About

Arun Nagalingam is an experienced Engineering Lead at IDFC FIRST Bank with over 10 years of relevant experience in the field of DevOps. He has expertise in Linux-based operating systems such as Centos, Ubuntu, and Alpine and is skilled in creating VM templates and Docker base images in Linux. Arun is an expert in Dockerizing applications on ROR, Springboot Java, and NodeJS and providing high availability on application VM/Docker. He is also proficient in maintaining Kubernetes in-house clusters, including node sanity, Taint, cordon, worker node health, and automating the addition of new nodes. Arun has experience in GKE cluster migration from in-house, traffic movement, creating deployment, autoscaling, and health-check. He is also experienced in handling traffic in GKE ingress to the downstream pods and automating cloud stack creation by terraform for DR. Arun has experience in handling S3 bucket, IAM, EC2 on AWS and Apache on handling rewrite, redirection, reverse proxy, injecting header, and removing header. He has experience in fixing web-based vulnerabilities and fixing them without impacting production and handling haproxy on handling traffic based on header, rewrite, reverse proxy. Arun is an expert in managing Citrix load balancer, VIP creation, cs policy creation, rate limit, responder policy, blocklisting, filter by response headers, and SSL offloading. He has expertise in managing DNS, creating zones, and managing records using Tinydns. Arun has experience in handling GIT and Bitbucket SCM and automating repeated tasks by shell scripting and Ansible to increase team productivity. He is proficient in maintaining CI/CD by using Jenkins and Bitbucket pipeline and automated complete deployment cycle by a pipeline - build, deployment, Pod Restart, pod rollout. Arun has experience in creating a playbook for automation, including the addition of new kube worker, WordPress creation, and ELK stack creation. He has experience in handling Akamai CDN for 12 domains, maintaining cache, rewrite, redirection, header add, cookie add, routing traffic on the basis of cookie and header. Arun has strong knowledge of APM monitoring and capturing logs into ELK. He also has a basic understanding of Nagios, ELK, Kafka, and Elasticsearch. Arun has migrated AWS VMs to GCP and managed the safe traffic routing with zero downtime. He has previously worked as a Senior DevOps Engineer at Paytm and as an Infrastructure Engineer and System Administrator