Harith Chaminda

About Harith Chaminda

Senior Site Reliability / DevOps Engineer with 15+ years of experience supporting…

Experience

1. Senior Elasticsearch Engineer

   Telestream

   Apr 2022 — Present · US

   Architected and automated CI/CD pipelines using Jenkins and Terraform, reducing deployment cycles by 30% for Azure and AWS-based applications.· Managed production-ready multi-cluster Elasticsearch instances on Azure and AWS, configuring ingest-attachment plugins and pipelines for document processing and full-text search, improving query performance by 20%.· Administered Linux systems (Ubuntu, CentOS) for Kubernetes (AKS, EKS) clusters, implementing network policies, load balancing, and system optimizations to support containerized workloads.· Developed Python and Bash scripts to automate Elasticsearch ingest pipelines and file parsing with Logstash, integrating with Azure Monitor and AWS CloudWatch for real-time observability.· Implemented Infrastructure as Code (IaC) with Terraform, ARM Templates, and Bicep, streamlining network and application deployments across hybrid cloud environments.· Optimized Elasticsearch Search DSL queries and aggregations, tuning cluster performance for high-throughput workloads in financial services applications.· Configured Azure Load Balancer and AWS Application Load Balancer to ensure high availability and efficient traffic distribution for critical services.· Enhanced security by implementing Azure Security Center policies and AWS Security Groups, reducing vulnerabilities by 25%.· Led upgrades of Elasticsearch clusters from versions 6.x/7.x to 8.x, ensuring zero downtime and data integrity using Ansible and Terraform.· Provided Level 3 support for pipeline and infrastructure issues, performing root cause analysis to resolve bottlenecks and improve system reliability.· Mentored junior engineers on DevOps and Elasticsearch best practices, fostering a culture of automation and collaboration.

Education

• University of Colombo

  Bachelor of Arts - BA