The first round focused on LLD, where I was asked to design a variation of a coffee vending machine with add-ons, inventory management, and payment processing. I implemented all the stated requirements within the 60-minute timeframe, though the problem scope realistically warranted 90 minutes.

The interview was extended to 90 minutes as the interviewer added HLD questions midway. Despite meeting the initial requirements and handling the extended scope, I was rejected without any feedback.

The experience was disappointing due to the interviewer’s unprofessional and dismissive attitude. I would not consider applying to this company again.

LLD: Design a coffee vending machine with the ability to choose add-ons. Update inventory and handle different payment methods.