Senior Windows Systems Engineer

ensono; Chennai District; On-site; INR 2,400,000 - 3,600,000; Full time

Job summary

Ensono is a technology adviser and MSP helping clients transform with hybrid cloud, mainframe modernization, and 24/7 support. The Windows Infrastructure SME will own administration, troubleshooting, and lifecycle management of Windows Server and related services across on-prem and Azure environments.

The role requires deep AD, VMware, and Azure expertise, plus PowerShell automation and cross-team collaboration to ensure stability and security in mission-critical systems.

Qualifications

• Bachelor's degree in computer science, Information Technology, Engineering, or equivalent experience.
• 10+ years of hands-on experience managing enterprise Windows Infrastructure environments.
• Minimum 5 to 7 years of strong hands-on experience with Active Directory Domain Services (AD DS).

Responsibilities

• Serve as the technical SME for Windows Server, Active Directory, and VMware technologies, providing L3/L4-level support and guidance.
• Own the administration, maintenance, troubleshooting, and lifecycle management of Windows Server environments.
• Lead complex troubleshooting efforts and act as the highest technical escalation point for critical production incidents, major outages, and customer escalations.
• Perform server provisioning, patching, upgrades, migrations, decommissioning, and operating system modernization initiatives.
• Collaborate with customers and teams to drive infrastructure stability and customer satisfaction.

Skills

Windows Server

Active Directory

VMware vSphere

Azure

PowerShell

Automation

Monitoring tools

Security hardening

Education

Bachelor's degree in Computer Science / IT / Engineering

Tools

ServiceNow

Grafana

LogicMonitor

SolarWinds

SCOM

Dynatrace

Job description

About EnsonoEnsono is an expert technology adviser and managed service provider. As a relentless ally, we accelerate clients' digital transformation to achieve business outcomes that stand to last. Our dedicated team helps organizations optimize today's systems across any hybrid environment with services such as consulting, mainframe and application modernization, public cloud migration and cloud-native development. With certified experts in AWS, Azure and Google Cloud and recognized as Microsoft Datacenter Transformation Partner of the Year, Ensono has over 3500+ associates globally and is headquartered in greater Chicago.We care about your success, offering comprehensive strategic and managed services for mission-critical applications. Our Advisory and Consulting services can help upfront with an application strategy or find the right places for your applications - whether it's public, multi or hybrid cloud, or mainframe. And because we span across all mission-critical platforms, we can meet you wherever you are in your digital transformation journey, with 24/7 support when you need it. We are your relentless ally, flexing with you when challenges emerge so you don't feel stuck in place. With cross-platform certifications and decades of experience, our technology experts have become an extension of your team so you're continuously innovating - doing more with less while remaining secure. And that's just the beginning .

Responsibilities

• Serve as the technical SME for Windows Server, Active Directory, and VMware technologies, providing L3/L4-level support and guidance.
• Own the administration, maintenance, troubleshooting, and lifecycle management of Windows Server 2012/2016/2019/2022/2025 environments.
• Manage and support Active Directory, Group Policy, DNS, DHCP, DFS, IIS, Certificate Services, Failover Clustering, and File & Print Services.
• Lead complex troubleshooting efforts and act as the highest technical escalation point for critical production incidents, major outages, and customer escalations.
• Perform server provisioning, patching, upgrades, migrations, decommissioning, and operating system modernization initiatives.
• Working knowledge of VMware vSphere, vCenter, ESXi, HA, DRS, vMotion, and related virtualization technologies as a primary infrastructure platform.
• Support hybrid infrastructure environments spanning on-premises datacentres and Microsoft Azure, including Azure VM administration, monitoring, backup, recovery, and identity-related services.
• Drive automation and operational efficiency using PowerShell, PowerShell DSC with Azure management, Ansible and other automation technologies is an added plus.
• Administer enterprise monitoring and observability platforms including ServiceNow, Grafana, LogicMonitor, SolarWinds, SCOM, Dynatrace, and similar tools.
• Ensure infrastructure compliance with security standards through vulnerability remediation, Windows hardening, patch management, and audit support.
• Support backup, recovery, disaster recovery, and business continuity solutions using Veeam, Commvault, NetBackup, or equivalent technologies.
• Create and maintain technical documentation, operational runbooks, standards, and support procedures.
• Mentor L1/L2 engineers and provide technical guidance across the Windows practices.

Additional Responsibilities

• Collaborate with customers, architects, project teams, and service delivery leadership to drive infrastructure stability, transformation, and customer satisfaction.
• Serve as the primary Windows Infrastructure SME supporting multiple enterprise customers within a Managed Services (MSP) environment.
• Participate in service transitions, customer onboarding, knowledge transfer activities, and infrastructure assessments.
• Lead root cause analysis (RCA), problem management, and service improvement initiatives to reduce recurring incident

Qualifications

• Bachelor's degree in computer science, Information Technology, Engineering, or equivalent experience.
• 10+ years of hands-on experience managing enterprise Windows Infrastructure environments.
• Minimum 5 to 7 years of strong hands‑on experience with Active Directory Domain Services (AD DS), including administration, troubleshooting, Group Policy management, replication, DNS integration, and security best practices.
• Technical knowledge of:
• Windows Server 2012/2016/2019/2022/2025
• Active Directory Domain Services
• Certificate Services
• Group Policy Administration
• DNS, DHCP, DFS, DFS-R
• IIS and Certificate Services - optional
• Windows Failover Clustering
• File & Print Services
• Strong experience with VMware technologies including ESXi, vCenter, vSphere, HA, DRS, vMotion, and virtualization best practices.
• Working knowledge of Microsoft Azure services including Azure VMs, Azure Backup, Azure Site Recovery, Azure Monitor, Azure Arc, and Hybrid Identity solutions with the ability to perform day‑to‑day administration and troubleshooting activities.
• Advanced PowerShell scripting experti