IBM Business Services Data Engineer Interview Questions
The questions to prepare for a IBM Business Services Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Reverse a singly linked list in-place using iterative pointer manipulation.
Use a hash map to find two array elements that sum to a target in O(n) time.
Scan the array once to track the largest and second largest distinct values in O(n) time.
Aggregate posted OneTrust privacy request charges by date and calculate cumulative revenue with a CTE and window function.
Find the second highest salary in each department without using aggregate functions.
Explain normalization for data integrity and when denormalization is useful for faster reporting and simpler analytical queries.
Aggregate completed SMX product sales and return the top 10 products by units sold.
SMX
Bell
EazeSign up to see every question
Create a free account to unlock this list and practice real interview questions.
Optimize a PySpark join when one DataFrame is much smaller, focusing on join strategy, shuffle reduction, and practical Spark tuning.
Design the core pipeline infrastructure for a new project, with attention to orchestration, data quality, idempotency, and future scale.