CoreStack Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 9 interview experiences · FREE TO READ
Which role are you interviewing for?
9 roles · 9 reportsCandidate interview experiences
First-hand accounts from people who interviewed at CoreStack.
CoreStack
System Administrator
Entry Average Negative experience No offer 2 rounds
Interview process
Recruiter call Technical screen Offer
Interview formats
Behavioral Technical
The interview process started with a phone call from HR. Then, I had a follow-up interview via Microsoft Teams with the IT Manager. After that, they told me an offer would come in two days. I messaged HR the next day for an update, and she said I'd hear back by end of day. But then, nothing. My calls and messages were ignored. Eventually, I got an automated rejection email. I don't get why they made promises and then picked someone else. It felt really unprofessional and disappointing.
Confirmed questions1 question
- Can you describe the daily duties of a system administrator?
CoreStack
Software Engineer
Entry Average Positive experience No offer 3 rounds
Interview process
Recruiter call Technical screen Technical screen
Interview formats
Technical Coding Technical
Resume Shortlist Round Pro Tip by AmbitionBox: Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression. View all Resume tips 02 Round Aptitude Test Round Normal Math Quants, Verbal and Logical ability questions. This round actually comprises of both Aptitude and Coding 03 Round Technical Round
Confirmed questions4 questions
- What do you understand by cloud and what is its importance?
- Write a Python code for the Fibonacci series.
- Python conceptual questions
CoreStack
Graduate Engineer Trainee
Entry Average Positive experience Accept offer 6 rounds
Interview process
Take home Group Technical screen Phone screen Onsite Technical screen Phone screen Offer
Interview formats
Technical Coding Group
So it was campus placement, first there was an aptitude test on the AON platform. After that a GD Round with 8 people in each panel. Then 2 Technical interviews and then the HR interview. After clearing all these rounds we were asked to come to the CoreStack company for further levels. Once we reached the company, there were 2 more rounds, one technical with the VP of the company and another with the HR head.
Confirmed questions8 questions
- He asked me about Multithreading since I had java in my resume.
- Can you explain what OOPS is?
- What are the fundamental principles of Oops?
CoreStack
Product Excellence
Entry Easy Positive experience Accept offer 3 rounds
Interview process
Technical screen Background check Background check
Interview formats
Technical Behavioral
The interview process had 3 levels. The first round involved simple Python programming tasks. The second round focused on discussing past work experience. The final round included conversations about leadership principles and other experience-based questions.
Confirmed questions6 questions
- Can you solve some simple Python programming problems?
- Tell me about your previous work experience.
- Let's discuss leadership principles.
CoreStack Interview Questions
Quoted word for word from CoreStack interview reports.
“Given an API link, retrieve the JSON data and transform it into a pandas DataFrame.”
Read reports →“Write a Python code for the Fibonacci series.”
Read reports →“What is a CIDR block, why is it used, and what is its range?”
Read reports →“What distinguishes run-time polymorphism from compile-time polymorphism?”
Read reports →“How would you convert a doubly linked list into a circular linked list, and what steps are involved?”
Read report →“What exactly is recursion?”
Read report →“Design an Employee class with fields for name, ID, address, and salary.”
Read report →“What do you understand by cloud and what is its importance?”
Read report →“Could you write a simple recursive program?”
Read report →Formats, difficulty and experience
Across all 9 CoreStack interview reports.