Google Software Engineer (Mid-Level L4) Interview Preparation Guide 2025

Google's mid-level Software Engineer (L4) interview process is a comprehensive 7-stage evaluation spanning 4-8 weeks. It consists of an initial recruiter screening, one technical phone screen, and five onsite interview rounds. The process assesses coding proficiency, system design thinking, and cultural alignment with Google's values. For mid-level candidates (L4), the focus includes strong algorithmic problem-solving (medium to hard difficulty), foundational system design concepts, and demonstrated ability to own medium-sized projects independently with cross-functional collaboration.