Bolt Data Scientist Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 29 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Bolt.
Bolt
Data Scientist
Entry Average Positive experience No offer 3 rounds
Interview process
Recruiter call Technical screen Technical screen
Interview formats
Technical Coding Technical
It was pretty standard. First, I spoke with HR, and they asked a few technical questions to check my knowledge beforehand. You needed to answer a couple correctly to proceed. For example, they asked if a specific algorithm is supervised or unsupervised, and about the expectation of a simple, discrete probability. After that, there was a technical interview with five tasks covering different areas, including SQL coding, Python, and some probability problems. The interviewer was really nice and helpful.
Confirmed questions1 question
- Regarding a database containing car models and their prices, can you show each model along with its minimum price?
Bolt
Data Scientist
Mid Average Negative experience No offer 2 rounds
Interview process
Recruiter call Technical screen Offer
Interview formats
Technical Coding
It was a strange recruiting experience. First, I had a meeting with the recruiter where they asked basic questions and a few quick data science ones, but the interaction felt off. They then said the next step would be a technical interview, which contradicted their email that mentioned a take-home assignment. I did have the technical interview, and it was actually handled really well. I had a good conversation with the interviewer, and I felt like they wanted me to do well. I received feedback that the technical interview went very positively, but they were waiting on a decision from the hiring manager before moving forward. This was over a month ago, and I haven't heard anything since, so I assume it's been dropped for some reason. Glad we both wasted our time.
Confirmed questions3 questions
- What is A/B testing?
- Show me how to use partitions in SQL.
- Is it possible for linear regression to predict a value outside the training data range?
Bolt
Data Scientist
Entry Average Negative experience No offer 2 rounds
Interview process
Recruiter call Technical screen
Interview formats
Technical Coding
The recruiter was unprofessional from the start, cutting me off to scold me for not instantly confirming I could hear her, which was obvious. This made me uncomfortable. Later, when I struggled with technical questions, she condescendingly said she'd be questioned if she passed someone with 'no technical skills.' While I know interviews are quick, basic politeness and professionalism are important for a good candidate experience and for the company's image.
Confirmed questions3 questions
- What would be the result of adding 9 to NULL in SQL?
- What is the probability of getting a 6 when rolling a die?
- Can you explain the Softmax function?
Bolt Data Scientist Interview Questions
Quoted word for word from Bolt interview reports.
“What is the probability of getting a 6 when rolling a die?”
Read reports →“What would be the result of adding 9 to NULL in SQL?”
Read reports →“Explain the distinction between K-means and KNN, including completing Python functions for each.”
Read reports →“Is it possible for linear regression to predict a value outside the training data range?”
Read reports →“Can logistic regression (LR) produce negative predictions? If so, why?”
Read report →“Is it possible for various ML regression models to produce negative predictions when trained solely on positive values?”
Read report →“Could linear regression predict negative outcomes when the training data had no negative values?”
Read report →“What is the probability of someone ordering at Bolt, given this dataset?”
Read report →“Regarding a database containing car models and their prices, can you show each model along with its minimum price?”
Read report →Formats, difficulty and experience
Across all 29 Bolt interview reports.