You can update your current location to Shenzhen in LinkedIn. I regularly get messages from local HRs there. Btw, I work in Bytedance (company that created Tiktok) in Shenzhen, if you are interested drop me an email at georgy [at] bytedance(dot)com

IT is one of those few sectors where it's possible to find work in Europe without the local language.

The problem for Americans (that I have talked to here) is that allegedly your IRS is absolutely ruthless at taxing you even if you decide to settle down here. I'm sure good accountants help, but some people say they are having even problems opening bank accounts. Banks are afraid or the IRS too somehow.

Otherwise it shouldn't be a big problem, I guess you do have to bring something to the table compared to the same local guy, but life's more relaxed here. If you like that, it's a good idea. If you are crazy ambitious money and career wise, nothing beats America.

The US has global taxation of income. Perhaps overseas banks don't want to deal with Americans because of the reporting requirements imposed on them?

See FATCA.