Of course, you can't work in the name of tourism. It's illegal anywhere. Even if you don't get caught, what if you can only sign for seven days at a time? (Unless it is a special industry)

If you go by yourself, you can only get a blue card (with restrictions) if you have connections here and a work unit is willing to invite you. Then you take an invitation letter or something to the Public Security Bureau to apply for a business visa (check with the Public Security Bureau for specific information), and then go to the Immigration Bureau to get a blue card when you arrive in Macau. The whole process will take at least a few months.

At present, the Macao government has very strict restrictions, and it is difficult for even senior technicians to apply.