Cluster Management Install, configure, and maintain Hadoop clusters (Cloudera, Hortonworks, or Apache Hadoop) Manage core components including HDFS, YARN, MapReduce Perform cluster scaling, upgrades, and patching Administration & Monitoring Monitor cluster performance, health, and usage Troubleshoot and resolve cluster issues, failures, and bottlenecks Implement alerting and monitoring tools (Ambari, Cloudera Manager, Grafana) Security & Governance Configure and manage Kerberos authentication Implement data security policies using Ranger / Sentry Handle user access controls and permissions Data Management Manage data storage, replication, and backup strategies Optimize HDFS performance and storage utilization Handle data ingestion and integration workflows Performance Optimization Tune Hadoop cluster performance (memory, CPU, storage) Optimize YARN resource allocation and scheduling Identify and resolve performance issues in jobs Integration & Support Support tools in Hadoop ecosystem: Hive Spark HBase Sqoop / Flume / Kafka
