Muthukumar R

Experienced System Administrator with 11+ years of experience managing enterprise IT infrastructure, Windows server environments, Active Directory, networking, virtualization, system monitoring, backup, security, and end-user support.

Hands-on experience in Microsoft 365 administration, including user and license management, Exchange Online, Microsoft Entra ID, Microsoft 365 security, and administrative support. Proven ability to troubleshoot complex infrastructure issues, maintain high availability, implement IT standards, and support business-critical enterprise environments.

Strong background in infrastructure operations, incident management, problem resolution, system administration, and collaboration with cross-functional IT teams

Customer Support Engineer - Satrac Engineering Private Limited - Dobbaspet, Bangalore (2025-02 - 2025-08) Under the contract of Circutek, Domlur, Bengaluru - Manage, configure, and maintain Microsoft 365 services including Entra ID, Exchange Online, SharePoint Online, OneDrive, Teams and Intune.

- Account Management: Provisioning and Deprovisioning corporate and guest user accounts based on HR onboarding requests.

- Group &

• Access Administration: Creating and managing Security Groups and Microsoft 365 Groups and Assigning authorized users or groups to enterprise single sign-on (SSO) applications. Clearing blocked sign-ins and resetting Multi-Factor Authentication (MFA) registration methods - Creating and setting up standard user mailboxes, resource mailboxes (meeting rooms and equipment), and shared mailboxes.

- Creating and managing Distribution Lists, Mail-Enabled Security Groups, and Microsoft 365 Groups - Converting departed employees' mailboxes into shared mailboxes, removing licenses, and configuring automated out-of-office replies - Manage shared mailboxes, distribution lists, transport rules, and connectors.

- Identity &

• Access Management: Administer Intune, implement conditional access policies, and manage user roles, licenses, and MFA.

- Monitor and manage the daily flow of device enrollment across Windows, iOS/iPadOS, macOS, and Android platforms - Utilize remote operations via the console to wipe, retire, restart, or lock misplaced or compromised corporate assets.

- Security &

• Compliance: Apply data protection policies, implement DLP (Data Loss Prevention), manage eDiscovery, and ensure compliance with organizational standards.

- Collaboration &

• Productivity Tools: Support and optimize Microsoft Teams, SharePoint sites, and OneDrive for Business to enhance collaboration.

- Site Provisioning and Handling Permissions: Creates and configures new SharePoint sites, communication portals, and modern team sites using standard Out-of-the-Box (OOBE) templates. Assigns, modifies, and revokes access to SharePoint sites, document libraries, and lists.

Business. Nagercoil.

Dec-2023 to Jan-2025

s Managing and Maintaining the Customers Desktops, Laptops, Servers, Routers and Switches.

s Configuring, Managing and Maintaining Networking Equipment’s.

s Installed and configured DHCP Client/Server s Maintaining Customers Active directory likes Create, change and delete user accounts per request and giving share & security level permissions s Created, managed and monitored group policy assignments to Domain wide OU’s s Backup Management, Reporting and Recovery s Virus Protection and Eradication s Configuring, Installing & Maintaining the Wi-Fi devices.

s Configuring and troubleshooting Microsoft Outlook and Outlook express.

s Responsible to install, setup, maintain network and also configure the peripherals, cabling and equipments accordingly as per the requirement.

s Expertise hands in troubleshooting of Computer hardware related problems such like Motherboard, UPS, SMPS, Printer and Drivers s Documentation of all the work done using Excel and MS word.

s Preparing monthly work status report and updating technology specific document

JPH Solutions. Ambattur, Chennai.

System Admin, Nov 2016 to Nov 2022.

s Administer and maintain enterprise Windows infrastructure, ensuring availability, performance, and reliability of business-critical systems.

s Manage Active Directory, including user accounts, security groups, organizational units, computer objects, and Group Policy.

s Perform Windows Server administration, configuration, troubleshooting, patching, and maintenance.

s Monitor server and infrastructure health and proactively identify and resolve performance and availability issues.

s Troubleshoot issues related to DNS, DHCP, authentication, network connectivity, file services, and Windows services.

s Support Hyper-V virtualization environments.

s Perform server provisioning, decommissioning, configuration changes, and system upgrades according to organizational standards.

s Manage and troubleshoot backup jobs and participate in backup and disaster recovery activities.

s Administer Microsoft 365 users, licenses, groups, and services.

s Manage user accounts and identities through Microsoft Entra ID (Azure AD).

s Create, modify, and manage Exchange Online mailboxes, shared mailboxes, distribution lists, and email-related configurations.

s Troubleshoot Microsoft 365 authentication, Outlook, email delivery, Teams, and user access issues.

s Assist with MFA and authentication-related administration and troubleshooting.

s Support Microsoft Teams users, teams, groups, and collaboration-related issues.

s Assisted with Microsoft Intune device enrollment and management for corporate Windows devices.

s Created and assigned Intune configuration profiles and compliance policies based on organizational requirements and Assisted with software deployment and troubleshooting of applications through Microsoft Intune.

s Supported users with Microsoft OneDrive synchronization, file access, sharing, and login issues.

s Create sharepoint sites and assisted users with SharePoint site and document library access, permissions, and file-sharing issues.

System Administrator - TGI Packaging Pvt Ltd - Sriperumbudur, Chennai (2014-08 - 2016-10) - Installation of application software & troubleshooting Hardware issues.

- Configuration of Email clients MS Outlook, Thunderd Bird.

- Troubleshooting printer connectivity issues.

- Installing and configuring client VPN.

- Monitored the daily requests from the user and worked in accordance to the same.

- Kept in constant touch with vendors to resolve problems as quickly and efficiently as possible.

- In-depth knowledge of branded and non-branded PCs, laser printers, laptops, and peripherals and bar-code scanners.

- Assisted in hardware installation and maintenance of servers, networking equipment, and other supporting hardware.

- Configuring, Managing Router, switch and maintaining Firewall - Managing and configuring Wi-Fi Devices.

- Configuring & troubleshooting of LAN setup - Remotely assist and manage servers and services.

- Administration for Finsys ERP Software.

System

Administrator - SURIYA INFOTECH - Nagercoil (2011-08 - 2014-08) - Managing and Maintaining the Servers, PC's, Routers and Switches.

- Configuring, Managing and Maintaining Networking Equipment's.

- Installed and configured DHCP Client/Server - Created, managed and monitored group policy assignments to Domain wide OU's.

- Maintaining Active directory likes Create, change and delete user accounts per request and giving share & security level permissions.

- Configuring, Installing & Maintaining the Wi-Fi devices.

- Responsible to install, setup, maintain network and also configure the peripherals, cabling and equipments accordingly as per the requirement.

- Documentation of all the work done using Excel and MS word.

- Preparing monthly work status report and updating technology specific documents

BE - E.C.E - ST.Xaviers Catholic College of Engg (2011-04)

Diploma - ECE - K.N.S.K Polytechnic College (2008-05)

Higher Secondary Education - Govt. (HSC) (2006-03)

Secondary School Leaving Certificate - SSLC - Govt.(HSC) (2004-04)