final rounds are hard with tons of machine learning cases. Must be ready to throw your idea to the table. Recommend to do more mock interview with peers or other ppl.
One technical round with basic python/EDA/ML questions, followed by a case round, followed by 3 back to back cases. The cases were testing fundamentals, and how you respond under pressure, as well as your communication and applied data science skills
Interview questions [1]
Question 1
1. Predictive maintenance case - if you have more time how will you explain to a client how you'll improve a model
2. Random forest - if you have a noisy dataset (lots of features that don't matter) whats the probability of the 2 features of interest being present in any single tree that randomly selects 50 features out of 100
I applied through other source. The process took 3 weeks. I interviewed at Boston Consulting Group in Feb 2026
Interview
Coding assessment, involving basic pandas questions towards data cleaning, preprocessing, structuring, and also questions regardind ML.
It involves the need to understand pandas, scikit and numpy very well.
Totally automated via Code Signal.
I interviewed at Boston Consulting Group (New York, NY)
Interview
First a online One-way interview, then online python coding round, then is a live coding+technical case with real person, last round will be 3 technical cases with partners. Case can be technically challenging
Data Science Intern applicants have rated the interview process at Boston Consulting Group with 3.4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 48% positive. To compare, the company-average is 65.8% positive. This is according to Glassdoor user ratings.
Candidates applying for Data Science Intern roles take an average of 24 days to get hired, when considering 21 user submitted interviews for this role. To compare, the hiring process at Boston Consulting Group overall takes an average of 32 days.
Common stages of the interview process at Boston Consulting Group as a Data Science Intern according to 21 Glassdoor interviews include:
Phone interview: 29%
One on one interview: 21%
Skills test: 21%
Personality test: 8%
Presentation: 8%
Other: 8%
IQ intelligence test: 4%
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