Yuvaraj Srinivasan

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.

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

• Implemented antivirus solutions (K7) and ensured endpoint security compliance.
• Assisted in documenting technical controls for ISO 27001 audits.
• Worked closely with vendors and negotiated SLAs.

System Engineer

T&M Service Consulting Pvt Ltd – Mumbai                                                                                    Nov 2013 – Jun 2016
Client: Larsen & Toubro Ltd

• Installed and supported 400+ Windows nodes across multiple locations.
• Administered Windows Server 2008 R2, TMG, file servers, and Symantec servers.
• Configured FortiGate firewalls, Netgear routers, and LAN infrastructure.
• Implemented Group Policies and conducted system audits.
• Provided hardware, network, Outlook, Lync, and ERP application support.
• Maintained IT audit documentation and analyzed system logs.

Researcher

BoardEx India Pvt Ltd – Chennai                                                                                                       Sep 2012 – Nov 2013

• Conducted research on high-profile individuals using public data sources.
• Maintained and updated backend databases with accurate information.
• Analyzed data and generated structured reports for global clients.

EDUCATION

Bachelor of Engineering (Computer Science) – First Class                                                                           2007 – 2011