Hello everyone. Would you like to learn about the technical questions asked by small, large and medium-sized companies working in different engineering sectors to the applicant candidates in the recruitment interviews, see the answers and discuss them? However, would you like to put yourself one step ahead of other candidates by seeing how you should behave in interviews, what the other party pays attention to in you, and what other questions you may encounter besides technical issues? You can achieve this with this training set. In this content (2015-2023), which is the product of a nearly 8-year compilation, companies are divided into categories as construction and manufacturing, materials science and machine theory, hydraulic and pneumatic systems, thermodynamics and energy, according to the fields they work in. Also, different questions that are of great importance among you and that your knowledge can make a very important contribution to you, and very important technical terms that will be useful to you are also shared in this content. In addition, commonly used technical concepts and their abbreviations are clearly explained in the content and they are added to the content. Visuals were used in order to strengthen the understanding in the necessary questions. Again, for the same purpose, tables, graphs and diagrams were also used, and if necessary, video lectures were also made. We wish you a good and successful business life and that our work will be beneficial for you, and we wish you success in your future life.