Experience

• 

  Cadenzait pvt ltd

  Jun 2008 - Nov 2009

  Systems administrator - windows servers
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  Access telecommunication services pvt ltd

  Nov 2009 - Feb 2012

  Systems administrator - networking

  Implemented and managed network infrastructure with Cisco products in the company.

• 

  Millenniumit

  Feb 2012 - Apr 2016

  Tier 1 - tier 3 support for the Atlassian product suite used by the internal software development teams . Hosted and fully managed the integrations between Atlassian JIRA & Atlassian Confluence while performing any necessary upgrades or fixes to the ongoing issues. Tier 1 - tier 2 support for the Atlassian JIRA used by the internal software development teams. Migrated in-house developed bug tracker tool to Atlassian JIRA.

  • Senior Systems Support Engineer

    Apr 2014 - Apr 2016

  • Systems Support Engineer

    Feb 2012 - Apr 2014
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  London stock exchange group (lseg)

  Apr 2016 - Mar 2018

  Senior application analyst

  Tier 1 - tier 3 support for the Atlassian product suite used by the internal software development teams in their CI/CD processes. Hosted and fully managed the integrations between Atlassian JIRA, Atlassian Confluence, Atlassian Bit Bucket, Atlassian Bamboo, Jenkins, and Atlassian FishEye while performing any necessary upgrades or fixes to the ongoing issues.

• 

  London stock exchange group - sri lanka

  Mar 2018 - Apr 2024

  Senior specialist - application management

  Manages operational and development aspects of an in-house hosting platform built on top of AWS. Tier 2 - tier 3 support for the Atlassian product suite used by the internal software development teams in their CI/CD processes. Hosted and fully managed the integrations between Atlassian JIRA, Atlassian Confluence, Atlassian Bit Bucket, Atlassian Bamboo, Jenkins, and Atlassian FishEye while performing any necessary upgrades or fixes to the ongoing issues. Automated system maintenance and other required BAU tasks using Python/scripting. Have strong knowledge on Atlassian JIRA DB schema and did some advanced backend automated reports based on the requirement of software development teams using PLSQL, Perl and Bash. Implement an automated tool to check the slowness of Atlassian systems. Experience in tuning/monitoring tomcat JVM and apache and resolving performance issues of JVMs. Migrated Atlassian products from on-prem hosted servers to AWS-hosted Data Center and migrated Oracle server RDS. Contributes to the development aspects of setting up a fully automated monitoring framework for Atlassian products. Troubleshooting application issues and fixing bugs. Provided infrastructure layer support for the applications hosted in AWS. Automated infrastructure provisioning using Terraform and used Ansible in configuration management tasks for different environments. Configure DataDog to monitor AWS resources. Show less

• 

  Freelance

  Sept 2018 - now

  Atlassian certified freelance expert

  • Gather requirements from the company and implemented their workflows in Atlassian JIRA and JIRA service desk cloud. Fully manage their Atlassian cloud JIRA, JIRA service desk, and Confluence instances. Apart from the software development process, implemented HR and Operations workflows including advanced automation rules. • Migrate the Atlassian JIRA server edition to Atlassian Cloud• Manages operational and development aspects of an in-house hosting platform built on top of AWS, Kubernetes, and Docker. Contributes to any automation/config management work requires for the platform, using Ansible or Terraform. Show less

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  Lseg (london stock exchange group)

  Jan 2023 - now

  Associate lead - devops engineer

  1. Automate and deploy in-house build (Trading systems) in AWS infrastructure. 2. Troubleshooting CI / CD pipeline failures3. Analysing JVM performance of applications and configuring JVM parameters to optimize performance.4. Automation / Config management required for the platform, using Ansible or Terraform.5. Providing infrastructure layer support for the applications hosted in AWS. 6. Automating the infrastructure provisioning using Terraform.Scripting with Python, Bash7. CICD integrations with Atlassian tools, Jenkins, Coverity and blackduck with AWS8. Write and configure Jenkins pipelines for CICD process with Ansible, terraform, Python, shell, etc.. Show less