Sarvatra Technologies Senior Software Engineer Interview Questions and Answers

One dsa question and one zero defect policy pros and cons

Q1. DSA graphs maximum nodes connections
Ans. 
The maximum number of connections in a graph is determined by the number of nodes.
• The maximum number of connections in a graph with 'n' nodes is n*(n-1)/2.

• For example, a graph with 4 nodes can have a maximum of 6 connections (4*(4-1)/2 = 6).
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Q2. .net fulkstack code review and some therptical questions
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Q1. .net multi threading async sync
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Q2. System design of current project HLD as well as LLD
Ans. 
Designed a scalable system for real-time data processing using microservices architecture
• Used microservices architecture to break down the system into smaller, independent services

• Implemented message queues like Kafka for asynchronous communication between services

• Utilized Docker and Kubernetes for containerization and orchestration

• Designed RESTful APIs for communication between services

• Used Redis for caching and Mongo
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Q1. Some technical wuestions
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Q2. Basic Manager and behaviour wuestions
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Java coding questions, basic Java questions.

Q1. Java basics questions.
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Q2. Live coding.
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Q1. Discussion on previous experience and projects.
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Q2. System design question
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Q1. Questions on SQL, Java advanced, personal projects, Java frameworks, UI based questions, Agile methodologies.
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Q2. Interview discussion with the whole team.
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Q1. Benefits discussion.
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Q2. Salary discussion.
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It was about DS Algo and Java garbage collection,multithreading

Q1. Low level design of rate limiter
Ans. 
Rate limiter is a system that controls the rate of traffic sent or received by a network interface.
• Implement a token bucket algorithm to track and limit the rate of requests

• Use a sliding window algorithm to track the number of requests within a specific time frame

• Consider using a distributed rate limiter for scalability and fault tolerance
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Q2. Springboot basics, java basics, future interfaces, basic sql queries
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Q1. Longest Consecutive Sequence
Ans. 
Find the length of the longest consecutive elements sequence in an array.
• Sort the array to ensure consecutive elements are adjacent

• Iterate through the array and keep track of the current consecutive sequence length

• Update the longest consecutive sequence length as you iterate
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Q2. Core Java Questions
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Q1. Executor Service and it's code
Ans. 
Executor Service is a framework provided by Java for managing and executing asynchronous tasks.
• Executor Service allows you to easily create and manage threads for executing tasks.

• It provides a way to control the number of threads used for executing tasks, which can help prevent resource exhaustion.

• You can submit tasks to an Executor Service using methods like execute() or submit().

• Executor Service can be used to execut...read more
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Q2. Core Java and Spring boot questions
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Q1. Design patterns
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Q2. Core Java questions
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Coding assessment in Code signal which is vedio proctored

Q1. Design a loan application system
Ans. 
Design a loan application system
• Collect applicant information such as personal details, employment history, and financial information

• Include a credit check process to assess applicant's creditworthiness

• Implement a system for loan approval/rejection based on set criteria

• Provide options for different types of loans and repayment plans

• Ensure security measures are in place to protect applicant's sensitive information
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Bank account creation, deposit money, withdraw money

Q1. Question around work experience and how a particular scenario or situation is handled
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Suggest system cost optimization based on given data set

Q1. C++ 11, 14 Deep dive, Multi-threading etc
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They asked me about a coding problem related to string parsing. It was to formate the string with brackets. I completed both parts of the solution, and asked relevant questions, but got a rejection mail.

Q1. Given a code snippet, do code review and provide all the improvements. Mainly they look at how well you can catch the logical errors over minor improvements
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