Box8 Interview Experience for Software Developer | On-Campus 2021

I am Final Year  Student of NIT Agartala. Last month BOX8 came to our college for hiring Software Developer Engineers. Students of all branches were allowed. At first, we  had to fill a form consisting of questions regarding Internships, projects, and basic HR questions. After this, there were 3 rounds.

Round 1(Coding Round): This round was conducted on HackerRank platform.

1. We were given 3 coding questions which we were supposed to solve within 1hour 30mins.
2. 2 was medium level and 1 was hard type.
3. Plagiarism was strictly monitored as many students were successfully submitted the codes but they were not selected for further rounds.
4. 25 students including me were selected.

Round 2(Technical Interview 1):  Time duration mentioned was 45 mins but my interview extended to about 60 mins.

1. First, They told me to show and explain my projects and asked a few questions about them.
2. They also asked me some questions from Node.js, React, jQuery, CSS  as I mentioned them in my resume.
3. they also asked me a puzzle. (https://www.geeksforgeeks.org/puzzle-18-torch-and-bridge/)
4. Then they asked me some questions from OOPS ( pure virtual function, operator overloading ), DBMS( ACID properties ), Computer Networks( what happens when we turn on our computer ? What happens when we enter google.com in the web browser? Network protocols ).
5. After this, they gave me 2 coding questions. Starting from Brute Force approach to optimized solution, I gave them 2 approaches and they were satisfied.
6. https://www.geeksforgeeks.org/sum-of-the-alphabetical-values-of-the-characters-of-a-string/
7. https://www.geeksforgeeks.org/reverse-words-in-a-given-string/
8. 5 out of 25 students were selected.

Round 3(Technical Interview 2):

1. This interview level was bit hard.
2. They again started asking questions about my projects and went deep into it.
3. Then, They started asking me some questions from backend like how socket works, advantages of using MongoDB over SQL, how to debug errors(they gave me some error statements).
4. they gave me some situations and asked me what I would do as a backend engineer.
5. What are sessions, cookies, web packs, APIs, and how do they work?
6. Then they asked me to write some  SQL queries testing different types of JOINs, Nested queries, and some other SQL commands.
7. Then, they asked me 2 coding questions: –
8. https://www.geeksforgeeks.org/problems/print-anagrams-together/1
9. https://www.geeksforgeeks.org/square-root-of-a-number-without-using-sqrt-function/

Lastly, All the interviewers were very much supportive. They selected 2 out of 5 for full-time opportunities.