No fame, no fame in the industry, and almost no one cares about part-time jobs.
Recruiting a full-time job can do anything, and the price-performance ratio between long-term use and part-time work is too poor. Moreover, if some designs are not commercialized, they will also involve commercial law, and unstable part-time designers will not be the company's first choice.
At present, designers who want to work part-time are recommended by friends or take orders privately online.