Hello, assistant engineer is a junior professional title. According to the provisions of the evaluation of intermediate titles, need to meet one of the following conditions:

(1) graduated from university, engaged in professional and technical work for more than five years, and worked as an assistant for more than four years.

(2) graduated from college, engaged in professional and technical work for more than six years and served as a teaching assistant for more than four years.

(3) graduated from secondary school (high school), engaged in professional and technical work for more than ten years and served as a teaching assistant for more than four years.

(4) People with junior high school education or below must be engaged in professional and technical work for more than fifteen years and hold assistant positions for more than four years.

And you need to take the professional title English and professional title computer exams. (National Education at Your Service)