DevOps Technical Lead specializing in Kubernetes, AWS, and platform engineering
Colombo, Sri LankaTechnical Lead - DevOps6 years experienceDirectorTechnologySaaSCloud Computing
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About
Sri Lanka–based DevOps/Platform engineer focused on Kubernetes and AWS who has led real production incidents and recoveries (network-policy-induced asymmetric routing; node pool failure due to CNI upgrade). Built production CI/CD with GitHub Actions (ephemeral self-hosted runners on EKS), ArgoCD, Vault, and Terraform, and led a phased ECS-to-EKS migration including Kafka consumers and MongoDB Atlas private endpoints.
Led end-to-end incident response across application and Kubernetes cluster layers
Identified network latency/TCP retransmissions via Datadog and traced root cause to misconfigured network policy/security group causing asymmetric routing
Stabilized production outage by pausing automation, coordinating comms, and applying ingress rate limiting
Recovered from node pool failure by cordoning/draining nodes and rolling back CNI plugin via Terraform/GitHub Actions
Planned and executed phased ECS-to-EKS migration with detailed cutover docs, rollback plans, and stakeholder coordination
Built secure, repeatable CI/CD with GitHub Actions (reusable workflows), ArgoCD, Vault, and approval gates tied to change tickets
Diagnosed Terraform pipeline failure to IAM permission regression affecting DynamoDB state locking and restored access
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