Senior Windows Administrator

Work Type : Contract

Work mode : Work from office (onsite)

Location : Bangalore, Electronic city - Phase I

Position Summary

We are seeking a highly experienced Senior Windows Administrator with strong expertise in endpoint management (SCCM), monitoring (SCOM), OS imaging, vulnerability remediation, and cloud-based virtual machine operations. This role will be responsible for managing enterprise Windows environments across on-premises and cloud-hosted virtual machines, ensuring secure, compliant, and highly available infrastructure supporting global operations.

Key Responsibilities

Windows Server & Endpoint Administration

• Administer and support Windows Server environments (2016/2019/2022) across enterprise infrastructure
• Manage and troubleshoot Windows OS, system services, registry, and local security policies
• Provide advanced L2/L3 support for server and endpoint-related issues

SCCM (Microsoft Endpoint Configuration Manager)

• Design, implement, and manage SCCM infrastructure
• Create, manage, and deploy:
• OS images (gold images) and task sequences
• Application packaging and deployments
• Patch management and software updates
• Monitor and troubleshoot SCCM client health and distribution issues
• Automate deployments and compliance reporting

SCOM & Monitoring

• Configure and support SCOM (System Center Operations Manager)
• Develop monitoring strategies for:
• Servers, applications, and infrastructure components
• Create dashboards, alerts, and thresholds for proactive issue detection
• Perform root cause analysis using monitoring and alerting tools

Cloud & Virtual Machine Management

• Manage and support Windows workloads on cloud-based virtual machines (Azure preferred)
• Provision, configure, and maintain cloud VMs and hybrid environments
• Troubleshoot issues across IaaS cloud platforms including compute, storage, and networking layers
• Support cloud migrations and modernization initiatives

Vulnerability Management & Security

• Identify, assess, and remediate security vulnerabilities using enterprise tools
• Perform:
• Patch compliance enforcement
• Security hardening and baseline enforcement
• Work with security teams to ensure compliance with audit and governance standards

Imaging & Automation

• Create, maintain, and optimize standard OS images for enterprise deployment
• Automate manual processes using PowerShell and scripting tools
• Standardize deployment practices for consistency and scalability

Performance & Troubleshooting

• Diagnose and resolve issues related to:
• System performance, CPU, memory, disk, and network
• Use event logs, monitoring tools, and system diagnostics for deep troubleshooting
• Ensure high system availability and reliability

Collaboration & Operations

• Participate in incident, problem, and change management (ITIL framework)
• Collaborate with cloud, network, security, and application teams
• Maintain SOPs, runbooks, and technical documentation
• Support on-call rotations and planned maintenance activities

Required Skills & Experience

• Bachelors degree in IT, Computer Science, or related field
• 10+ years of experience in Windows system administration
• Strong hands-on expertise in:
• Windows Server (2016/2019/2022)
• SCCM (Configuration Manager) OS deployment, patching, packaging
• SCOM monitoring and alerting
• OS Imaging and task sequence management
• Vulnerability remediation and patch compliance
• Experience managing cloud-based virtual machines (Azure preferred)
• Strong troubleshooting skills across infrastructure and OS layers
• Experience with:
• PowerShell scripting and automation
• Enterprise monitoring tools
• Good understanding of:
• Networking fundamentals
• Security best practices
• ITIL processes

Preferred Qualifications

• Microsoft certifications (Windows Server, SCCM, Azure)
• Experience with:
• Azure Monitor / Log Analytics
• Endpoint security tools (Defender, Qualys, etc.)
• Hybrid infrastructure environments
• Exposure to Intune / modern endpoint management (optional but valuable)