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649 aws engineer interview questions shared by candidates

Find the maximum value in all possible subarrays of size K (sliding window maximum problem). Given an array of integers and a window size K, return the maximum values as the window slides through the array. This is a LeetCode hard-level algorithm question that's rarely relevant for data engineering roles, which typically focus on SQL optimization, ETL pipelines, and data architecture rather than complex algorithmic problems.
avatar

AWS Lead Data Engineer

Interviewed at Ascendion

3.8★
Jul 18, 2025

Find the maximum value in all possible subarrays of size K (sliding window maximum problem). Given an array of integers and a window size K, return the maximum values as the window slides through the array. This is a LeetCode hard-level algorithm question that's rarely relevant for data engineering roles, which typically focus on SQL optimization, ETL pipelines, and data architecture rather than complex algorithmic problems.

Write a SQL and PySpark code to display the 2nd lowest salary employees for each department having more than 10 employees, along with their employee name and department name. Two tables Employee and Department is giving? What to use Row_Number, Rank or Dense Rank?
avatar

Senior AWS Data Engineer

Interviewed at Blend360

4.2★
Jun 5, 2025

Write a SQL and PySpark code to display the 2nd lowest salary employees for each department having more than 10 employees, along with their employee name and department name. Two tables Employee and Department is giving? What to use Row_Number, Rank or Dense Rank?

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