Well I don't know why they didn't ask any questions regarding front end . The guy came asked 2-3 questions on react and then started giving coding problems. And I had the whole back end + front end skills like react , nodejs , express.js , HTML5 , CSS , JS , mern stack on my resume but nah not a single questions related to these . No questions on my projects that were related to front end and back-end. So If you wanna crack the interview for front end role just be good at programming and read the react interview questions from interview bit .