OPPO Interview Experience for Software Engineer

Online Test:

• Total 12 questions.
• 10 MCQs on OS, Data structures and DBMS.
• 2 coding questions.

Round 1: Coding 1 hour

He gave his introduction and then asked me for mine. Started with OS questions.

• What is a kernel?
• Difference between android OS and windows OS.
• Explain to me some concepts of OS. He was not being specific hence I explained scheduling, deadlocks, and synchronisation.
• He then asked if I could write a pseudo code and explain any one of the above concepts.
• Asked to explain threads. Difference between processes and threads. 
• Asked me if threads are so beneficial then why do we need processes?

Then he jumped to a coding question.

An image is given to me which can consist of 8 different colours denoted by 1 to 8. Each cell has a colour. I must print the colour which is occupying the most continuous area in the image.

• Once I was done with the code, he asked me to run it and wanted an explanation for the same.
• Do you have any questions for me?

Round 2: Technical and Coding 45 mins.

• He asked me for my introduction.
• I had 3 projects on my resume.
• He asked about all 3 but mostly questions were asked about my IoT project. 
• Challenges you faced.
• Is there any flaw in my project and how can it be improved?
• Can it be scaled and launched right now?
• Then he gave me a coding question.
• It was the longest palindromic substring.
• I did the code then ran and gave an explanation to which he was satisfied.
• Then he said so the location is Hyderabad are you okay with coming to Hyderabad?
• Then he asked if I have any questions for him.

I asked about his role in the organization and then I got to know that he is the fourth founding member of OPPO R&D India.