Decimal Technologies Senior Software Engineer Interview Questions and Answers

Hacker rank test. Basic coding questions on arrays, list etc.

Q1. Interactive session. Theoritical questions on oops, multithreading, springboot, java8 and few coding questions.
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Q1. Design round. Questions on system design and best practices to be followed while developing any service. Few managerial questions as well.
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Q1. Profile related questions and salary discussion.
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2 Leetcode medium - LRU Cache and sliding window question

Q1. Design Whatsapp
Ans. 
Design a messaging app like Whatsapp
• Implement end-to-end encryption for secure messaging

• Allow users to send text messages, images, videos, and documents

• Include features like group chats, voice and video calls, status updates

• Provide option for users to share their location

• Develop a user-friendly interface with customizable settings
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Q1. Basics .net , c#, sql
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Q1. Current Project Details, Roles and some technical questions too
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Q1. Package Discussion and Other basic details
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Discussion about OOPS concepts and String related program

Program on Recursion and Array

Q1. Strength and Weakness
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Q2. Reason for joining with company
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Duration was 1 hour and questions were easy to medium leetcode questions

Q1. Just go through the basics of java, they added some bugs in a functional code and you can run it in IDE and they wanted to see how you debug and approach the problem.
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Q1. It was a 1-1 round with the Principal Engineer and they asked different technical plus behavioural questions
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Good technical round, you can manage, mainly Java questions used to come

Q1. HR round is also good package discussion will happen
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Q2. Company personal so kept secret
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Q1. General question about the project, challenges, etc
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Q1. Implement tail -f command w/o use of external libraries
Ans. 
Implementing tail -f command without external libraries in Python
• Open the file in read mode

• Use a loop to continuously read new lines added to the file

• Print the new lines as they are read
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Q1. General questions on challenges, current role, production issues
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Q2. DSA Question - next warm day
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Q1. About project and technology
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Q1. What is expected Salary?
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