Applied Scientist Interview Questions

1,167 applied scientist interview questions shared by candidates

1. 30 minute behavioral, 30 minute technical. Behavioral interviewer was quite friendly, it was more like a conversation. Typical questions like What role do you play in a team etc. Technical interviewer was quite cold which was unexpected from Deloitte for me but maybe it's only normal by industry standards. Basic questions from data science, 2 SQL queries, 1 probability problem. 2. Take home 8 hour Case Study assessment (data science problem - visualization, modeling and estimation showcasing results) + Presentation 3. 30 minute Behavioral, 60 minute Technical (where you present your case study followed by QnA), 15 minute interview with Partner. The whole interview scheduling seemed very rushed, and I got my scheduled interview slots typically within 36 hours of the interview. Candidates also had to fill out forms and take the Pyrometrics assessment (which was interesting) in a day's notice which is fine, but I think they could give us more buffer time. It would be expected from an established firm as Deloitte. I got through the Take Home Assessment but cancelled my 3 remaining interviews when I got another offer, only because they repeated the whole "notify late" process. I think candidates also deserve more respect for their time.
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Data Scientist Applied AI

Interviewed at Deloitte

3.6
Nov 5, 2020

1. 30 minute behavioral, 30 minute technical. Behavioral interviewer was quite friendly, it was more like a conversation. Typical questions like What role do you play in a team etc. Technical interviewer was quite cold which was unexpected from Deloitte for me but maybe it's only normal by industry standards. Basic questions from data science, 2 SQL queries, 1 probability problem. 2. Take home 8 hour Case Study assessment (data science problem - visualization, modeling and estimation showcasing results) + Presentation 3. 30 minute Behavioral, 60 minute Technical (where you present your case study followed by QnA), 15 minute interview with Partner. The whole interview scheduling seemed very rushed, and I got my scheduled interview slots typically within 36 hours of the interview. Candidates also had to fill out forms and take the Pyrometrics assessment (which was interesting) in a day's notice which is fine, but I think they could give us more buffer time. It would be expected from an established firm as Deloitte. I got through the Take Home Assessment but cancelled my 3 remaining interviews when I got another offer, only because they repeated the whole "notify late" process. I think candidates also deserve more respect for their time.

What are hallucinations, and how to avoid them, what is catastrophic forgetting, and similar questions. Another manager round with some HR questions, like sharing past learning experiences, was also asked about an open-ended ML system design for next-word prediction in an app. Third was the coding round, where they asked me to find an accurate threshold for classifying using a really bad classifier. The answer should be the F1 score, and I was supposed to code it up live.
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Applied Scientist Intern

Interviewed at Microsoft

4
May 25, 2026

What are hallucinations, and how to avoid them, what is catastrophic forgetting, and similar questions. Another manager round with some HR questions, like sharing past learning experiences, was also asked about an open-ended ML system design for next-word prediction in an app. Third was the coding round, where they asked me to find an accurate threshold for classifying using a really bad classifier. The answer should be the F1 score, and I was supposed to code it up live.

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