What questions are asked in Data Engineer interview? 

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How does Amazon’s Data Engineer role work? What are the responsibilities? How much does an Amazon Data Engineer earn? Does it require previous programming experience? Is there flexibility in where I can work? These are just some of the questions you might have about this role. This guide helps you get to know the role and what skills you need to get hired in this position at Amazon. 

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First Round – Technical Interview 

Having a fundamental understanding of how data structures work will go a long way toward giving you an edge. You can gain that knowledge by studying and working with data structures, or you can take advantage of technology-specific resources such as Microsoft Virtual Academy. Once you’ve got your fundamentals down, be sure to brush up on any technologies mentioned during your job search. For example, if you know that Amazon is looking for candidates with Java experience, look into both Java and Amazon Web Services (AWS). The more familiar you are with these technologies or any Cloud computing technologies used by your potential employer the better off you’ll be during technical interviews. If possible, try to get some hands-on practice before going in for an interview; otherwise, prepare yourself well enough so that it doesn’t come across like you don’t know what’s going on. In addition to specific programming languages and frameworks, think about which skills you need to demonstrate. For instance, do they want proof of strong problem solving abilities? Are they expecting expertise with emerging or bleeding edge technologies? Is this position heavily focused on writing code, whereas another requires only minimal coding chops? Prepare answers ahead of time so when they ask behavioral questions based around those IT jobs experiences they won’t have to struggle through getting ready with their response. Prepare yourself well enough so that it doesn’t come across like you don’t know what’s going on. 

Second Round – Coding Questions 

There were two coding questions. First, given a word, count how many times it occurs in a document and print that word with its count. Second, given two words and a list of possible links between them (we had to choose a subset), find out if those two words indeed can be linked together. So for example for the words ‘goat’ and ‘cabbage’, we could have . We need to write a program that given these links will find out whether they form cycles (that is if there exists some link that connects ‘goat’ with ‘cabbage’ using some other link) or not. If yes, then it will give an error message saying Cycle detected else it should say no cycle detected. Even though I am experienced as a data engineer, I was surprised by a few things here: You would think that Amazon’s engineers would provide data points that you could use. Instead they simply gave us dummy values along with descriptions of what each value means which even discouraged me from figuring it out on my own. 

Third Round – Behavioral Interview 

In a typical third-round, you’ll meet with up to three people on a team. These meetings can last as long as two hours and will be comprised of behavioral interview questions. Be prepared to answer situational questions that evaluate your thought process. Example: Tell me about a time when you made an unpopular decision at work. If possible, find out who you’re going to be interviewing with beforehand so that you can research their background and prepare yourself for some specific topics they may cover. The purpose of these interviews is to see how you react under pressure, how well you communicate with others and whether or not they believe you would be able to fit into their company culture. Questions might revolve around what motivates or demotivates someone (like challenging deadlines), problem solving scenarios, self-evaluation approaches or personality style matching. 

By aamritri

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