1. By title: directly fill in your specific title, such as "Project Manager", "Software Engineer", "Marketing Specialist" and "Human Resource Manager". This is the most direct and clear way to express your job category.
2. Refer to the industry classification: fill in according to the major categories of your industry, such as IT, Internet, finance, education, medical health, manufacturing, media, services, etc. This helps to put your work in a macro industry background.
3. Combined with functional areas: fill in the items such as technology research and development, sales and marketing, design and creativity, administration and support, production and operation, and consulting and consultancy in combination with your core responsibilities and professional skills. This method focuses on describing your job function and professional field.