DoorDash | Senior Data Scientist | Interview Experience
Interview Date: Not specified
Result: Not specified
Difficulty: Not specified
Interview Process
The interview consisted of two rounds, including a technical phone screen focused on coding and system design. The discussion included SQL queries and a product case analysis. The interview aimed to evaluate both technical skills and the ability to design solutions for real-world problems.
Technical Questions
- Robot Grid Distance Challenge (Dynamic Programming)
- Data Log Transmission and Storage Design (System Design)
- Rate Limiting and Log Collection Design (System Design)
- Arithmetic Expression Simplification (Stack, Math)
- Fibonacci Tree Path Calculation Using Preorder Numbering (Tree, Recursion)
- Tree Distance Sum Problem (Tree, DFS)
Tips & Insights
Be prepared to discuss your thought process during the coding challenges, and ensure you have a solid understanding of system design principles. Practice common algorithm problems and familiarize yourself with data structures relevant to the role.