SirionLabs Senior Software Engineer Interview Questions and Answers

Q1. Java,oop, microservice, JPA
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Q2. Spring boot , MySQL
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Q1. Java, spring boot
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Q2. Microservice, rest api
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Q1. Reverse link list
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Q2. Count number of digits
Ans. 
Count the number of digits in a given string
• Iterate through each character in the string

• Check if the character is a digit using isdigit() function

• Increment a counter if the character is a digit

• Return the final count of digits
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Q1. What is Apache Kafka?
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Apache Kafka is a distributed streaming platform used for building real-time data pipelines and streaming applications.
• Apache Kafka is designed to handle high-throughput, fault-tolerant, and scalable real-time data streams.

• It allows for the publishing and subscribing to streams of records, similar to a message queue.

• Kafka is often used for log aggregation, stream processing, event sourcing, and real-time analytics.

• It p...read more
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Q1. How do you manage stress?
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It started with basic introduction, than move ahead with Java, Spring boot question in the end, he asked one leetcode medium question based on DP . Ques : Find a minimum number of jumps required to reach the end of the array, and each index , it can jump arr[index] time at max, you need to calculate minimum number of steps required to reach at the end.

Hacker rank coding tesr

Q1. Relational database queries
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Q2. Coding Question on JavaScript
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Q1. Word formation Algorithm question
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Q2. Architecture of project.
Ans. 
The architecture of the project is based on microservices with a containerized approach using Docker and Kubernetes.
• Utilizes microservices architecture for scalability and flexibility

• Containerized approach using Docker for easy deployment and management

• Orchestrated with Kubernetes for automated scaling and monitoring
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They do a technical mock test

Q1. Oop Concept questions
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Q2. Database related Questions
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Q3. SVN related Questions
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Q1. How to check a number is power of 2
Ans. 
To check if a number is a power of 2, we can use bitwise operations.
• A power of 2 has only one bit set to 1, so we can use the bitwise AND operator to check if the number is a power of 2.

• If n is a power of 2, then n & (n-1) will be 0.

• For example, 8 (1000 in binary) is a power of 2, and 8 & 7 (0111 in binary) is 0.
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Q2. Sort a stack without using another data structure
Ans. 
Sort a stack without using another data structure
• Use recursion to pop the top element and insert it at the bottom of the remaining stack

• Repeat until the stack is sorted in ascending order

• Time complexity: O(n^2), space complexity: O(n) due to recursion
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Q3. Check weather array have continuous increasing than decreasing value
Ans. 
Check if array has continuous increasing and decreasing values
• Loop through the array and check if each element is greater than the previous one

• Once you find the maximum element, check if the remaining elements are in decreasing order

• If yes, return true else false
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Q1. Design a cricinfo (LLD)
Ans. 
Design a cricinfo (LLD)
• Identify the entities: players, teams, matches, scorecards, tournaments, etc.

• Define the relationships between entities

• Create a database schema to store the data

• Implement APIs to fetch and update data

• Design a UI to display the information

• Consider scalability and performance

• Ensure data security and privacy
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Q1. Share details of your previous job.
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Q2. Why should we hire you?
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Q3. What are your strengths and weaknesses?
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Q1. Core and Advance concepts of Java
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Q1. Mainly on mutltithrerading concepts and previous experience on projects.
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Q1. About projects and scenarios based questions.
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Q1. About Salary negotiation and final round
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