Data engineer Interview Questions

Precision, Recall, F-score, Accuracy, ROC

Through questions like this, interviewers are mostly trying to test your skillset (and its relevance to the role) as robustly as possible, so be prepared for multiple offshoots and followups. It could be a useful exercise to do mocks with friends or colleagues in Bumble to get a real sense of what the interview is actually like. Alternatively Prepfully has a ton of Bumble Senior Data Scientist experts who provide mock interviews for a pretty reasonable amount. prepfully.com/practice-interviews

2years

I have no experience

Solve 2 Java problems

Hey could you elaborate on the java questions you were asked

Map>> ret = mappy.entrySet().stream(). collect( Collectors.groupingBy( x -> x.getValue())); Map result = ret.entrySet().stream().collect ( Collectors.toMap( x -> x.getKey(), y -> y.getValue().stream().map( p -> p.getKey()).collect(Collectors.joining(",")))); System.out.println(result);

d = {'A': 10, 'B': 5, 'C': 5, 'D': 12, 'E': 3} d2 = {} for k, v in d.items(): if d2.get(v, '') == '': d2[v] = k else: d2[v] = "{}, {}".format(d2[v], k) for k, v in d2.items(): print "{}: {}".format(k, v)

I explained the exact work that I do in my current company.

How many interview rounds are there ?

I would offer to take a smaller role within the project to gain experience but not to impact my current work

I would kindly decline and my work load is currently filled but I would help find someone with similar interest in the role and ask if they are willing to take on such task

I did the usual stages of the data science process - Data Prep, EDA, Modelling, Visualisation, Contextualisation.

Can you please brief me about what kind of data set was provided and what was your approach towards it , i.e. the algorithm you used and your justification for it and other similar stuffs ?