cost-aware processing patterns. Produce high-level and low-level technical designs, document assumptions, and contribute to architecture reviews. Implement data-quality checks, schema validation, reconciliation, audit logging, lineage, monitoring, alerting, and error-handling mechanisms. Troubleshoot complex production issues, perform root-cause analysis, and deliver sustainable corrective actions. Apply security … experience with GCP data services, particularly BigQuery, Dataflow, Cloud Storage, and Pub/Sub. Proficiency in SQL, including complex transformations, query tuning, data validation, and analytical processing. Proficiency in Java or Python for data pipelines, automation, API integration, and production support. Good understanding of ETL/ELT, data warehousing, data ...