What are the main reasons why candidates are rejected in interviews?

The main reasons candidates are rejected in interviews are often related to several aspects:

• Lack of technical knowledge or experience. The candidate cannot answer basic questions about the language or technology, and does not understand key concepts.
• Poor problem-solving skills. Inability to approach problems logically and structurally, and to write clean and understandable code.
• Lack of understanding of architecture and development principles. For example, not knowing how patterns work, not understanding OOP principles or asynchrony.
• Communication issues. Cannot clearly explain their solutions, does not listen to the interviewer, and does not ask questions.
• Lack of motivation or incompatible culture. The candidate shows no interest in the company or project.
• Poor command of English (if required). This can hinder communication in international teams.

It is important to prepare not only technically but also to develop communication skills and understanding of the business context.