Theoretically speaking, professional title refers to the title of professional technical level, ability and achievement level of professional and technical personnel, and is a sign reflecting the technical level and working ability of professional and technical personnel.
Other knowledge about professional titles.
For qualified enterprises, professional title is a necessary condition for enterprise opening, qualification rating, qualification upgrading and annual qualification examination. For an individual, a professional title is, to some extent, a symbol of his status and position in the industry. What's more, many companies have a system of promotion and salary increase.
Working in an enterprise, if you want to do advanced research projects, the person in charge has the requirements of professional titles. When job-hopping, the title level represents the starting point of an employee, with high title and high starting point and low title and low starting point.
Refer to the above? Baidu Encyclopedia-Title Evaluation