RANJITH KASINATHAN

DC Infrastructure & Cloud Build:

· Built new private clouds in APAC (Singapore, India, Japan, China and Korea) from scratch.

Datacenter Facility:

· DC Facility selection, contract negotiation etc.

· Datacenter cooling and PUE calculation as per local country standardized.

· Cabling management (cross-connect, FC, CAT 6A, MUX connectivity).

Design:

· DC Rack Design, Hardware procurement & Installation, Cabling matrix.

Architect:

· Architect the Compute using VMWare technologies, storage design using HPE Primera Technologies.

· Prepared high-level and low-level design (HLD & LLD) documents.

Datacenter Build:

· Build private cloud infrastructure using VMWare technologies.

· Expertise in ESXi, vSAN, VCF, NSX-T, and datacenter operations.

· Deep knowledge of converged, hyperconverged Infrastructure, HPE synergy 12000 and DL380 servers.

· Provide technical guidance to the teams and clients on installation, setup and configuration of systems.

· Hands-on experience with HPE Blade servers, including Profile creation, LACP configuration and JBOD creation.

· Commissioned ESXi hosts using SDDC Manager and added them into Workload Domain clusters.

· Performed hardening for ESXi hosts to align with environment security standards.

· Hands-on experience Systems Center Suite, VMware vRealize Suite, VCF, and NSX-T.

· Managed vCenter, ESXi, vSAN, NSX upgrades, and patching.

· Created new clusters under Workload Domains using SDDC Manager.

· Configured NSX-T DFW tags, service groups, and server groups.

· Implemented DFW rules for Load Balancer VIPs and backend pool members.

· Created datastores and datastore clusters.

· Troubleshot ESXi host connectivity issues and storage-related problems.

· Monitored alerts via vROPS and generated performance reports.

· Configured, maintained, and installed virtual server environments, including VMware ESXi and Microsoft Hyper-V.

· Maintained and troubleshot high-availability and disaster recovery (DR) solutions, including clustering, database mirroring, log shipping, hot standby servers, failover, and DR testing.

· Performed root cause analysis (RCA) for failures and conducted log reviews for troubleshooting errors.

· Conducted proactive server maintenance, including Windows/Linux patching (both upgrades and security patches) and backup/recovery management.

· Collaborated with cross-functional teams in designing and executing successful cloud projects.

· Enhanced cloud infrastructure efficiency by designing and implementing scalable solutions.

· Increased system reliability through proactive monitoring and troubleshooting of cloud environments.

· Designed disaster recovery plans to ensure minimal downtime in case of system failures or security breaches.

· Experience working in Windows environments (2003, 2008, 2012, 2016, 2019, 2022) and ESXi (7.0.x, 8.0.x).

· Interfaced with customers, stakeholders, and end-users to discuss capability architectures, requirements, use cases, and technical specifications.

· Troubleshot end-user incidents, scheduled system changes, and identified permanent solutions.

· Stayed updated with industry trends, advancements in virtualization technologies, and regulatory requirements impacting IT infrastructure.

· Optimized VMware configurations and settings to enhance system performance.

· Improved datacenter efficiency through comprehensive virtualization solutions using VMware technologies.

· Facilitated a smooth migration of physical servers to a virtualized environment, minimizing disruptions.

· Optimized storage utilization by configuring and managing vSAN technology in virtual environments.

· Delivered Tier 2 and Tier 3 support for problem identification, diagnosis, and issue resolution.

· Monitored networks and network devices to resolve technical problems quickly.

· Analyzed complex project server issues and worked on large enterprise and business-critical applications.

Datacenter Operations:

· Conducted annual Disaster Recovery (DR) exercises for Singapore datacenters.

· Conducted annual security audits and implemented necessary remediations.

· Collaborated with datacenter facility vendors for monthly maintenance, access control, hands & feet (H&F) support, and invoice management.

· Managed vendor and supplier relationships.

· Prepared audit documentation.

· Maintained servers and managed four datacenters (MBFC, CBP, SG1 & SG2 Equinix).

· Provided 24x7 on-call support on a rotating basis.

· Monitored and managed all installed systems and infrastructure, including adding, deleting, and decommissioning systems.

· Strong technical expertise in Windows operating systems (2008, 2012, 2016 & 2019), VMware, SSH, RDP, IIS, and hardware technologies.

· Expertise in Microsoft Cluster and DFS technologies.

· Administered global Active Directory infrastructure.

· Knowledgeable in server hardening to ensure system security.

· Managed Symantec NetBackup 8.3 (Veritas) and endpoint protection.

· Planned and executed OS patching and migration activities independently.

· Experience in troubleshooting and performance tuning for Windows and VMware 6.5.

· Established configuration standards and design guidelines for Windows and system software, covering availability, performance, resilience, monitoring, backup, and recovery.

· Developed and maintained the technical disaster recovery (DR) plan and conducted DR drills and Business Continuity Planning (BCP) exercises.

· Responsible for documenting incident RCA reports, system configurations, and performance tuning activities.

· Performed planned changes on a regular basis, especially during weekends.

· Collaborated with business and application teams to resolve incidents and implement long-term solutions.

· Worked with engineering teams to implement the latest solutions for maintaining infrastructure stability.

· Conducted system planning, change management tasks, and proactive IT system monitoring, recommending enhancements and upgrades as needed.

· Maintained inventory lists, system documentation, and system topology records.

· Managed and executed system/application installations, patching, rollouts, releases, and upgrades.

· Ensured the integrity and stability of the existing IT infrastructure.

· Facilitated meetings with technical teams and third-party vendors.

· Knowledgeable in IT service management (ITSM) based on ITIL best practices.

· Monitored and optimized system performance, collected performance data, and conducted capacity planning to address infrastructure scaling needs.

