Intercontinental Exchange Senior Software Engineer Interview Questions and Answers

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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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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Q1. Given a grid containing 0s and 1s and source row and column, in how many ways, could we reach form source to target. ( 1's represents a blockade and 0's represent accessable points)
Ans. 
Count the number of ways to reach target from source in a grid with 0s and 1s.
• Use dynamic programming to solve the problem efficiently.

• Traverse the grid using DFS or BFS to count the number of ways.

• Consider edge cases like when source and target are the same or when there is no path.

• Example: Given grid = [[0,0,0],[0,1,0],[0,0,0]], source = (0,0), target = (2,2), answer is 2.

• Example: Given grid = [[0,1],[0,0]], source =
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Q2. 1. High Level System Design -> Design Uber like Service. Follow up -> What would be your tech stack for designing such a service to make sure it could scale when needed.
Ans. 
Tech stack for designing a scalable Uber-like service.
• Use microservices architecture for scalability and fault tolerance.

• Choose a cloud provider with auto-scaling capabilities.

• Use a load balancer to distribute traffic across multiple instances.

• Use a NoSQL database for high availability and scalability.

• Use message queues for asynchronous communication between services.

• Use containerization for easy deployment and managem...read more
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Q3. (HLD) -> Design a service which combines multiple sources of data/documentation and aggregates it such that all info is available centrally.
Ans. 
Design a service to aggregate multiple sources of data/documentation centrally.
• Identify sources of data/documentation

• Determine data aggregation method

• Design a centralized database to store aggregated data

• Develop a user-friendly interface to access the data

• Ensure data security and privacy
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Q4. (Behavioral) Describe a scenario in which you went above and beyond your regular assigned tasks and responsibilities to help out the Team/Colleague/Organization.
Ans. 
I took on additional responsibilities to help a colleague with a tight deadline.
• Assisted a colleague with a project that had a tight deadline

• Took on additional tasks outside of my regular responsibilities

• Worked extra hours to ensure the project was completed on time

• Provided guidance and support to the colleague throughout the project
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Implement thread safe load balancer.
focus on input validations and cover all corner cases in tests

Q1. Current company architecture and what was your role
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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
Ans. 
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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DSA round on graph . String questions were asked