Google L4 Loop
Coding carries the L4 decision, and weak coding signal is the usual reason an L4 candidate is offered L3 instead. There is no dedicated design round, so code quality, edge cases, and clear communication do the work.
The Rounds
Screens
- Recruiter ConversationsOne or two short calls on your experience, the role, and location preferences.Practice Recruiter Conversations
- AssessmentsThe Google Hiring Assessment, and for some candidates a coding exercise, before interviews begin.Practice Assessments
- Technical Phone ScreenOne coding interview with one or two medium problems in an editor that does not run code. A second screen follows only when the first is borderline.Practice Technical Phone Screen
Onsite
- CodingTwo rounds of data structures and algorithms, one harder problem each with follow-ups. · 45 minPractice Coding
- Additional Coding or Role-Related KnowledgeUsually one more coding round. Infrastructure, storage, and machine learning teams may use a domain round in its place.Practice Additional Coding or Role-Related Knowledge
- Googleyness and LeadershipOne behavioral round on initiative, ownership, collaboration, and how you handled things that went wrong. · 45 minPractice Googleyness and Leadership
What the L4 Loop Weighs
- Production-quality code: clear names, handled edge cases, and a tested result.
- A brief design discussion can come up inside a coding round, so be ready to talk through structure.
- Behavioral answers weigh teamwork and growth more than formal leadership at this level.
- Specialized teams may test domain knowledge, so ask your recruiter whether your loop includes it.
Sources
Last checked Nov 2026. Loops vary by team and change over time, so confirm the details with your recruiter.