Mid-Level Data Scientist Interview Preparation Guide (FAANG Standard)

Mid-level data scientist interviews at FAANG companies are comprehensive, typically spanning 4-6 weeks of preparation. They assess technical depth (SQL, Python, Statistics, Machine Learning), product intuition (A/B testing, metrics, business sense), and behavioral competencies (communication, collaboration, leadership). Most interviews consist of 6 rounds conducted over 1-2 days of onsite or extended virtual interviews, with each round testing distinct competencies to ensure candidates can own projects end-to-end, mentor junior colleagues, and make data-driven decisions.