What does a Data Engineer do in Production (No Hype)

Production data engineering is about running resilient data systems, not just writing ETL code.

Data engineers build and maintain reliable pipelines, enforce data quality, and design for downstream BI, ML, and API use.

They also monitor and debug jobs, handle schema changes and late data, and reprocess safely when needed.

The work requires balancing cost, performance, and risk to keep business data dependable in production.