The interview process was good and very well arranged.

Had two interviews:

1. A phone interview.
2. An onsite interview.

Phone interview: It was quite technical. The interviewer covered a lot of ground in a short amount of time. Topics included core Java, JavaScript, Spring, basic algorithms, Agile, and questions based on technologies mentioned in the resume. The interview started with basic questions and then expanded in many directions. If you have a good depth of knowledge in core Java concepts, the interview should be smooth sailing.

Onsite interview: This interview had two rounds and was primarily behavioral. One round was known as a "cognitive interview." This was essentially to understand how one approaches a solution by grasping the problem, rather than focusing on the solution itself. Typically, a problem scenario is presented, and they want to observe how you ask questions about the problem and what factors you consider before arriving at a solution. The other round was called a "resume review," but it focused more on basic experience, future aspirations, and "why Amex" type questions.

Overall, the interview was easy, and results were delivered very quickly.

Questions known as "Guesstimates" are usually asked for consultant-type roles. They ask them to understand your problem-solving skills. Read more about "Fermi problems" to understand what they mean.