Senior system administrator-level 3

Role & responsibilities

Design, install, configure, implement, and maintain Windows servers across multiple sites.

Design, install, configure, implement, and maintain Azure Virtual Desktop AVD cloud service

Managing Microsoft Exchange on‑premises, M365 and MS Intune.

Understanding backups, recovery, and system upgrades.

Working on Windows Server 2016 to 2022 roles and features.

Understanding RDS CAL service.

Administration of VMware ESXi infrastructure, including setting up, configuring, and troubleshooting.

Manage Azure cloud resources and services, ensuring cost‑effectiveness, security, and scalability.

Implement and manage Azure Virtual Desktop and Horizon VDI components.

Working knowledge of hyperconverged infrastructure HCI such as Nutanix, Vx Rail, Azure Stack, etc.

Manage and maintain the Active Directory Domain Controller, including users, groups, OUs, and permissions.

Manage and maintain all Windows Server services such as DNS, DHCP, WSUS, FTP, SFTP, WDS.

Design, implement, and troubleshoot Group Policies to enforce company security and operational standards.

Handle tasks using tools like AD Manager, AD Audit, AD Sync, etc.

Perform AD and all related services health checks.

Understand, implement, and manage the Certificate Authority infrastructure.

Maintain and administer MFA (Multi‑Factor Authentication) to bolster system and data security.

Have a general understanding of networking core concepts and actively participate in general issues.

Regularly monitor system logs and alerts to maintain system health and security.

Maintain availability of PAM (Privileged Access Management) and understanding of its core components.

Work on vulnerability remediation for Windows Server OS, services, Nutanix, VMware, etc.

Who you are

10+ years prior experience in an IT support position.

Strong working knowledge of Power Shell scripting or any automation tools and scripts.

Understanding core concepts of cloud services like O365, MS Teams, Azure AD, Share Point.

Excellent knowledge of server administration, patch management & OS‑specific debugging tools.

Good understanding of monitoring systems such as PRTG, SCOM, Solar Winds.

Provide technical hands‑on support at a L3 level for incident and request management, including resolution of escalated incidents, problems or changes from L1 support.

Responsible for problem management and root cause analysis for repeated incidents or outages.

Ability to work and collaborate in a team environment.

Good understanding of ITIL processes and tools such as Service Now, BMC Remedy, SCSM, Manage Engine, etc.

Responsible for providing support on‑call, out of office hours, including emergencies and routine maintenance windows.

Provide technical support, guidance, and expertise to junior staff members.

Collaborate with other departments and vendors for system integration and upgrades.

Document procedures, configurations, and instructional guides for the team.

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