1p3a Question · Oct 2025 · USA

Payment Gateway System

Question Details

Problem Requirements Design a payment gateway system. This system must handle credit cards and bank cards. Your clients are merchants using POS (Point of Sale) machines. These machines scan cards a

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About This Question

This is a reported interview question from a databricks interview for a swe role reported in 2025.

It covers the following topics: Strings, Sql, Load Balancer, Rate Limiter, Api Design, System Design, Queue, Queue .

Difficulty rating: Easy