SENTHIL AMARNATH

Project Details at Danske IT Support Service, Bangalore, India

➢ Client : Danske Bank

➢ Ecosystem : Ambari Hadoop 2.6.x V, Cloudera Data Platform 7.x V, Confluent Kafka 6.4.4

➢ Operating System : CentOS release 7 , RHEL7, RHEL9

➢ Role : IT Platform Engineer, Senior

• Led the collaborative effort to architect and implement big data clusters.
• Experience on Hadoop Distribution like Cloudera and Hortonworks Distributions
• Experienced of configured more than one namenode and monitor active namenode and standby namenode.
• Performance optimization Experienced of analyze problem, plan, Design, and Create a Hadoop Cluster for a use case, setup and configure commonly used Hadoop ecosystem components such as Impala and Hive.
• Successfully migrated a Hadoop cluster from a DBLAN network to a more secure enclave microsegmentation network.
• Performed disk replacements to ensure system recovery after hardware malfunctions
• Experience in Handling Confluence Kafka Cluster
• Contributed to a DevOps team responsible for the Quantexa AML Platform on OpenShift.
• Led the sidecar migration of a Hortonworks cluster to a CDP cluster, minimizing downtime
• Created detailed reports on engineering activities and findings.
• Collaborated with other departments to facilitate successful project completion and Migration

Project Details at Danske IT Support Service, Bangalore, India

➢ Client : Enterprise Customer for Cloudera

➢ Ecosystem : Cloudera Data Platform 6.xV & 7.xV

➢ Operating System : CentOS release 7 , RHEL7

➢ Role : Customer Operation Engineer

• Delivering remote technical support on break-fix issues and offering operational guidance via Zoom, phone, and case updates.
• Utilizing active listening techniques to identify and comprehend customer issues and their current business impact, while driving prompt resolution with a sense of urgency.
• Providing proactive support by creating Knowledge Base articles and Community posts.
• Successfully addressed N Impala-related problems in customer clusters, demonstrating my SME proficiency.
• Collaborated with the development team to identify a bug and expedite its resolution by requesting a hotfix through the backend portal.
• Proven ability to work with all Cloudera distributions (CDH, CDP, etc.) within private cloud deployments.
• Proven ability to leverage Linux environments to diagnose and solve system-related problems.

• Responsible for the installation, configuration, maintenance, and troubleshooting of Hadoop Cluster.
• Monitoring cluster performance using various tools to ensure the availability, integrity, and confidentiality of application and equipment.
• Experience in installing and configuring RHEL servers in Production, Test and Development environment and used them in building application and database servers.
• Deployed the Hadoop cluster in a cloud environment with scalable nodes as per the business requirement.
• Installed, configured and optimized Hadoop infrastructure using Cloudera Hadoop distributions CDH5
• Monitored workload, job performance and capacity planning using the Cloudera Manager Interface.
• Improved the Hadoop cluster performance by considering the OS kernel, Disk I/O, Networking, memory, reducer buffer, mapper task, JVM task, and HDFS by setting appropriate configuration parameters.
• Experience in commissioning and decommissioning nodes of the Hadoop cluster

➢ Client : SC Johnson, HDFC Home loan Bank, Honey Well,Mr. Cooper

➢ RDBMS : Product Implementation Engineer, Ambari Hadoop Configuration and Troubleshooting, HDFS, HBase, Hive, Yarn, Docker,Basics of Kubernetes, Resource Manager, Zookeeper

➢ Operating System : CentOS release 7

➢ Role : Engineer E3

• Managed works including indexing data, tuning relevance, custom sorting and regionalization with Solr Search Engine.
• Skilled in utilizing Spark for large-scale data processing, Hive for data warehousing, YARN for resource management, Kafka for real-time streaming, HBase for NoSQL data storage, and Oozie for workflow orchestration. (This option showcases in-depth knowledge of each tool)
• Possess expertise in log analysis and management tools for distributed Hadoop platforms. Implemented dashboards and automated application health monitoring systems for comprehensive system oversight.
• Proven track record as a DevOps Engineer, streamlining software development lifecycles through automation and infrastructure management.

➢ Client : National information center (NIC), Zenit (UAE)

➢ Service : Linux , RiverBed Monitoring Tools, Insight Monitoring, Grafana, Oracle SQL.

➢ Operating System : CentOS release 6.9 (Final)

➢ Role : NOC Engineer

• Played a key role in the successful deployment of application upgrades and deployments, ensuring minimal disruption to end users and achieving a 100% success rate.
• Worked closely with developers to identify and resolve application issues
• Used diagnostic testing equipment to test software and hardware for bugs and other problems.
• Maintained records of network activity to increase security of the system
• Maintain Routing Rules at the time of Heavy Traffic Campaign Time
• SMSC Application Support for Aggregated Customer