Your question is Data Cleaning and Coding. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about your experience with coding and data cleaning.
Discuss the languages, frameworks, and AWS services you have used to build or maintain ETL pipelines. Explain how you profile source data, handle missing or duplicate records, validate schemas and business rules, preserve data lineage, and test transformations. Include a concise example of a production data-quality issue, the code or SQL approach you used, and how you monitored the result.