Comprehensive understanding of GCP core services (BigQuery, Cloud Storage, Cloud SQL, Datastore, Pub/Sub, DataProc, Managed Apache Spark), Cloud infrastructure, networking, security governance (IAM & Admin role, Cloud Security, VPC Networks, Firewalls), Cloud Billing & Resource Usage, Observability and Logging, Workload management and Scaling. Apply normalization/denormalization techniques, Dimensional Modeling (Star/Snowflake schemas), Data Vault 2.0, and Medallion Architectures; integrate models with data lineage tools, active data catalogs, and data quality checks so changes are tracked and impact analysis is automated.