Samabrita Kundu

About Samabrita Kundu

Microsoft 365 & Windows Engineer with 5+ years of experience in Exchange Online, Exchange Hybrid, Entra ID (Azure AD), Intune, and Windows Server environments. Skilled in email security (Proofpoint, Tessian), identity & access management (MFA, Conditional Access), and endpoint security. Experienced in mail flow management, P2V environments, automation using PowerShell, and cloud/on-prem infrastructure support. Strong background in phishing/BEC investigation, vulnerability remediation, and performance monitoring (Grafana). Proficient in SharePoint Online, OneDrive administration, and enterprise IT operations. Certified in Microsoft Azure Fundamentals (AZ-900) and Microsoft 365 Fundamentals, with a focus on security, automation, and system optimization.

Experience

1. Windows and M365 Engineer

   Persistent Systems

   Nov 2024 — Present

   Currently supporting a US-based cybersecurity project with Proofpoint, delivering technical support and operational management for enterprise email security and Microsoft 365 environments. Responsible for troubleshooting, system administration, and ensuring secure email communication across multiple customer tenants.Manage and track technical issues using enterprise ticketing platforms including Salesforce, Zendesk, and Jira for efficient incident resolution and support operations.Perform Linux system navigation and command-line operations for troubleshooting, log analysis, and operational tasks.Implement and support email security protocols, helping protect organizations from phishing, data leaks, and identity-based threats.Hands-on experience with Tessian integrated with Microsoft 365 and Microsoft Exchange Online, including monitoring and managing quarantine emails.Support server patch management and update processes to maintain system stability and security compliance.Troubleshoot and resolve critical issues related to Outlook on the Web and the New Outlook experience.Configure, deploy, and support Microsoft 365 Add-ins and Outlook Add-ins to enhance user productivity and application functionality.Diagnose and resolve a wide range of Outlook client issues, ensuring seamless email communication and user experience.Manage multiple Microsoft 365 customer tenants, including administration, email quarantine management, and end-user support.

Education

• Loreto Day School Bowbazar

  Secondary

• University of Engineering & Management (UEM)

  Bachelor of Technology - BTech, Computer Science

• St Johns Diocesan girls higher secondary school

  Higher Secondary, Science