Java, Pyspark, Apache Spark, Sql, Apache Airflow, Databricks, Python, Apache Hive, AI ML Platform Integration, Performance Tuning and Troubleshooting, System Design and Architecture, Distributed Data Processing Frameworks, Observability and Monitoring Tools, Cloud Platforms, Data Engineering and Big Data Platforms, CI CD and DevOps Practices, Kafka or Streaming Technologies, Data Lakes and Data Warehousing