Charitha Buddhika

Experience

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  Southern DJs Sri Lanka

  Jan 2006 - Jan 2014

  Disk Jockey

  Southern DJs Sri LankaA - Z event solutions is the brief explanation of services and ConceptsRental of AV equipmentCoordinating eventsCorporate eventsAny genre of musicOn MixCloud - https://www.mixcloud.com/wgcharithabuddhika/

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  Lanka Communication Services (Pvt) Ltd

  Jan 2012 - Sept 2015

  Engineer

  Best practice in Apache, Nginx, IIS based Web Server installation, VSFTPD, MySQL configuration, Replication and web hosting related issues troubleshooting (shared, Dedicated). Best practice in Cpanel, Plesk panel web based graphical control panel installation, hosting account, database creation, DNS zone management and related issues troubleshooting and fixing. High available globally distributed web hosting infrastructure management for Wijeya News Papers Ltd (OVH Cloud + VMware + Amazon Web services) dailymirror.lk, ada.lk, mirrorsports.lk, ft.lk, kelimandala.lk etc..High available globally distributed web hosting infrastructure management for Adaderana 24x7 News Portal (OVH Cloud + Amazon Web services) adaderana.lk, adaderana.mobiLake House Newspapers and Upali newspapers web hosting management for dailynews.lk, dinamina.lk, thinakaran.lk, divaina.comLankacom Datacenter Physical servers P2V migration and VMware vSphere virtualization infrastructure management. Best Practice in Cloud computing on Citrix CloudPlatform, cloudstack, openstack together with Type 1 hyper-visors. Hyper-v virtualization management and fail over clustering. Best practice in VOD/Live Streaming with WOWZA Streaming Engine and Nimble Streamer for WMSPanel and knowledge in encoding software and devices. Best practice in MS SQL 2000, 2008, 2012 Database management, fail over clustering and replication. Microsoft Windows Server 2003 Domain controller migration to MS Windows server 2012 and administration, maintenance. Implementation, Configuration and Management of Microsoft SCCM 2012 R2 deployments in a corporate environment of 150+ users; and administration for OS installation, client/agent installation, software distribution, hardware/software reporting services and remote session based access support. SAN, NAS configuration, implementation and maintenance.Kaspersky / Symantec management server administration. Show less

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  N-Able Private Limited

  Oct 2015 - Jan 2017

  Systems Engineer

  Revenue Administration Management Information System (RAMIS) - Inland Revenue Department (IRD), Sri LankaExperienced with configuring, maintaining, and troubleshooting on VMware vSphere virtualized infrastructure (VMware vCenter 5.5, ESXi 5.5, Cisco Nexus 1000v vDS Cluster, vSphere Update Manager, HA, DRS, SAN Multi-Pathing, Raw Disk Mapping).Configuring, maintaining and troubleshooting Cisco UCS Hardware with Cisco UCS Manager and experienced with configuring Cisco 5108 Blade Chassis with B-series hardware, UCS clustering with Cisco 6248 Fabric Interconnects, Pools, Templates and Service Profile management for updates and setting up cisco c-series hardware.Storage, Remote Replication and Disaster Recovery systems configuration, maintenance and troubleshooting for EMC VNX 5400 SAN (DC and DR), Fabric zoning with Cisco MDS 9148 SAN Switches, EMC Recover Point Clustering for redundant array replication and integration with VMware Site Recovery Manager.Performed Backup and Recovery tasks for the Application VMs and Databases with configuring EMC Networker 8.1 and IBM TS3310 Tape Library.Microsoft windows server 2012 failover cluster configuration, maintenance and 12 No of MS SQL 2014 Active-Passive Production/UAT database clusters management.Sophos Endpoint Antivirus Management server maintenance with 630 client computers with controlling removable, optical, device access configuring GPOs, virus/spyware cleaning and updating, scanning.Nagios core implementation with configuring all devices for monitoring (DC & DR) Site and SMS Email notification configuration using postfix on Ubuntu server.Understandable knowledge with F5 Load Balancer, Bluecoat Proxy SG/AV, Checkpoint and Cisco ASA.Review and support in preparing policies, procedures, and documents in relation to the project.Ensured that the goals of the Incident Management process are achieved, restoring normal service as soon as possible based on customer perspective and within defined SLA. Show less

