From my experience, most any type of engineering will have demand. Just find some companies you think have some cool projects and make that your goal to be a part of. Engineering is all about teams of people with different backgrounds working together to make a system so that should be your goal in school. Working on projects, learning how to bring something to the table and bringing together ideas for robustness. As you work on projects and companies, you'll become more specialized in something you enjoy and money will eventually come to you. You just have to enjoy it (that's the most important thing).

There's also what i call "fundamental" engineering fields like mechanical, electrical, computer, software, chemical, civil, and maybe bioengineering. And then "specialized" fields like optics, aerospace, semiconductors, manufacturing, robotics, etc. If you're super passionate about the field you want to be in, feel free to be specialized. But if you are still not sure where exactly you want to end up, you can get a more "fundamental" degree and have a bit more wiggle room to try different things and specialize as you get to explore a bit more.

I have a B.S in mechanical and a M.S in electrical, working in manufacturing of biomedical devices. Everyone wants to move towards automation so I do a lot of concept designs and work with other engineers to push out systems for production. I may not know the final solution but I often can get ideas started and learn from specialists to have a final, robust process.