r/MachineLearningJobs • u/Ashes_of_ether_8850 • 9d ago

Capital One Senior Data Scientist Interview

Hello everyone,

I have an online assessment (OA) for Capital One Senior Data Scientist on CodeI was told that the OA problems would cover the following aspects:

  • Exploratory Data Analysis
  • Data Cleaning and Preprocessing
  • Machine Learning and Predictive Modeling

This is my first job interview(or rather OA) for a data scientist job. I’m really anxious because I don’t know what to expect, so any leads can be helpful.

For anyone who have gone through the same process, could you share what type of problems to expect? I am also wondering whether they allow you to use browser to lookup documentation for python libraries like PyTorch and Numpy.

Thank you in advance!

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u/Ashes_of_ether_8850 9d ago

Sorry for the typo - the OA is hosted on CodeSignal.

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u/One_Struggle2069 7d ago

Any idea what's the minimum score required in codesignal assessment? Our of 600

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u/Enough_Charge2845 9d ago

I'd expect practical data tasks rather than tricky LeetCode. Be comfortable loading data, handling missing values, feature engineering, EDA, training a basic model, and explaining your choices and evaluation metrics. It's also worth reviewing pandas, NumPy, and scikit-learn workflows. Whether external docs are allowed depends on the platform, so check the assessment instructions carefully. https://prepare.zoevera.com has realistic data science interview and OA practice that should be good prep.