Q: Using the daily_customer_addresses table, provide all the contiguous date ranges when customer '2051' lived on 123 Main St.
Senior Data Engineer Interview Questions
2,567 senior data engineer interview questions shared by candidates
Questions on experience relating to creating end to end data solutions using Azure.
1st round is technical. 2nd round manager will ask your current salary, previous salary, 1st salary. How can you expect x% hike etc.
It was a quick call where they asked about my working experience and expectations.
SQL questions involving simple aggregations and joins, but my interviewer got caught up on the intricacies of date formatting (that wasn’t part of the question). Since I code primarily in SparkSQL and PySpark he got bent out of shape about how my answer wasn’t correct. Huge waste of my time. There was also a question about calculating rolling averages where the “solution” was a cross join (an antipattern that almost certainly wouldn’t work in a prod environment) so this gives you a sense of what we’re dealing with. The whole thing felt like it was something dreamed up by someone with 2-3 years of data engineering experience who is fully on the Dunning Kruger curve and thinks they’re a lot smarter than they actually are.
More around Java threading , oops concept and cluster related questions
Tech interview consisted of two blocks. The first one was about reviewing some code written in Python; pointing out potential flaws in the design and reasoning about how to fix them. The code snippet looked like a module that a Data Scientist that lacks understanding of software engineering would write. Second part was about writing a sql query that would filter and join a couple of tables to compute a metric with multiple levels of aggregation.
An example of a project where you worked in with bringing up many dataset on board.
Tell me about yourself in detail
Whats the similarity on map join in hive and broadcast join in spark
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