Open Financial Technologies Private Limited Backend Engineer Lead Interview Questions and Answers

Q1. General HR topics, hashmap compleity
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Q1. Consider an e-commerce site's feature that tells you by what time the parcel will reach a pincode. We discussed on architecture, whether the service that responds with the same should have the rules coupl...read more
Ans. 
The rules for parcel delivery time estimation should be decoupled from the service for better maintainability and flexibility.
• Decoupling the rules from the service allows for easier maintenance and updates without affecting the service itself.

• Separating the rules also enables reusability across different services or components.

• Using a separate rules engine or configuration file can provide flexibility to adjust the del...read more
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Q2. Classic Stock Buy and Sell once for maxium profit
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The problem involves finding the maximum profit that can be made by buying and selling a stock once.
• Iterate through the array of stock prices and keep track of the minimum price seen so far.

• Calculate the profit that can be made by selling at the current price minus the minimum price.

• Update the maximum profit if a higher profit is found.

• Return the maximum profit at the end.
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Q1. System Design question of notification on different system.
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String question which was anagram

Q1. Why do you want to change
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Q1. System Design Question
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String question of anagram

Q1. Why do you want to change
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A basic coding question was asked regarding a buisness logic.