Google Data Engineer Interview Preparation Guide - Mid Level

Google's Data Engineer interview process for mid-level candidates consists of a recruiter screening, a technical phone screen, and a 4-round onsite interview loop. Each technical round lasts 45-60 minutes and evaluates proficiency in SQL, Python, system design, data architecture, data modeling, and behavioral competencies. The process emphasizes your ability to design scalable data systems, write optimized queries, model data effectively, and communicate complex technical concepts. Interviewers focus on your reasoning process and how you handle trade-offs rather than purely correct solutions.