Capital One Machine Learning Engineer Interview Questions
Practice the exact questions companies are asking right now.
Solve matrix rotation and 1-D illumination
Question LeetCode 48. Rotate Image – rotate an n×n matrix 90° clockwise (extra space allowed). Find the point(s) with the maximum number of illuminate...
Validate virtual credit card transactions from encoded IDs
You are designing logic for a virtual credit card product. Part 1: Product reasoning Explain key benefits and drawbacks of virtual credit cards for: -...
Design model deployment, monitoring, and low-latency inference
You have trained a fraud detection model and need to productionize it. Part A: Deployment - How would you deploy an ML model to production? - What art...
Explain core ML concepts and lifecycle
You are interviewing for an ML Engineer role. Answer the following (conceptually; no code required): 1) Bias–variance tradeoff - What are bias and var...
Answer leadership scenarios with STAR
Answer the following behavioral questions with specific examples from your experience: 1. How did you challenge the status quo? 2. Describe a time you...
Return all root-to-leaf tree paths
Given the root of a binary tree, return all root-to-leaf paths. - A leaf is a node with no children. - A path should be represented as a string with n...
Maximize grid-path expression and count sawtooth subarrays
Problem 1: Maximize a valid expression along a grid path You are given an m x n grid grid. Each cell contains either: - an operator: '+' or '-', or - ...
Rotate matrix and find max lamp coverage
1) Square-matrix rotation with extra space: Given an n x n integer matrix, return a new matrix that is the 90-degree clockwise rotation of the input. ...