Rajinikar B.
Sr Engineer, Eis @Molina Healthcare
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WORK HISTORY
Sr Engineer, Eis @Molina Healthcare
Long Beach, CA, US
Build a new Databricks workspace in Azure Cloud. Migrate workloads from Cloudera CDP 7.1.7 to Azure Databricks.Set up virtual private network(VNET) and shared-infra-vnet for data bricks workspace.Create an Azure data lake storage account for storing data at different layers like raw data, L0/L1/L2. Prepared cluster policies to spin up job clusters in Databricks workspace. Created interactive/all-purpose cluster for running ad-hoc queries and validations on data. Intergrated Azure data bricks workspace with Azure active directory for user authentication. Implemented access control lists (ACLs) permission to access workspace objects (folders, notebooks, experiments, and models), clusters, pools, jobs, Delta Live Tables pipelines, alerts, dashboards, databases, queries, and SQL warehouses. Data ingested from Cloudera clusters into Azure data lake storage accounts. Integrated Splunk tool with Azure data bricks for pushing logs into storage accounts and monitoring dashboards. Implemented Azure DevOps CI/CD pipeline for changes into Azure data bricks. Integrated Autosys and scheduled all workflows from Autosys. Implemented email notifications at workflows and dashboards for alerts.
EDUCATION
American college of commerce and technology
Master's degree, Computer and Information Sciences and Support Services
University of the Cumberlands
Masters, Computer and Information Systems Security/Information Assurance
University of the Cumberlands
Master's degree, Business Administration and Management, General
JNTUH College of Engineering Hyderabad
Bachelor's degree, Information Technology
ABOUT RAJINIKAR B.
Experience in Hadoop Administration & Big Data Technologies. Hands-on experience with Hadoop stack.(HDFS, Map Reduce, YARN, Sqoop, Hive, Impala, Tez, Zookeeper, Oozie, Solr, Sentry, Kerberos, Hue, Kafka). Experienced in Horton works and Cloudera distributions Hadoop Clusters. Hands-on experience in daily operations and deploying changes into Hadoop cluster. Hands-on experience in installing, configuring, and maintaining Cloudera, MapR, and Hortonworks clusters and installing Hadoop ecosystem components like Hadoop, Hive, HBase, Sqoop, Kafka, Oozie, Spark, Yarn, and Impala. Hands-on experience in optimizing and making cluster high availability 24*7 for data pipelines to run. Cloudera Hadoop version CDH3, CDH 4. X, and CDH 5. X in a Multi Clustered environment.Upgrading cluster from lower version to the latest available version such as Cloudera Hadoop version CDH 5.1, CDH 6.1.6 to CDP 7.1.7 on-prem servers.Written shell scripts and successfully migrated data from Prem to Azure data storage(ADLS, ADLS Gen2).Good understanding and hands-on experience in Hadoop Cluster capacity planning, production cluster, performance tuning, cluster monitoring, and troubleshooting hive queries.Installing Operating Systems in new nodes and configuring disks, quota, LDAP, Kerberos, and other prerequisites. Adding new nodes and de-commissioning the old nodes which have hardware issues. Implemented DR cluster with BDR replication setup and Implemented Wire encryption for Data at REST. Involved in several scheduled Spark, Hive & Sqoop jobs in Autosys.Assist developers with troubleshooting hive, impala, and BI teams as required.
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