Responsibilities of the librarian, especially in the science library, are constantly changing, so the librarians need to improve their education and participate in training all the time. The librarian should be a specialist in books acquisition and cataloging as well as an expert in the obtaining, selecting and disseminating of information. In this article the authors try, on the example of the Library of the Lodz University of Technology, to give an answer to a number of questions: how should librarians career path proceed? What impact has an activity of a librarian on the promotion taking into consideration the latest changes in librarian education? And what impact have regulations governing the professional status of librarians? What is more important: education or skills of employees? What criteria are to be adopted to assess, reward and motivate the library staff to a more efficient and creative work? What educational and professional skills of the employees are particularly important for the proper functioning of the library?