• Managed and upgraded production-scale Kubernetes clusters on AWS EKS, supporting more than 400 microservices for the bank.• Oversaw upgrades for Kubernetes add-ons including Core DNS, Kube Proxy, EBS CSI driver, CNI plugin, and Cluster Auto Scaler etc.• Deployed and managed Istio service mesh on AWS EKS, improving service discovery and traffic management for the microservices.• Led DevOps development activities using Kubernetes, Docker, Artifactory, GitLab, and Terraform, resulting in overall reduction in deployment time.• Perform CI/CD automation to multiple environments and pipeline setups with Terraform, Gitlab, Artifactory and versioning to automate application deployments.• Configured ingress controllers using AWS Network Load Balancer and Istio for SSL/TLS termination.• Implemented monitoring and alerting for Kubernetes workloads using Dynatrace, Grafana, Prometheus, loki and CloudWatch.• Customized Istio service mesh to enforce IP-based access controls, enhancing security posture for microservice access.• Automated canary deployments on Kubernetes using Istio virtual service and destination rules, to reduce deployment risks.• Established AWS cross-account connectivity using VPC private link, facilitating secure data exchange between AWS accounts.• Setup Gitlab CI/CD pipeline to deploy the AWS infrastructure on multiple AWS accounts using Terraform provider.• Automated AWS AMI updates on EKS nodes using GitLab CI/CD pipeline, improving node security and stability.• Setup Gitlab CI/CD pipeline to create base image using docker file and store it to ECR repository.• Developed and maintained Terraform modules for AWS resource provisioning, ensuring scalability and compliance with infrastructure as code best practices.• Responsible for migrating and maintaining AWS Aurora MySQL, SQL Server and PostgreSQL databases.• Deployed AWS DMS for migrating data for Mysql, SQL Server and PostgreSQL databases from on-prem to AWS Cloud.