Gunjan Sharma

Information Technology @Northwell Health

New York City Metropolitan Area

About

With over seven years of experience, I specialize in optimizing cloud environments and ensuring robust IT infrastructure at Northwell Health. Passionate about streamlining enterprise systems using Microsoft 365, VMware, and Intune, I focus on driving security, scalability, and operational efficiency. By aligning with Northwell's mission, I aim to empower teams with seamless, secure IT solutions that enhance collaboration and support diverse organizational needs. At Northwell Health, I lead the administration of a Microsoft 365 tenant supporting 20,000+ users, enforce advanced cloud security policies, and manage Azure AD for secure access. Collaborating with teams, I contribute to device provisioning via Intune and maintain VMware ESXi farms for high availability. My expertise in automation and governance ensures systems are resilient, accessible, and future-ready.

Experience

  • Information Technology Specialist at Northwell Health
    May 2018 - Present · 8 yrs 3 mos

    At Northwell Health, I spearheaded the administration and optimization of Microsoft 365, enhancing user experience for over 20,000 individuals. My role involved designing robust cloud security policies and managing VMware ESXi farms to ensure high availability and disaster recovery. I also automated key processes with PowerShell, significantly improving operational efficiency.

  • Information Technology at Marcum LLP
    May 2017 - May 2018 · 1 yr 1 mo

    Directed enterprise migration from Exchange 2010 to Office 365, enabling seamless adoption with minimal user disruption. Managed Active Directory, DNS, DHCP, and identity synchronization for hybrid cloud environments. Implemented cloud-based identity governance, providing uniform access and compliance across applications. Administered enterprise Exchange environments, resolving escalated messaging and authentication issues. Provided 24/7 on-call support for production environments, ensuring uptime for critical business systems. Documented IT processes and trained staff on new Office 365 and Azure features to improve adoption and reduce support calls.

  • Support Engineer at Berenberg Capital Markets
    May 2015 - May 2017 · 2 yrs 1 mo

    Oversaw Azure cloud infrastructure (VMs, VNets, storage accounts) and optimized performance through monitoring and capacity planning. Directed Active Directory domain upgrade (2008 → 2012) across 15 global sites, upgrading 46 domain controllers. Monitored and maintained VMware vCenter clusters, troubleshooting memory, CPU, and storage bottlenecks. Performed hardware lifecycle management (firmware updates, patching, BIOS upgrades). Collaborated with storage admins to allocate LUNs and ensure proper SAN storage integration. Acted as senior escalation point for complex system and infrastructure issues impacting front-office operations.

  • Information Technology Specialist at Berenberg
    May 2015 - Apr 2017 · 2 yrs

  • Information Technology Specialist at St. John's University
    May 2012 - May 2015 · 3 yrs 1 mo