (GPO), DNS, and DHCP. Manage Windows Server infrastructure and virtualization platforms. Administer Microsoft Entra ID (Azure AD), identity lifecycle, and access governance. Perform server monitoring, maintenance, patching, and upgrades. Implement and manage backup, recovery, and disaster recovery solutions. Automate administrative tasks using PowerShell scripting. Troubleshoot infrastructure, server, email, and cloud-related issues. Support internal and external infrastructure audits, including IAM and Microsoft 365 compliance. Maintain infrastructure documentation and standard operating procedures. Coordinate with internal teams to ensure high availability and security of IT systems. Desired Candidate Profile 7+ years of experience in System Administration or Cloud Infrastructure. Strong expertise in: Microsoft 365 Administration Exchange Online / Hybrid Exchange Active Directory Windows Server Administration Microsoft Entra ID (Azure AD) Group Policy (GPO) DNS & DHCP PowerShell Scripting Backup & Recovery Virtualization (Hyper-V/VMware) Identity & Access Management (IAM) Excellent troubleshooting and communication skills. Ability to work independently in a fast-paced environment. Qualification Bachelor's degree in Computer Science, Information Technology, or a related discipline. Microsoft certifications (Microsoft 365, Azure, Windows Server) will be an added advantage. Why Join Sun Knowledge Pvt. Ltd.? Five-day work week. Company drop facility for US shift employees. Opportunity to work with enterprise Microsoft technologies. Career growth and continuous learning opportunities. Collaborative and technology-driven work environment. Preferred Notice Period: Immediate to 30 days.