Yuvaraj Srinivasan

System Administrator

Talent

Chennai, Chennai districtMember since January 9, 2026

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About

IT professional with 12+ years of experience in IT support, system administration, and cloud environments. Expertise in Active Directory, Azure AD (Entra), Microsoft 365, and Security & Compliance. Hands-on experience in incident management, Microsoft Defender, and SIEM monitoring, with a proven track record of meeting SLA targets and supporting secure, reliable IT operations.

Experience

IT Systems Architect - 247Hire India Pvt Ltd, Hyderabad Jul 2016 – Present

Client: System Administrator – American Society for Quality (ASQ), USA Apr 2022 – Present

Active Directory & Identity Management

Manage stakeholder onboarding and offboarding, including OU structure, group memberships, permissions, and full account lifecycle.
Lock/unlock AD user accounts, update AD attributes, maintain group policies, and support VPN access for end users.

Cyber Security & SOC Operations

Analyze security logs using Wazuh SIEM, AD Manager and Audit Plus to identify threats and anomalies.
Review CVE risks and coordinate with the team for patch deployment and vulnerability mitigation.
Monitor and analyze policy alerts from Microsoft Defender and Cloud App Security.
Analyze quarantined emails using Zix, purge phishing emails, and manage domain blocklists/whitelists.
Investigate and verify security incidents, document findings, prepare detailed reports, and provide resolutions to strengthen organizational security posture.
Conduct monthly phishing simulation campaigns, evaluate user response metrics, and support security awareness training.

Microsoft 365 Administration

Administer Exchange Online, OneDrive, Teams, and SharePoint Online.
Create and manage user mailboxes, shared mailboxes, distribution lists, and access permissions.
Configure and manage mail flow rules, anti-spam policies, and email security controls.
Manage Microsoft 365 user accounts, licenses, and storage to ensure compliance and cost efficiency.
Create, modify, and manage SharePoint sites, libraries, and permissions based on project requirements.
Support B2B guest access and enable secure collaboration across SharePoint

Infrastructure Monitoring

Monitor servers, applications, and network devices using PRTG and Wazuh to ensure availability.
Monitor Microsoft 365 Service Health and review alerts proactively to prevent service disruptions.
Monitor and respond to security alerts from Cisco Meraki, Veeam Cloud, and SentinelOne.

IT Support Expertise

Provide user and desktop support, ensuring timely resolution of end-user issues with stakeholders.
Apply ITIL-based incident, change, and service request management practices to meet SLA targets.
Actively contributes to IT projects, improving operational efficiency and system reliability.
Document patching and monitoring procedures to support audits and compliance requirements.

Automation & PowerShell

Automates bulk user account creation, management, and reporting in AD and M365 using PowerShell.
Generated custom reports on users, groups, licenses, and mailbox status using PowerShell scripts.
Automating routine administrative tasks to improve operational efficiency.

Earlier Responsibilities (247Hire India Pvt Ltd – Internal)

IT Support & Infrastructure

Provided Level 2 IT support for 800+ users, ensuring SLA compliance and rapid issue resolution.
Managed Active Directory, DNS, DHCP, Group Policies, file permissions, and access controls.
Delivered 24/7 on-call support, including after-hours and weekend emergencies.

System & Network Administration

Monitored and maintained servers, backups, VPNs, firewalls, VoIP SIP accounts, and network devices.
Managed virtualization platforms Hyper-V and Citrix XenServer.
Coordinated patching and endpoint updates using Endpoint Central.

Security & Compliance