Qantas Data Engineer Interview Questions
The questions to prepare for a Qantas Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Return the values that appear more than once in an array using a hash set in linear time.
QantasTests understanding of core data structures and correct implementation approach.
QantasTests ability to reason about time and space complexity for algorithmic solutions.
QantasA structured approach to debugging production data pipelines, with focus on orchestration, data quality, idempotency, and safe backfills.
QantasApproach for maintaining data quality and integrity across ETL pipelines.
QantasCompare ETL and ELT, and explain when ELT is the better pipeline pattern.
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Tests understanding of relational vs non-relational data models and when to use each.
QantasTests SQL query writing and ability to extract the right metrics from data.
QantasCalculate the monthly spending trends for customers using window functions and joins.
The Home Depot
Aviso
World Wide TechnologyUse window functions to compare each customer's monthly activity against prior months and identify behavior changes.
QantasAggregate monthly sales by product category and use LAG to calculate month-over-month changes.
Total Wine & More
Inc.
Benjamin Moore