Distributed Compute with PySpark: Understanding driver-worker cluster architecture, DAG compilation, Catalyst optimizer, wide vs narrow transformations, and Broadcast joins.
Event Streaming with Apache Kafka: Configuring multi-broker clusters, topic partitions, consumer groups, offset retention, and building real-time microservices.
Workflow Orchestration with Apache Airflow: Authoring robust Python DAGs, managing task dependencies, automated retry policies, sensors, and backfilling.
Modern Cloud Data Warehouses: Designing dimensional star schemas, partitioning strategies, and ELT pipelines in Snowflake, BigQuery, or Amazon Redshift.
Open Lakehouse Formats: Writing and querying ACID Delta Lake and Apache Iceberg tables with Time Travel on Amazon S3.