I applied online. The process took 4 weeks. I interviewed at Boston Consulting Group (Washington, DC) in Aug 2025
Interview
First round is an online assessment with probability questions and conceptual ML questions. Then an end to end ML workflow using common data science libraries, very limited on time.
Second round is online business case interview assessment, before a live interview doing basic data manipulation tasks, followed by a technical business case (get tested on both hard ML skills and business intuition).
Final round is 3 technical cases with partners. I felt like I aced 2/3 of these but unfortunately they said I didn't perform well.
Interview questions [1]
Question 1
ML pipeline with data cleaning using numpy/pandas/sklearn
I interviewed at Boston Consulting Group (Boston, MA)
Interview
Coding challenge, then soft skills which i did not get to. Coding challenge was online timed in a third party tool. Not very hard but needed more time and didnt move quick enough.
The process includes six stages: HR screening, CodeSignal online assessment, basic pandas and data science case interview, followed by three business case interviews focused on practical problem-solving and business impact.
Interview questions [1]
Question 1
Check CodeSignal’s documentation for data science interviews to understand the types of tasks
I applied online. I interviewed at Boston Consulting Group (Tokio)
Interview
Four interviews in total, all in Japanese. The first interview consisted of Python coding and technical case questions. The next two were both technical case interviews. The final interview with a partner was a mix of behavioral and business case questions.
Interview questions [1]
Question 1
You have a grocery store chain client who wants to increase their sales. They have stores across the country. How would you approach it?