⚡️ Key stack (required): 🐍 Python (ETL scripts, pandas, API) 🌀 Airflow (writing and debugging DAGs, not just looking) 🔥 PySpark (transformations, optimization, partitioning) 🌊 NiFi (flow design, errors, monitoring) 🐘 Greenplum / PostgreSQL / Clickhouse 🛢 Oracle + Hive (Parquet/ORC, metastore knowledge) 📊 Grafana/Prometheus (ETL metrics) 📦 Kafka + integration with BI

🎯 Tasks: — Documentation AS IS / TO BE — Complex SQL (window functions, joins) and optimization for highload — Data validation and quality metrics after migration — Work with billing

➕ Will be a plus: Team management experience (4+ years) and the ability to translate business tasks into technical specifications.