How does ps design job advertisements?

You can find some information on the Internet.

Fonts can also be downloaded from the Internet and put into ps to modify the effect you want.

Then beautify it by color matching and add recruitment information. What size do you want to make? I made a 60* 160 one before, using a gradient, and the color is crimson-red-crimson. Then find some decorative patterns and a special font! Almost there! Oh, I just started to enter this industry, it won't be too complicated!