## 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...

I was asked to design a system that can evaluate millions of transactions daily for fraud in real-time. The system needs to decide to approve, flag, or block a transaction within a 50ms latency budget. It should handle 10,000+ requests per second and allow sea...

I was asked to design a Tic-Tac-Toe system. I implemented a solution but was rejected. The interviewer advised that I needed to communicate my ideas and implementation details carefully before writing code. The interviewer didn't ask me to go through test case...

I interviewed for a Senior SDE role at Stripe and was rejected two weeks after the virtual onsite. **Phone Screen:** The phone screen involved a classic dataset validation problem. The prompt was very long, and I almost ran out of time to read it. Thankfully,...

I need to implement a function that determines the status of a board game based on a list of moves and the size of the board. The function should run through the list of moves and return one of the following game statuses: 'in progress', 'player 1 is the winne...