Intercontinental Exchange Senior Software Engineer Interview Questions and Answers for Experienced

Q1. Explain Concurrency
Ans. 
Concurrency is the ability of a system to execute multiple tasks simultaneously.
• Concurrency allows multiple tasks to run concurrently, improving performance and efficiency.

• Concurrency can be achieved through multithreading or multiprocessing.

• Example: A web server handling multiple requests simultaneously using multithreading.
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Q2. Explain Acid principles
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ACID principles are a set of properties that guarantee database transactions are processed reliably.
• Atomicity: Transactions are all or nothing. If one part of the transaction fails, the entire transaction is rolled back.

• Consistency: Transactions bring the database from one valid state to another. All constraints are satisfied.

• Isolation: Transactions are isolated from each other until they are completed.

• Durability: Once...read more
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Implement thread safe load balancer.
focus on input validations and cover all corner cases in tests

Q1. Explain the last technically challenging topic that you have worked on. The engineering manager is only interested in self boasting. Without even trying to understand the entire problem statement, they try...read more
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Online assesment . 5 coding question in 90 minutes

Hackerrank coding test with paired screen. They give problem we have to write the logic

Again hacker rank code pair. the give problem and have to write logic. this round with staff senior engineer

Online test link given data structures were asked, array problem and string problem
Likewise Double Linked List was also asked

Q1. Spring boot API endpoint description
Ans. 
Spring Boot API endpoint is a URL that exposes the functionality of a web service.
• API endpoints are the entry points for the client to access the server's resources.

• Spring Boot provides a simple and easy way to create RESTful APIs.

• Endpoints can be secured using Spring Security.

• Endpoints can be documented using Swagger or Spring REST Docs.

• Examples: /users, /products, /orders
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Q2. CI CD pipeline, Docker Kubernetes
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Hacker rank test based on string manipulation questions

Q1. 2nd round will be technical
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Q2. Yes mostly coding and DS questions you can also expect one logical IQ question
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Q1. This round was mostly behavioural and culture fit round with Manager
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Q1. Salary negotiation
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Q2. Notice period discussions
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I was asked two DSA questions and duration was of one hour.
1. Calculate Sum of edges of LinkedList
2. Given a list of numbers, find out all the pythagorean triplets.

This was also a DSA round for 1 hour and expected to solve two problems (Medium)

This was a system design round for one hour

Q1. Detailed flow from FE to BE to db.
Ans. 
The flow of data from the front end to the back end to the database.
• Front end sends a request to the back end server.

• Back end processes the request and interacts with the database.

• Database retrieves or updates the data and sends it back to the back end.

• Back end sends the response to the front end for display.
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Q1. How to pass input field values from form to db. How to make code testable/loosely coupled.
Ans. 
Pass input field values from form to db by using a data access layer and dependency injection for testability.
• Create a data access layer to handle interactions with the database.

• Use parameterized queries to prevent SQL injection.

• Implement dependency injection to decouple the code and make it testable.

• Mock the data access layer in unit tests to isolate database interactions.

• Use interfaces to define contracts between com
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Q1. Salary discussion
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