I would recommend you go to your local meetups, network at fintech events local hacker meetups. This will be where you may find opportunities to dig more about the skill sets needed for your favorite industry tools for a target segment of the tech industry. Then you can talk to them face to face to get a better understanding of the types of people working in fintech. It would suck to work hard and jump to a career known for averaging 50 hour / week with people you hate.
Another thing about Computer Science is that regular hours are not guaranteed, many teams underestimate and bugs crop up, it is the reality of production coding. It is also harder to detach from coding as you will go home thinking about "that bug" for a few hours. It is one thing to code 1 / 2 hours for a day or two. It is another when your promotion metric is based on your ability to focus for 4+ hours 5 days a week. So I would look at a exercises to extend your focused concentration time. Side projects (build an app), finding more work to automate, setting up your own wordpress blog are good endeavors to work on.
If you don't plan on getting a degree, instead of starting with all the fancy data structures and algorithms, the one skill I would look for is: "given a problem you never seen before, can you do an adequate job of figuring out the key parts, google possible solutions and execute something half decent?"
So, e.g. You need a blog, can you figure out how to setup Wordpress, how to look for a hosting provider, how to setup a custom theme?
e.g. #2 You want to automate reconciling your spending reports generated as 2 different excels, how do you figure out when a new excel is generated? How can you run a script to merge the results when a new excel file is found?
Once you have a portfolio of completed side projects, it'll help build up your confidence in tackling novel problems, and you'll get comfortable dealing with the crap ton of new things to learn. You'll end up learning a lot of random things trying to fit into a difference job descriptions, many of them you might never use again, but once you hit a combo of stuff you did that a job needs, you'll be able to capitalize and get your foot in the door.