Senior System Administrator L3

23 hours ago

Thāne, Maharashtra, India AMSYS IT SERVICES PRIVATE LIMITED Full time

Job Title:  System Administrator Level 3

Location:  Mumbai, Thane, India

Job Type:  Full-Time

Shift:  24x7 Operations Support

Department:  NOC, SOC, and Help Desk

Job Summary:

Position Overview

We are seeking a highly skilled  Level 3 (L3) Windows System Administrator  with strong expertise in  Microsoft 365, Azure, SharePoint, Power BI, and workflow automation . The ideal candidate will be responsible for  advanced system administration, troubleshooting, migrations, and automation  while ensuring a secure, reliable, and scalable IT infrastructure. This role requires deep technical knowledge, hands-on experience, and the ability to mentor junior team members.

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 .
Soft Skills
  • Strong communication and documentation skills.
  • Ability to work independently and as part of a global IT team.
  • Leadership qualities to mentor and guide junior staff.
  • Customer-focused mindset with a commitment to service excellence.

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