IBM interview experience Real time questions & tips from candidates to crack your interview
Staff Engineer
IBM
3 rounds | 4 Coding
problems
Selected Interview preparation journey
Journey
It was a great interview experience. I received a call from HR via Naukri.com, and subsequently, three interviews were scheduled. The interviewers were very calm and knowledgeable.
Application story
I received a call from Naukri.com, following which three rounds were scheduled: two technical rounds and a final techno-managerial round with the hiring manager.
Why selected/rejected for the role?
I performed well in all the rounds, showcasing a strong knowledge of Java coding and design patterns.
Preparation
Duration: 6 months
Topics: Coding, Java, Spring Boot, Data Structures and Algorithms (DSA), High-Level Design (HLD), Object-Oriented Programming (OOPs), Web Development, Design Patterns and their Use Cases
Tip 1: Go for CodeStudio medium problems.
Tip 2: Participate in coding competitions.
Tip 3: Go for web development.
Application process
Where: Campus
Eligibility: no
Tip 1: Use LaTeX for resume creation.
Tip 2: Use the CodeStudio URL in your resume.
Interview rounds
01
Round
Easy
Video Call
Duration60 minutes
Interview date15 Dec 2023
Coding problem2
The timing was around 2 pm, conducted via Webex for the interview. The interviewer was very good.
1. Minimum Elements
Moderate
40m average time
56% success
0/80
Asked in companies
Given a stream of numbers find the minimum number in the stream of numbers.
Problem approach
You can use the priority queue or min variable or the min stack to maintain the min value.
2. Is it a Circular Linked List?
Easy
15m average time
85% success
0/40
Asked in companies
You are given a Singly Linked List of integers. You have to find if the given linked list is circular or not.
A circular linked list is a sequence of elements in which every element has a link to its next element in the sequence and the last element has a link to the first element. This means that circular linked list is similar to the single linked list except that the last node points to the first node in the list.
Problem approach
You can use a hashmap or two pointers for this.
02
Round
Easy
Video Call
Duration60 minutes
Interview date17 Dec 2023
Coding problem1
The timing was around 4 pm. The interviewer was quite friendly and a good listener.
1. Occurrence Of Each Word
Easy
10m average time
90% success
0/40
Asked in companies
You are given a string S of words. Your task is to count the occurrence of each word present in the string S. A word is a sequence of one or more non-space characters, and there can be multiple spaces between two words, and also there can be leading or trailing spaces in a string S.
For Example:
For the given string “what we think we become”
“what”,” think”, and “become” occurs 1 time, and “we” occurs 2 times in the given string.
Problem approach
you can use hashmap and count the frequency for each word.
03
Round
Easy
Video Call
Duration60 minutes
Interview date19 Dec 2023
Coding problem1
The timing was around 2 pm. The environment was friendly, and the interviewer was good.
1. System Design
Design notification service push notification service.
Problem approach
Tip 1: Know all the building blocks of system design.
Tip 2: Learn REST API creation and database schema design.
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