I worked at a company that made CAD/CAM software and had to make extensive use of calculus / linear algebra / computational geometry. Depending on what kind of

I worked at a company that made CAD/CAM software and had to make extensive use of calculus / linear algebra / computational geometry. Depending on what kind of math you like doing / using, that might be an industry worth looking into. Though it was a software development job, so I'm not sure if that aligns with your interests either.