Interview questions

Predict User Churn with Effective Modeling Techniques

Companies: TikTok

Predicting the Next Elevator Call Location

Companies: Coupang

Feature Engineering · Supervised Learning

Present and Defend Recent Research on AI Agents

Companies: Salesforce

Present and defend your data challenge end-to-end

Companies: Capital One

Prevent Vanishing Gradients in Deep Networks

Companies: Pinterest

ML Fundamentals · Neural Networks & Training

Propose an ads recommendation model for shop ads

Companies: Meta

Quant Probability Brainteasers: Pizza Bounds, Coin Scores, Ant on a Cube, Shoelace Loops, and Paint Mixing

Companies: Jane Street

QUANTITATIVE RESEARCHER

Companies: Jane Street, JPMorgan, Optiver, Point72 +1

Feature Engineering · ML Fundamentals · ML System Design · Model Evaluation

QUANTITATIVE TRADER

Companies: Jane Street, Optiver

Probability · Puzzles & Brainteasers

Ranking Content for Instagram Users: Objective, Signals and Evaluation

Companies: Datadog

AI Product Management · Ranking Models

Ranking Google Play Store ads: objective, install prediction signals, and auction

Companies: Google

AI Product Management · CTR Prediction & Ads ML

Reason About an Intercept Shift in Logistic Regression

Companies: Lyft

Model Evaluation · Regression & Statistical Modeling

Recommend Three Boards When a User Saves a Pin

Companies: Pinterest

Feature Engineering · Recommendation Systems

Reduce LLM hallucination and handle class imbalance

Companies: Cvs Health

Reduce overfitting under constraints

Companies: Boston Consulting Group

ML Fundamentals · Supervised Learning

Replace legacy ads model safely

Companies: Meta

Represent k-means as an MLP

Companies: Sealth

Research Deep Dive: Model Details, Coding Habits and Diffusion Architecture

Companies: Wells Fargo

Generative Models · Project Deep Dive

Research Project Deep Dive: Motivation, Training Pipeline, Results, and Takeaways

Companies: NVIDIA

Model Evaluation · Project Deep Dive

Resolve a Mismatch Between Regression and Classification Metrics

Companies: Capital One

Retrieval-Augmented Generation Quality: Offline and Online Evaluation Plan

Companies: Palo Alto Networks

AI Product Management · LLM Evaluation