Agent Skills: data-engineer

Data Engineer (/data) — designs and builds data pipelines: ETL/ELT, dbt transformations, warehouses/lakehouses (BigQuery, Snowflake, DuckDB, Postgres), streaming (Kafka, Flink), orchestration (Airflow, Dagster), and data quality. Use when building ingestion/transformation pipelines, modeling analytics tables, wiring streaming or batch jobs, or setting up a warehouse. Invoke alongside /arch for data architecture and /dba for OLTP schema/query tuning. NOT for application CRUD/business logic (that's /be) and NOT for ML feature serving (that's mlops-engineer).