· Improved system stability by performing regular audits, applying security patches, and addressing vulnerabilities promptly.

· Implemented virtualization technologies to consolidate resources, reduce costs, and improve overall system efficiency.

· Completed software updates and assessed security patches to ensure optimized system performance.

· Ensure the implementation of agreed architecture and infrastructure; identify company needs to define system specifications.

· Manage and monitor all installed systems and infrastructure.

· Install, configure, test, and maintain operating systems, application software, and system management tools.

· Ensure system compliance with all established information security policies.

· Responsible for all system infra-related devices, including appliances, vulnerability reviews, and assessments.

· Design, implement, and administer VMware ESX/ESXi servers and VMware vCenter.

· Design, implement, and manage data center technology components and testing efforts.

· Participate in the project implementation of IT network and infrastructure for the supported region/business units.

· Manage HA/FT/DRS, Alarms, Virtual Switches, vMotion, Patches, Snapshots, Resource Pools, Clusters, Tools Upgrade, Disk Expansions, Cloning VMs, and troubleshooting ESX/ESXi issues.

· Create Alarms, find root causes of issues, and perform system log analysis and reporting. Troubleshoot servers like WEB, APP, and DB.

· Configure Windows 2008, 2012R2, 2016, and 2019, disk RAID, NIC teaming, Terminal Services, Backup & Restore.

· Monitor the health and availability of the infrastructure, attend to faults, and troubleshoot hardware and software technical problems.

· Monitor VMs & ESXi Servers (CPU, Memory, Disk, and Network Utilization) using SCOM and Veeam solutions.

· Collect and troubleshoot PSODs and provide solutions by directly contacting VMware.

· Install and maintain infrastructure components such as Servers/VMs, storage, backup, firewalls, load balancers, proxy servers, etc.

· Install/Configure/Upgrade infrastructure devices and applications and harden OS/install security patches.

· Manage and maintain HP & Dell servers and HP & Dell blades.

· Led troubleshooting efforts during high-profile incidents, effectively resolving complex issues within minimal downtime.

· Established monitoring procedures to track system performance metrics and identify areas requiring urgent optimization or improvement.

· Provide day-to-day operational maintenance, support, and upgrades for operating systems and servers.

· Schedule installations, upgrades, and maintenance in accordance with established IT policies and procedures.

· Ensure data/media recoverability by developing and implementing a schedule of system backups and database archive operations.

· Conduct hardware and software audits of workstations and servers to ensure compliance with established standards, policies, and configuration guidelines.

· Maintain, upgrade, and implement improvements to the VMware ESXi infrastructure.

· Maintain vCenter Orchestrator automated workflows; work with team members to support their development and operation.

· Ensure all backups are completed successfully within the required backup window.

· Responsible for the daily operations of the Enterprise Data Center backup infrastructure environment.

· Review daily reports on the status of backup jobs and provide management with dashboards to give visibility into the overall operation and performance of the backup environment.

· Manage NetBackup master, media, and OpsCenter servers with backup, restore, upgrades, and daily backup and restore job troubleshooting.

· Ensure all systems meet Business Continuity Planning measures.

· Perform service requests, resolve incidents, and implement changes.

· Led desktop deployment for field offices and corporate locations, providing support for Windows XP, 7, MS Office 2010, and other desktop software.

· Managed large-scale Microsoft Active Directory and Exchange migration projects, including Exchange/Outlook 2010 implementation.

· Administered and maintained high-availability Windows 2000/2003 servers, including patch management, security policies, GPOs, and backup/recovery.

· Operated a network with Microsoft Server 2003, Active Directory, VPN IIS, Exchange 2003/2007, and supported desktop platforms (XP, Vista, 7).

· Configured and deployed BlackBerry devices using BlackBerry Enterprise Server (BES) and maintained server and CAL licenses.

· Managed backup procedures with ArcServe Backup Exec and configured backup servers for Exchange 2007 and file servers.

· Administered VMware Server and created/managed user accounts and permissions via Windows Server 2003 Administration Tools (DNS/DHCP/ADUC).

· Implemented and maintained Active Directory Services, including replication, trust relationships, and domain-wide Group Policies.

· Managed DNS, DHCP, and WINS Servers, and maintained workstations in a routed TCP/IP environment.

· Performed regular server monitoring and capacity planning (Windows NT, 2K, 2K3, 2K8) using server monitoring tools.

· Managed patching and updates through Windows Software Update Services (WSUS).

· Administered high-end rack servers (Dell, HP, IBM) and configured RAID setups (RAID 0, RAID 1, RAID 5).

· Administered and maintained Lotus Notes (Domino Server 7.0.2) and implemented backup solutions (Symantec Backup, VERITAS, NetBackup).

· Configured, maintained, and troubleshot FortiGate Firewall, Cisco VPN, and Cisco VOIP phones.

· Led troubleshooting, repairs, and installations of computers, data communications, and network systems.

· Implemented Acronis Image Enterprise Server for backup and restoration, and managed a Windows-based network of 500+ workstations.

· Provided 24/7 on-call support, managed BlackBerry setups for Lotus Notes, and facilitated Citrix access for VVIP users.

· Rebuilding Windows 7 & Vista SP2 OS, setting up new laptops and LCD monitors.

· Coordinating with OEM vendors to schedule appointments for laptop repairs.

· Troubleshooting software such as Outlook 2007, VPN (MSIT VPN), Office 2007 upgrades, BitLocker, wireless connectivity, network printers, and IE7.

· Providing 1st and 2nd level support to end-users in troubleshooting and resolving desktop PC problems (hardware, software, and applications) and related peripherals (printers, scanners, PDAs, etc.).

· Worked as Network and IT Systems support engineer, supported the office IT systems.

Worked as Network support engineer, managed the LAN / WAN office network operations and support.