Waymo interview questions

1. 1 Architect scalable data pipelines for handling telemetry from thousands of vehicles in near real time. Reported at Waymo
2. 2 Assess schema design choices for multi-team ML usability at Waymo. Reported at Waymo
3. 3 Can you explain SQL joins? Reported at Waymo
4. 4 Describe a project with the biggest impact, longest duration, and most cross-team coordination, explaining both the technical architecture and the organizational challenges. Reported at Waymo
5. 5 Design a Databricks-native real-time log pipeline processing 1.5-3 PB/day with sub-90-second latency, replayability, and strong data quality controls. Reported at Waymo
6. 6 Design a system centered on ML data infrastructure or simulation data APIs. Reported at Waymo
7. 7 Design systems that ingest, validate, and store 40Gbit/s of incoming sensor data per vehicle. Reported at Waymo
8. 8 Discuss technical conflict resolution, iterating under pressure, and contributing to safety-critical systems. Reported at Waymo
9. 9 Evaluate join optimization strategies for large-scale SQL workloads. Reported at Waymo
10. 10 Explain how you improved a slow ETL pipeline on multi-terabyte data, including bottleneck analysis, tuning choices, and validation. Reported at Waymo
11. 11 Give an example of a project where you had to balance the need for rapid iteration with the requirement for robust technical debt management. Reported at Waymo
12. 12 How do you collaborate across teams like ML, Mapping, and Infrastructure? Reported at Waymo
13. 13 How do you handle back-pressure in a data pipeline? Reported at Waymo
14. 14 How do you influence teams that have a dependency on your work but don't report to you? Reported at Waymo
15. 15 How would you optimize a SQL query? Reported at Waymo
16. 16 Optimize Joins on Massive Tables. Reported at Waymo
17. 17 Optimize Slow SQL Queries. Reported at Waymo
18. 18 Solve a BFS-based problem involving simulating an organizational hierarchy: model it as a tree, then answer queries like 'find all direct reports' and 'find everyone in a department.' Reported at Waymo
19. 19 Solve technical coding problems involving BFS/DFS, matrix transformations, and performance-sensitive string manipulation, often emulating real-world fleet data processing tasks. Reported at Waymo
20. 20 What is a fact table? What is a dimension table? Reported at Waymo
22. 21 What is your approach for maintaining data quality and integrity across ETL pipelines? Reported at Waymo
23. 22 Write multi-join queries, optimize aggregations, and reason through partitioning strategies in datasets exceeding billions of rows. Reported at Waymo
24. 23 Create a workflow engine for distributed environments with real-time execution. Typical for the role
25. 24 Design a content moderation system. Typical for the role
26. 25 Design a system for hotel bookings. Typical for the role
27. 26 Develop a platform for real-time editing and collaboration. Typical for the role
28. 27 Explain the medallion architecture. Typical for the role
29. 28 In Azure what kind of serverless architecture used in your projects? Typical for the role
30. 29 Outline the key components of a robust session handling system for web applications. Typical for the role
31. 30 What is your data architecture experience? Can you describe a few projects you've worked on? Typical for the role
32. 31 What is your experience with data modelling? Typical for the role
33. 32 Why does an OLAP architecture typically rely on a star or snowflake schema while an OLTP system relies on 3rd Normal Form? Typical for the role

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