Senior Windows & VMware System Administrator

Job Title: Senior Windows & VMware System Administrator Location: Andheri (West), Mumbai, Maharashtra Company: XcellHost Cloud Services Pvt. Ltd. Employment Type: Full-Time | On-Site Experience Required: 3–5+ Years Notice Period: Immediate to Short Notice Preferred Job Summary XcellHost Cloud Services Pvt. Ltd. is seeking an experienced Senior Windows & VMware System Administrator to manage, support, and optimize enterprise-grade Windows and virtualized infrastructure. The ideal candidate will possess strong hands-on expertise in Windows Server administration, VMware virtualization, Active Directory, server patching, monitoring, backup & recovery, and ITIL-based operations, supporting mission-critical systems across global environments. This role requires excellent troubleshooting capabilities, strong communication skills, and the ability to work in a 24x7 global support model. Key Responsibilities Server & Infrastructure Management Administer, support, and maintain enterprise Windows Server environments hosted globally. Manage Windows Server platforms (2003–2019), including installation, configuration, performance tuning, and troubleshooting. Support VMware-based virtualized infrastructure, including VM provisioning, upgrades, and maintenance. Perform server patching, OS upgrades, and automation activities to ensure system stability and compliance. Manage and support TSPlus environments. Security, Compliance & Directory Services Administer and support Active Directory, including GPOs, DNS, and DHCP services. Perform vulnerability remediation, cipher hardening, and security compliance activities. Resolve RDP certificate issues and participate in OS hardening initiatives. Manage Splunk installations, VMware Tools upgrades, and security-related system enhancements. Support audit, compliance, and regulatory requirements in enterprise environments. Monitoring, Backup & Recovery Configure and manage SCOM monitoring and alerting to ensure proactive issue detection. Manage backup and recovery operations using Acronis and ensure data integrity. Perform recovery testing and support disaster recovery (DR) activities as required. ITSM & Operational Support Handle Incident, Problem, and Change Management activities using ServiceNow. Provide L2/L3 offshore support and participate in on-call rotations. Analyze recurring issues and prepare Root Cause Analysis (RCA) documentation. Ensure timely resolution of incidents in accordance with SLAs. Collaboration & Knowledge Sharing Conduct Knowledge Transfer (KT) sessions for internal teams. Collaborate with global stakeholders and cross-functional teams. Mentor junior team members and promote best practices within the team. Required Skills & Technologies Technical Skills Windows Server Administration (2003–2019) VMware Virtualization Server Patching & Automation Active Directory, GPO, DNS, DHCP SCOM Monitoring & Alerting Backup & Recovery Tools (Acronis) PowerShell Scripting (Basic to Intermediate) TSPlus Administration   Tools & Platforms Zoho Desk / Zoho Text Soft Skills Strong communication and client coordination skills Excellent troubleshooting and analytical abilities Strong documentation skills (RCA, SOPs, KT) Team-oriented mindset with mentoring capabilities Ability to work in a 24x7 global support environment Education Bachelor’s Degree in Information Technology (B.Sc. IT) or equivalent Preferred Qualifications ITIL Foundation Certification Experience in banking, financial services, or large enterprise environments Exposure to compliance-driven, audit-heavy infrastructures