It was in 3 stages; computer test ( screening round ) followed by writing test ( script writing) and finally the interview in which general questions were asked. If they found you deserving they call for another interview round in which a topic is given for demo.
I applied through university. The process took 2 days. I interviewed at BYJU'S (Bengaluru) in Sept 2020
Interview
The interview wasn't stressful at all. It was a well-structured and organized one with questions to the point and closely related to the job description. Overall, it was an extremely pleasant experience.
Interview questions [1]
Question 1
Introduction, QA questions, Explaining a Math concept to students of two different grades
During my interview, we delved into diverse mathematical concepts, primarily from the 12th-grade JEE Advanced syllabus. The session extended for approximately one hour, featuring a mix of challenging and moderately difficult questions.
Interview questions [1]
Question 1
describe the properties of functions: "One-to-One," "Onto," "Many-to-One," and explain each concept in the context of mapping elements between the domain and codomain