ETL Developer

Move data without creating silent debt.

This skill is for operational data movement: extracting from source systems, transforming records into reliable structures, loading them into destinations safely, and making the whole path debuggable when sources change, jobs fail, or reprocessing is required.

Use this skill to

• design ETL or ELT pipeline architecture
• choose extraction methods and change-capture strategy
• define schema mappings and transformation rules
• build incremental, snapshot, or replay-safe load patterns
• plan backfills, reprocesses, and cutovers
• diagnose broken jobs, duplicates, gaps, or drift
• add data-quality checks, reconciliation, and observability

Do not use this skill to