## Preparation Tips & Key Takeaways ### What I Learned - The coding round required building a functional system from scratch, so strong practical skills in a framework like Spring Boot are crucial. - System design knowledge is important, especially for classic...
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## Preparation Tips & Key Takeaways ### What I Learned - Debugging skills are crucial, especially under pressure during a live coding session. - Thoroughly test your code with various inputs to catch potential issues before running it during the interview. ###...
I interviewed for a Payment PM role. Rounds 2 and 3 involved a pre-prepared case study (solving a batch processing problem). Key takeaways: - I needed to present a user journey, potential solutions, and considerations across interconnected platforms. - Ripplin...
The system design question focused on building a News Aggregator Service, similar to Google News. The functional requirements were: - Users can subscribe to specific topics. - Users can subscribe to specific publishers. - The system provides general top storie...
The coding question was to implement an expense and rule system. I finished the first part of the problem within the time limit and my code could run correctly for all the test cases. However, I didn't have time to do the second part.
I had a phone screen interview that lasted an hour. After introductions and a Q&A, I had about 40 minutes to work on the coding question, which involved designing a simplified Poker game using object-oriented principles. I had seen this problem before in inter...
The focus of the interview was on designing a metrics monitoring system, with a particular emphasis on the SDK API design. The interviewer probed deeply into the underlying mechanisms of time series databases and the reasoning behind their performance. I had t...
## Preparation Tips & Key Takeaways ### What I Learned - Understanding the nuances of the problem is crucial; in this case, distinguishing between maximizing drivers and maximizing deliveries. - Being prepared to discuss optimization strategies is essential, e...
The coding question I received was: You're given a list of DoorDash employees who make a certain amount per hour, along with how long they work. Part 1: Create a function to compute the total amount of money all the dashers make. Part 2: You now want to pay th...
The interview involved designing an in-memory service for a food delivery app to calculate driver payments and display live data. The system needed to handle tens of thousands of drivers, each making hundreds of deliveries per week, with delivery data arriving...
