How would you run multiple programs if threads are restricted by the python GIL
Data Engineer Interview Questions
Data Engineer Interview Questions
Data engineers are IT professionals who are needed in almost every industry. Data engineers monitor data trends to determine best next steps for companies. A critical part of a data engineer job is to process raw data into usable data by creating data pipelines and building data systems.
Top Data Engineer Interview Questions & How To Answer
Question #1: Can you describe in detail your level of expertise with programming languages?
Question #2: Explain data engineering in your own words.
Question #3: Can you describe your experience working with Apache Hadoop and cloud data management environments?
20,132 data engineer interview questions shared by candidates
nothing difficult.
Can you describe a data pipeline you’ve built, the tools you used, and the business impact?
Write a function to parse a string make sure that it's a well formed JSON. Essentially matching the order of opening and closing enclosures (){}[]. Erroneous examples would have them out of order and opening without closing or closing without opening.
Correlated SQL queries, when would you use it and why? What executes first, inner or outer ?
2 python -> buy/sell I + needle/haystack 1 mysql -> nth highest salary without row_number/rank
There was a string parsing question via Python. Just know how to parse a string into words or even letters and to apply some sort of logic to the string.
given some sample web UI log data, write a python algorithm to answer various questions
Don't focus only on Leetcode SQL questions. Their questions are more higher level. Prepare for advanced ETL questions. You should write the best solution immediately instead of just writing the solution down.
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