Windows Administrator L3

Title
- Windows Administrator L3

Location- USA (Remote)

Type
- Fulltime

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, Client, Group Policy, virtualization, clustering, security, and Microsoft infrastructure services

• 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 Bit Locker, Windows Defender, firewall rules, and auditing.
  • Ensure compliance with organizational standards (SOX, HIPAA, PCI, etc.).
  • Create scripts using Power Shell for automation, reporting, and configuration tasks.
  • Tune performance for CPU, memory, disk I/O, and network bottlenecks.
  • Manage monitoring tools such as SCOM, Solar Winds, Logic Monitor, 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.

• 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
• Power Shell 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 Service Now.
• ITSM Best Practices.
• Health Care 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.

Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.