NielsenIQ Interview Experience for Full-Stack Developer

NielsenIQ visited our campus for the second time and around 500 students applied for the role.

Round 1: Aptitude Round (30 minutes): In this section, we were asked to solve 30 aptitude questions in 30 minutes. The questions were easy. I will suggest you go through some aptitude questions on work and time, percentage, ratio proportions, data interpretations, and verbal and logical reasoning.

Round 2: Online Coding Test (1 hour 30 minutes): I was asked to solve 2 questions

• A string based question was asked.
• Second question was similar to Dividing Sticks

I solved both questions. Out of 500 students, around 73 students were shortlisted based on the coding round.

Round 3: Technical Round (1 hour 15 minutes): The platform we used was Codility and was a live coding session.

• Introduce yourself
• Tell me about your projects
• How good are you at HTML and CSS?
• What are forms in HTML? Explain the syntax.

Then, I was asked to explain the code I had typed during the coding round and why I followed the particular method to solve the questions. I was also asked to optimize the same, if possible. Once this was over, I was given a few simple coding questions to solve on-screen and explain the output.

• Given an array, move all values of k (given digit) to the end of the array: https://www.geeksforgeeks.org/move-all-values-equal-to-k-to-the-end-of-the-array/
• Remove duplicates from a string: https://www.geeksforgeeks.org/remove-duplicates-from-a-given-string/
• Reverse a string with and without recursion. I gave all possible solutions: https://www.geeksforgeeks.org/program-reverse-string-iterative-recursive/
• Any sorting technique and its time complexity.
• Now that you have sorted the array, remove the duplicates from the array: https://www.geeksforgeeks.org/remove-duplicates-sorted-array/

After solving them, I was asked some behavioral questions. I also had some projects on deep learning, so I was asked to explain them as well.

• Have you ever faced conflicts with your teammates? If so how did you try to resolve them?
• If you are given any other role other than the one mentioned in the job description, will you be able to work?
• About my current final semester project.
• Rate yourself on all the technical skills mentioned in your resume.
• Are you a team player?

Then, I was asked to paste my Github profile link on the screen. The next day I got a call telling me I had cleared the coding round and was asked to fix a time slot for the next one.

Round 4: Technical + HR (40 minutes): The interviewer asked me to give a small introduction about myself. We had a smooth conversation for around 5 minutes.

• Give me a brief explanation about your internships.
• Do you know SQL?
• Tell me about SQL constraints. What are check constraints?
• Why do we need Joins?
• Do you know OOPS? Explain.
• Static and Run-time polymorphism.
• If you have two functions with the same name and parameters with the same return type, will the code work. Why?
• Explain data structures and the difference between arrays and linked lists.
• How are linked lists better than arrays?
• Do you like puzzles? Measure 4L using a 3L and 5L bucket. 
• Do you know Networks? Explain some protocols.
• Why NielsenIQ?
• Your resume says you have experience with front-end technologies. If I give you a role with python as a backend developer, will you be able to work?
• What do you prefer, a job or higher education? Why?
• What are your plans for the future?
• Do you have any questions for me?

I might have missed a few questions, but I tried my best to put down most of them. After this, we had to wait a few days to get the results. The selected students were mailed directly and 12 Students got in. Fortunately, I was one of them.