Key Responsibilities: 1. Install, configure, and manage Hadoop clusters (HDFS, MapReduce, YARN, etc.) 2. Monitor cluster performance, identify bottlenecks, and optimize resource utilization. 3. Implement and manage Hadoop security (Kerberos, ACLs, encryption). 4. Develop and maintain scripts for automation (Python, Shell). 5. Collaborate with developers to optimize data processing workflows. 6. Troubleshoot Hadoop-related issues and provide Level 3 support. 7. Plan and execute cluster upgrades,