Windows System Administrator L3

Key Responsibilities

Windows & Infrastructure Administration

• Manage, configure, and troubleshoot

  Windows Server environments

  (AD, DNS, DHCP, Group Policy, File/Print services).
• Maintain

  virtualized environments

  (Hyper-V, VMware, or Azure Virtual Desktop).
• Perform patch management, upgrades, and system performance optimization.
• Implement backup, disaster recovery, and high-availability strategies.

Microsoft 365 & Azure Administration

• Administer

  O365 tenant services

  including

  Exchange Online, Teams, OneDrive, and SharePoint Online

  .
• Manage

  Azure AD, Conditional Access Policies, Security & Compliance Center

  .
• Configure and maintain

  Intune MDM/MAM

  for endpoint security and compliance.
• Support

  hybrid environments

  (on-premises AD + Azure AD Connect).

SharePoint & Power Platform

• Administer and support

  SharePoint Online/On-Prem

  , including

  site collections, permissions, and workflows

  .
• Design, implement, and maintain

  Power Automate (Flow) solutions

  for business process automation.
• Develop

  Power BI dashboards and reports

  integrating data from multiple sources.
• Collaborate with business stakeholders to optimize collaboration and reporting platforms.

Migration Projects

• Lead and execute

  migrations to O365, SharePoint Online, and Azure

  .
• Perform

  email and data migrations

  (Exchange, PST, file shares, SharePoint, legacy systems).
• Ensure minimal downtime and data integrity during migration processes.

Security & Compliance

• Implement

  identity and access management (IAM)

  best practices.
• Monitor and respond to

  security alerts and incidents

  across O365/Azure.
• Ensure compliance with regulatory standards (ISO, SOC2, HIPAA, etc.).

Support & Mentorship

• Provide

  L3 support

  for escalated incidents and problem management.
• Create documentation, SOPs, and runbooks for IT operations.
• Mentor and guide

  L1/L2 engineers

  in troubleshooting and best practices.

Required Skills & Experience

• 7+ years of experience in

  Windows Server administration

  .
• 5+ years of hands-on experience with

  Microsoft 365 & Azure Administration

  .
• Strong knowledge of

  Active Directory, Group Policy, DNS, DHCP

  .
• Expertise in

  SharePoint Online/On-Prem

  ,

  Power BI

  , and

  Power Automate

  .
• Proven track record in

  O365 / Exchange Online migrations

  and

  SharePoint migrations

  .
• Experience with

  Intune, Endpoint Manager, and security tools

  .
• Solid understanding of

  networking fundamentals (TCP/IP, VPN, firewalls, load balancers)

  .
• Strong scripting skills in

  PowerShell

  for automation and administration.
• Excellent troubleshooting, analytical, and problem-solving abilities.

Preferred Qualifications

• Microsoft certifications (MCSE, MS-100, MS-101, AZ-104, AZ-305, etc.).
• Experience with

  hybrid cloud environments

  .
• Familiarity with

  third-party migration tools (Quest, BitTitan, ShareGate, etc.)

  .
• Knowledge of

  SIEM, SOC monitoring, and advanced security tools

  .