What should software testing (box) do?

The most appropriate thing is to do, technical support. That is, when customers encounter problems in using the software, you help analyze the reasons and provide solutions.

Basically, software testers are familiar with software. Can work directly without training.

Secondly, you can also be a pre-sales engineer. Help customers solve, integrate and migrate their systems.

If you have good communication skills, you can try it, product manager.

There is another kind, that is, taking an examination of Daniel, who can be a trainer. Teach young people how to take exams.

The last one is to switch to white box test or performance test. More professional than a black box. It is also very promising.

Something like that. I asked the switcher for software testing, that's all.