First try the official route, which is suitable for all kinds of market trading software companies such as stocks, futures and foreign exchange. To put it bluntly, it is to do intelligent or programmed trading software. Or find a securities company (futures company) to be an IT post, and many companies will put you into the software R&D team according to your specialty. This kind of team is much less stressful than that kind of professional software development company, and it is easier for you to play freely.

If you can't find an official one, you can find a market development post privately, and then spend all your spare time studying intelligent software. The development of intelligent software is a way. Although China has started, it is far from mature. There is a great market demand in this area. I recommend you to work hard in this direction.

I wish you success!