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IBM Backend Developer Interview Questions and Answers
7 Interview questions
Microservices in Spring Boot communicate via REST, messaging, or gRPC, enabling scalable and decoupled architectures.
RESTful APIs: Microservices expose endpoints using HTTP methods (GET, POST, PUT, DELETE). Example: User service and Order service communicate via REST.
Message Brokers: Services can communicate asynchronously using message brokers like RabbitMQ or Kafka. Example: Order service sends a message to Inve...
Class inheritance allows a subclass to inherit properties and methods from a superclass.
Subclass can access all public and protected members of superclass.
Subclass can override methods of superclass.
Example: Animal class can be superclass, with Dog and Cat classes as subclasses inheriting properties and methods.
A translation unit is a source file along with all the headers and source files included in it.
Translation unit is the smallest unit of compilation in C++.
It consists of a source file and all the header files and source files included in it.
Each translation unit is compiled separately before being linked together.
Translation units help in organizing and modularizing code.
Example: If a.cpp includes b.h and c.cpp, t...
Structure padding is the process of adding empty bytes to a structure to align its data members on memory boundaries.
Padding is added to ensure that each data member in a structure starts at a memory address that is a multiple of its size.
Padding is necessary for performance optimization and to prevent memory access violations.
For example, if a structure has a char followed by an int, padding may be added between ...
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A loop can be found by iterating over a collection of elements repeatedly until a certain condition is met.
Iterate over a collection of elements using for loop, while loop, or foreach loop
Check for a condition to determine when to exit the loop
Examples: for(int i=0; i
Asynchronous and synchronous are programming concepts that determine how tasks are executed.
Synchronous tasks are executed one after the other, in a sequential manner.
Asynchronous tasks can be executed simultaneously, without waiting for the previous task to complete.
Synchronous tasks are easier to understand and debug, while asynchronous tasks are more efficient and can improve performance.
Examples of synchronous...
Software development lifestyle involves continuous learning, problem-solving, collaboration, and adapting to new technologies.
Continuous learning is essential to stay updated with new technologies and best practices.
Problem-solving skills are crucial for debugging and finding efficient solutions to complex problems.
Collaboration with team members helps in sharing knowledge, brainstorming ideas, and improving code ...
IBM Backend Developer Interview Experiences
18 interviews found
Anonymous
Selected
I was asked a problem around Edit distance and how to compute a average for a stream of data.
I applied via Naukri.com and was interviewed in Jun 2024. There was 1 interview round.
(3 Questions)
- Q1. Lifestyle of software development
- Ans.
Software development lifestyle involves continuous learning, problem-solving, collaboration, and adapting to new technologies.
Continuous learning is essential to stay updated with new technologies and best practices.
Problem-solving skills are crucial for debugging and finding efficient solutions to complex problems.
Collaboration with team members helps in sharing knowledge, brainstorming ideas, and improving code quali...
- Q2. Real time example of class inheritance
- Ans.
Class inheritance allows a subclass to inherit properties and methods from a superclass.
Subclass can access all public and protected members of superclass.
Subclass can override methods of superclass.
Example: Animal class can be superclass, with Dog and Cat classes as subclasses inheriting properties and methods.
- Q3. Agile methodologies and waterfall methodology
Skills evaluated in this interview
saffan m s
(1 Question)
- Q1. Java, spring boot
(1 Question)
- Q1. Java, Spring boot , coding
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. What is your current CTC
- Q2. Why are you work here
Minal Shankarrao Bitne
(1 Question)
- Q1. Java scenario based questions
(2 Questions)
- Q1. What is structure padding ?
- Ans.
Structure padding is the process of adding empty bytes to a structure to align its data members on memory boundaries.
Padding is added to ensure that each data member in a structure starts at a memory address that is a multiple of its size.
Padding is necessary for performance optimization and to prevent memory access violations.
For example, if a structure has a char followed by an int, padding may be added between them ...
- Q2. What is translation unit ?
- Ans.
A translation unit is a source file along with all the headers and source files included in it.
Translation unit is the smallest unit of compilation in C++.
It consists of a source file and all the header files and source files included in it.
Each translation unit is compiled separately before being linked together.
Translation units help in organizing and modularizing code.
Example: If a.cpp includes b.h and c.cpp, then t...
(1 Question)
- Q1. Basic Coding questions
Interview Preparation Tips
Skills evaluated in this interview
I applied via Approached by Company and was interviewed in Apr 2024. There were 2 interview rounds.
(1 Question)
- Q1. All the OOPs concepts
(1 Question)
- Q1. Scrum & Agile Methodologies questions on previous projects
Interview Preparation Tips
Initially HR quoted a CTC and after me attending 3 rounds of interviewes they said they can't offer the quoted CTC.
So my suggestion is to get the things clear with the first call itself so that you can focus on better things
Selected
I applied via Referral and was interviewed in Apr 2024. There were 2 interview rounds.
2 DSA questions from leetcode
(2 Questions)
- Q1. Valid sudoko from leetcode
- Q2. DBMS Related primary key and cadidate key
(1 Question)
- Q1. Technical discussions about the current work and projects
Guthi Varalakshmi
Selected
I applied via Naukri.com and was interviewed in Jan 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Bit manipulation
- Q2. Experience questions
(2 Questions)
- Q1. How do u find a loop
- Ans.
A loop can be found by iterating over a collection of elements repeatedly until a certain condition is met.
Iterate over a collection of elements using for loop, while loop, or foreach loop
Check for a condition to determine when to exit the loop
Examples: for(int i=0; i
- Q2. How do u know know merge LL
- Ans.
Merge LL refers to merging two linked lists into a single sorted linked list.
Use a dummy node to start the merged list
Compare the values of the nodes from both lists and add the smaller one to the merged list
Move the pointer of the merged list and the list from which the node was added
(2 Questions)
- Q1. Experience discussion
- Q2. Project discussion
Skills evaluated in this interview
IBM Interview FAQs
The duration of IBM Backend Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
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Overall Interview Experience Rating
based on 19 interview experiences
Difficulty level
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IBM Backend Developer Reviews and Ratings
based on 25 reviews
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