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  Pearson Lanka

  Jan 2017 - Sept 2023

  Involved Projects & Other Contributions:• Consolidation of London on-prem datacenters in to a Nutanix HCI solution on Cyxtera MultiCloud Platform and actively worked on initial POC workflows, performance tests, NC2 on AWS DR setup initialization and seamleass migration of 2500+ virtual workloads. • Performed various component upgrades (Prism Central, AOS, foundation, NCC, BIOS, firmware, Object manager, AHV) on clusters running on UK1 Nutanix hyper-converged infrastructure to maintain compatibility across products and to resolve impacted bugs. • Implementation of Boston DELL VxRail Clusters and migration of virtual workloads from legacy UCS environment. Performed periodic VxRail component upgrades and resolved any issues. • Performed vSphere upgrades in Pearson global data centers adhering to global standards by upgrading virtualization environments from vSphere 5.5 to 6.5 and 6.5 to 6.7 and 6.7 to 7.0 along with its hardware infrastructure without creating any major incidents or impact to the production environments.• Building MS SQL clusters for production applications. Performing tasks like Creating ESXI clusters Zoning and masking storage LUNs through RDM and adding them to the VMs as respective manner.• Disaster recovery solution for EMEA region (more than 400+ VMs) datacenters which is implemented using VMware site recovery manager and EMC storage level replication.• Datastore clusters segregation based on the storage tiers to handle VM workloads in an efficient way and to maintain vsphere max limits on Iowa City vCenter. • Actively contributed to various critical Physical servers and VM migration activities using P2V VMware vCenter Converter, OVF exports, vSphere Replication and Veeam Replication.• VMware Log Insight, VMware Skyline and Turbonomic, monitoring appliances periodic upgrades and vulnerability patching.• VMware Tools & VM Hardware version upgrade to enhance the VM performance & mitigate VM compatibility issues across the environments. Show less Duties and Responsibilities:• Ownership of management, administration and maintenance of all on-premises and cloud infrastructure environments owned by Pearson which consisted of 600+ hosts and 13000+ virtual machines.• Remote management and maintenance of - 20+ Cisco UCS Fabric Interconnects (6296, 6248, 6140, 6120) from Cisco UCS Manager along with 500+ CISCO B series blade servers (B230-BASE-M2, B200-M4, B440-BASE-M2, B420-M3)- DELL PowerEdge (R810, 720, 630) Standalone servers BIOS, Firmware updates and ESXi installations.- DELL PowerEdge M630 System on VRTX Enclosure. - DELL EMC VxRail HCI Infrastructure (DELL P570F, E560F).- Nutanix HCI Infrastructure (Fujitsu Primergy RX2530-M6, RX2540-M6 and XF8055-M3).• Plan, coordinate and work with VMware/DELL EMC support engineers in performing VxRail cluster component upgrades including VxRail Manager, ESXi, BIOS, Firmware and iDRAC to improve security and optimize the system performance. • Analyze the system logs using vRealize Log Insight, vCenter, and ESXi to troubleshoot issues and optimize the environment efficiency.• Provide support to troubleshoot and resolve issues on various infrastructure components including ESXi issues, vCenter issues, VM level issues, Operating system-level issues, and hardware problems during business-critical incidents. • Managing and performing tasks related to EMC and NetApp storages (VMAX, Unity, VNX, FAS and E series) and storage level 1 support. • Performed complete operational maintenance of the virtualization environments owned by Pearson which including routine version upgrades (patching) and firmware upgrades.• Attend Change Advisory Board (CAB) meetings for approvals and planned the necessary changes by adhering to ITIL best practices. • Review and support users with capacity and provisioning requests, analyzing past utilization data and requirement demands ensuring optimal resource consumption across environments using the tools vRealize operation, Turbonomic. Show less

  • Senior Systems Engineer

    Oct 2019 - Sept 2023

  • Systems Engineer

    Jan 2017 - Oct 2019
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  Upwork

  Jun 2018 - Feb 2024

  Senior Systems Engineer (Cloud & Web Hosting Infrastructure)
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  Gapstars

  Nov 2023 - now

  Senior Windows System Administrator at CLDIN NL