Jan 2023 – Jul 2023 · 6 mos

Apr 2020 – Dec 2022 · 2 yrs 8 mos

Dec 2018 – Apr 2020 · 1 yr 4 mos · The Randstad, Netherlands

Sep 2017 – Nov 2018 · 1 yr 2 mos · Colombo

• Monitoring and managing AWS cloud based production system, to ensure the availability, performance, scalability of productions systems.
• Systems troubleshooting and problem solving across platform and application services running on Linux servers
• Experience in working on AWS Services: EC2 instance, EBS and EFS volumes, IAM, CloudWatch, CloudTrail, VPC, RDS, S3, etc,.
• Installed, Managed, and configured a datacenter with VMWare With High Availability and Distributed Resource Scheduler
• Automating system administrations using shell scripting
• Implement and manage infrastructure using tools (svn, Jenkins, Puppet, Foreman)
• Managing users and applications using Linux and windows servers.
• Managing and monitoring Docker containers using Rancher
• Managing ElasticSearch clusters, Kafka Servers, web servers (Apache and Nginx)
• Implemented Kubernetes Cluster on AWS using KOPS and Terraform
• Monitoring the infrastructure servers using Collectd, Graphite, Icinga, Zabbix, Grafana, CloudWatch, Prometheus.

Mar 2017 – Aug 2017 · 5 mos · Colombo

• Performed Private cloud administration tasks- Compute, Storage, Network
• Monitor and maintain Network infrastructure in the datacenter environment.
• Installed, Managed, and configured a datacenter with Citrix
• XenServer With High Availability and Distributed Resource Scheduler.
• We use Citrix Xencenter to script and automate builds and changes to the environment.
• Responsible for enterprise security using Firewall to protect Corporate,
• Terminals and External 3rd party connections, mainly using Cisco ASA Firewall
• with IPS & Firepower Services.
• Configuring a Dell Switch in POD –LAG, VLAN, Static and DHCP ports.
• Installing & managing a PFSense firewall for cloud gateway – Client and Server setup for routing.
• Dell storage client- Configured Iscsi shared storage with multipathing.
• Interacting with clients, understanding their needs & providing
• technical support to clients by remotely accessing their networks &
• troubleshooting the issues raised.
• Performed migrations of both Windows & Linux servers using VMWare converter and Xenconvert.
• Troubleshooting Linux OS kernel issues and performed linux administration
• Collaborated with vendors HP, Dell, and Cisco to optimize functionality.

Aug 2016 – Feb 2017 · 6 mos · Colombo

• LAN/WAN/VPN maintenance and Troubleshooting (l1 and l2 support)-coordinating with vendors
• Windows server (2008 and 2012) - Configuring and Maintaining Active Directory, DNS, DHCP, DFS,WSUS, Group policy management.
• Cyberoam Firewall- Configure DNS/DHCP/ Rules/Routing/IPS/Identity based policy creation
• Maintaining email domain- Thunderbird/ Zohomail-POP/IMAP/SMTP settings
• Linux/CentOS- Installation and Configuration, Managing users and Permissions, Network Monitoring using Nagios, Log reports using Loganalyzer.
• Provide software & Windows (7, 8, and 10) related support-Installation, maintenance and troubleshoot.
• PBX (Asterisk) and VOIP – Level 1 support/coordinating with vendor.
• Install and configure Spice works software- Inventory/Helpdesk
• Assist with maintenance of asset register (Include all infrastructure and software)
• Configure and maintain Google sheets and form based Help-desk ticketing system
• Monitor help desk for relevant assistance calls and take appropriate action
• Carry out various information security related tasks in order to ensure optimal information security (ISO/IEC 27001 Compliance) is maintained within Tellida.
• ESET Antivirus- Schedule updates and scan for clients, Analyzing threats and malicious attacks, Log reports.
• Perform routine tasks like software updates and backups- Cobian and Iperius.

May 2015 – Apr 2016 · 11 mos · London, United Kingdom

• Maintain a thorough understanding of Local area networking
• LAN/WAN/VPN maintenance and troubleshooting (Level 1 Support)
• Network design and Implementation
• Windows server 2003/2008/2012 maintenance- Installing and Configuring Active Directory, DNS, DHCP and setting GPO’s.
• Monitor helpdesk for relevant assistance calls and take appropriate action
• Maintaining network monitor tool-PRTG
• Installation and maintenance of Windows OS -xp/vista/7/8
• Installation and maintenance of new hardware maintenance (Servers, Printers, Computer workstations)
• Overseeing security of all systems, especially the internet, and installing antivirus protection.
• Smart Interactive board installation and configuration
• Verification of network backups- NAS