GammaStack Interview Experience

Hello Geeks

In my college placement drive, I have given the GammaStack interview for the Solution Engineer role. So here is my interview experience about how the selection process goes and what rounds I have faced.

Recruitment Process: 1mg conducts 4 rounds to select freshers as Software engineers in their organization.

1. Coding Assessment
2. (Technical Interview 1) 45 min
3. (Technical Interview 2) 30 min
4. HR/Managerial Round

Coding Assessment:

So, the First round was a basic coding round where 3 coding questions are given. The questions are related to basic logical thinking, and balanced parenthesis. And we can do it in any programming language we like. 

After 2-3 working days, they announced the selected students who have passed the coding round for the next round. Luckily my name was also there 🙂

After a week, the technical interview was scheduled it was an online interview. This interview has 2-rounds. 

Technical Interview 1 (Online):

Firstly they asked me to introduce myself, and after that, the interviewer started to ask questions. One of them was Binary Search and for that, I used Python and created a function for the same. When I completed the code, he asked me to optimize the code and also this time, I need to do it with recursion.

After this, some questions are asked related to RDBMS, like 

• What is DBMS
• Why do we use DBMS
• What is the difference between WHERE and HAVING clause
• What are TRIGGER in RDBMS 

There were also some SQL queries like 2nd Highest Salary and to get all unique names from a table of Students

There are also some questions related to my projects and achievements.

In the end, he said that I have passed the first phase of the interview and that within 10-15mins HR will connect with me.

Technical Interview 2 (Online) :

So, after 15mins HR scheduled the meeting for the second phase of the interview. This was also a technical interview but with a little bit higher level of questions. One of them was that, the interviewer gave me a Binary Tree and asked me to give him the Postfix and Prefix of that tree. After doing this he said that if one of the parent node, not the root is deleted then what will the final tree look like? I answered confidently because I already knew about some Binary Tree concepts.

After this, some questions from SQL like the need to find the total sales of products with respect to the cities in the table. So, I have used a GROUP BY clause and written query for it.

At last, he gave me a number pattern of all prime numbers. Initially, I was confused about what kind of pattern was that and still I tried till the end. But I was unable to solve that problem.

HR/Managerial Round:

So, the interview ended and 1-2 hours later, I got a call from HR, saying that I have passed the Technical Interviews and moved to the HR round.

So around 2 days, the meeting was scheduled for my final HR round, where the HR asked about my background and previous interview experience.

Now the HR asked about the Technology, I have worked with.

And after 2-3 weeks later, I got the offer letter for the role of Solution Engineer.