Going into STEM, especially engineering, is a great way to get a job. You'll find so many great options out there. You are trained with a career in mind. Many universities now provide extensive scholarships to get more women into tech programs (I benefited from one).
I found that hiring is predominantly based on skill set/qualifications. (Go kick some butt in school, and show the boys what equality looks like). If you work in hardware design, you have to outshine the guys who grew up with a cool dad with a machine shop--because there is an unstated cultural belief that women aren't machinists/tinkerers. (The master cnc user and shop manager at my current place is an amazing female engineer). Start making a portfolio (stack of pictures) of the cool projects you work on for fun, school, and jobs. Anything that shows hands-on skills will give you an edge.
Getting your work noticed and getting promoted can be hard. Sometimes I have to do more than 100% effort, which is annoying. You need a good manager, which aren't common (we tend to promote engineers to become managers, and they don't always have the people skills...nerds, go figure). Sexism will happen--document everything, get a boss to back you up, and find a good therapist. Work with good people and learn all you can. Then go work at other places with good people.
There are lots if job options in STEM. Only work at places that deserve to have you on their team. :)