Windows Administrator L3

The Windows Server Engineer (L3) is a senior technical role responsible for designing, implementing, optimizing, and supporting enterprise level Windows Server infrastructure. This engineer handles major incidents, deep troubleshooting, automation, lifecycle management, and provides guidance to L1/L2 teams. The role requires extensive expertise across Active Directory, DNS/DHCP, DFS, Group Policy, virtualization, clustering, security, and Microsoft infrastructure services.

Technical Skills

• Key Responsibilities

  • Install, configure, and manage Windows Server 2016/2019/2022 environments.

  • Perform OS hardening, patching, and lifecycle management.

  • Manage server roles such as AD DS, DNS, DHCP, Distributed File Services, IIS, Print Services, etc.

  • Design and manage Group Policies, OU structures, and access control.

  • Support ADFS, Azure AD Connect, and SSO integrations.

  • Build and support Windows Failover Clusters.

  • Manage Hyper-V, cluster shared volumes (CSV), and storage configurations.

  • Troubleshoot high availability, quorum, and cluster resource issues.

  • Administer Hyper-V and VMware vSphere environments (preferred).

  • Implement and monitor server security baselines and hardening policies.

  • Manage BitLocker, Windows Defender, firewall rules, and auditing.

  • Ensure compliance with organizational standards (SOX, HIPAA, PCI, etc.).

  • Create scripts using PowerShell for automation, reporting, and configuration tasks.

  • Tune performance for CPU, memory, disk I/O, and network bottlenecks.

  • Manage monitoring tools such as SCOM, SolarWinds, LogicMonitor, etc.

  • Serve as Level 3 escalation for critical and complex server issues.

  • Perform root cause analysis (RCA/PCA).

  • Implement preventive measures and improve processes.

  • Participate in 24x7 on call rotation as required.

  • Prepare SOPs, architecture diagrams, knowledge articles, and change documentation.

  • Mentor L1/L2 teams and provide technical leadership across projects

Required Skills & Experience:

• 8+ years of hands on experience in enterprise Windows Server environments.

• Expert knowledge of:

• Windows Server OS (2016 2022)

• Active Directory, DNS, DHCP

• Group Policy

• Failover Clustering

• PowerShell automation

• Strong understanding of:

• TCP/IP networking

• PKI / Certificates

• Storage (SAN/NAS)

• VMware and Hyper-V

• Other Requirements:

• Understanding of TCP/IP, SAN/NAS, and storage protocols.

• Windows Server Administration Certification is preferred.

• Working experience on ServiceNow.

• ITSM Best Practices.

• HealthCare industry experience is a plus.

• Knowledge of data center operations and best practices.

• A team player with a positive attitude and excellent interpersonal skills.

• Ability to understand and comply with business processes and procedures

• Ability to work in a fast-paced, dynamic environment.

• Collaboration with cross-functional teams between onshore and offshore.