I participated in three stages:

• Stage 1: Interview with an HR person. They asked basic questions, as well as more technical ones such as "How complex is HashMap search?" and "What is ACID?"

• Stage 2: Interview with a very attentive and friendly developer. I was asked to develop some simple string manipulation methods, which I did using TDD. The feedback was positive, and I advanced to Stage 3.

• Stage 3: Interview with two developers who appeared rude and disengaged. They asked about multithreading and the CAP theorem, delving into very deep, niche topics that might require extensive searching to answer. These questions seemed irrelevant to the day-to-day work of a software developer. Additionally, the interviewers were exchanging messages, and I could hear their typing and the notifications. I felt disrespected.

ACID, Multithreading, ACID, CAP Theorem