Bread Financial Senior Software Engineer Interview Questions and Answers

Q1. Machine round 3 programming questions and one sql question.
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Q2. SOLID Principles
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Round duration - 90 Minutes
Round difficulty - Medium

Timing - Flexible, can take any time as per convenience.
Environment was great.

Q1. 
Reverse Alternate K Nodes Problem Statement
You are given a singly linked list of integers along with a positive integer 'K'. The task is to modify the linked list by reversing every alternate 'K' nodes o...read more
Ans. 
The task is to modify a singly linked list by reversing every alternate 'K' nodes of the linked list.
• Iterate through the linked list in groups of size K, reverse every alternate group

• Handle cases where the number of remaining nodes is less than K

• Update the pointers accordingly to reverse the nodes in the linked list
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Round duration - 60 Minutes
Round difficulty - Easy

Timing - around 12pm
It was a call on Google meet.
Interviewer was friendly

Q1. 
Search In Rotated Sorted Array Problem Statement
Given a sorted array of distinct integers that has been rotated clockwise by an unknown amount, you need to search for a specified integer in the array. Fo...read more
Ans. 
Implement a search function to find a specified integer in a rotated sorted array with O(logN) time complexity.
• Implement a binary search algorithm to efficiently search for the target integer.

• Handle the rotation of the array by finding the pivot point first.

• Return the index of the target integer if found, else return -1.

• Ensure the time complexity of the search function is O(logN) for each query.
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Round duration - 60 Minutes
Round difficulty - Medium

Managerial round. Mostly around system design

Q1. Design a search service that provides relevant results for travel.
Ans. 
Design a search service for travel with relevant results.
• Utilize user input to determine search criteria (destination, dates, budget, etc.)

• Incorporate filters for specific preferences (e.g. hotel ratings, airline preferences)

• Implement algorithms to prioritize results based on relevance and user behavior

• Integrate with external APIs for real-time availability and pricing information
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Q1. Oops concepts explanation with framework
Ans. 
Explanation of OOP concepts with framework
• OOP concepts include encapsulation, inheritance, and polymorphism

• Encapsulation allows bundling of data and methods into a single unit

• Inheritance enables the creation of new classes based on existing ones

• Polymorphism allows objects of different classes to be treated as the same type

• Frameworks provide a structure and set of tools for developing software applications

• Frameworks oft...read more
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Q1. Framework explantion and implementation
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Q1. Techno managerial questions asked
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Q1. DS questions around array and DP
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Q2. Array manipulation, dynamic programming
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Q3. Segregation of number in an array
Ans. 
Segregate numbers in an array of strings based on odd/even
• Iterate through the array and separate odd and even numbers into two separate arrays

• Use parseInt() to convert strings to numbers for comparison

• Return the two arrays of odd and even numbers
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Q4. React life cycle
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Q5. Promise and async await
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Q1. Leetcode 2 sum question and simple selenium question like taking a screenshot
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Easy to medium | LC problem on array strings

Q1. Easy to medium | Java concept
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Q1. Design round | Design a notification service
Ans. 
Design a notification service for sending real-time alerts to users.
• Use a scalable messaging system like Kafka or RabbitMQ to handle high volume of notifications.

• Implement a user preference system to allow users to choose their preferred notification channels (email, SMS, push notifications, etc).

• Include a scheduling feature to send notifications at specific times or intervals.

• Ensure notifications are personalized and ...read more
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Q1. HR for salary negotiation
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The first round was a hackerrank dsa round where i was asked below problems from difficulty easy to medium.
1. Max even sum subseqynce
2.Find length of longest subsequnce of one string which is substring of another

Q1. What is kafka and your use case where you have used
Ans. 
Kafka is a distributed streaming platform used for building real-time data pipelines and streaming applications.
• Kafka is used for real-time data processing, messaging, and event streaming.

• It provides high-throughput, fault-tolerant, and scalable messaging system.

• Example use case: Implementing a real-time analytics dashboard for monitoring website traffic.
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Q2. Basic Redis questions
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Q3. Rain water trapping dsa problem
Ans. 
Rain water trapping problem involves calculating the amount of rainwater that can be trapped between buildings.
• Calculate the maximum height of water that can be trapped at each index

• Calculate the water trapped at each index by subtracting the height of the building at that index

• Sum up the water trapped at each index to get the total amount of rainwater trapped
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Q4. Basiv SQL queries and indexes
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