Data Engineer Mock Interview
Master 25 Data Engineer interview questions covering pipelines, ETL, SQL optimization, and distributed systems.
Question 13 of 25
Describe a time when you found a new use for existing data that had a positive impact on the business.
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Helen Lee is a freelance data analyst and writer. She has over 15 years of marketing experience working for companies and clients in financial services, quick-service restaurants (QSR), consumer packaged goods (CPG), and education technology.
As a Data Engineer, you may be one of the few who have a bird's eye view of the data throughout a company. In many situations, departments work with a specific set of tables within the corporate databases and therefore may unknowingly be limiting their analyses. To add the most value to the company's strategies, it is valuable, at a general level, to know the initiatives of each department. This gives Data Engineers the ability to provide valuable insight into what data is available and beneficial for analyses being conducted throughout the company.
Helen Lee is a freelance data analyst and writer. She has over 15 years of marketing experience working for companies and clients in financial services, quick-service restaurants (QSR), consumer packaged goods (CPG), and education technology.
"As a Data Engineer, I try to take time to understand the strategic initiatives being conducted across the company. I believe departments need to avoid working in silos and should have approved access to data owned by other groups within the company. From my perspective as a Data Engineer, I was able to connect employee data with sales data to better understand the reasons behind both high and low sales periods. Upon further analysis, it was revealed that hiring employees with a particular education and work experience profile resulted in significant increases in sales for an extended period of time. Prior to this discovery, human resource data was never used in conjunction with sales data for analyses."
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