Windows System Administrator L3

15 hours ago

Navi Mumbai, India Amsys It Services Full time

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.

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