Well, Ilikeponies555, this is the Non-Binary section and you do not state your genetic gender. If you are genetically female I don't know of any business that has a problem with hair length. If you are genetically male, there is still some resistance out there, but the companies you mentioned shouldn't be a problem if you live in the United States. Some years ago the US government passed legislation that forces all companies doing business across state lines to not force discriminatory rules between how male and female employees. Simply stated, if a nationwide company in the US allows females to wear long hair, they have to allow males to as well.
I live in a major metropolitan area, though, and, while most men wear short hair anyway, few businesses seem to restrict hair length of male employees. I think about the only situations that might be an issue are things like sales situations that require formal dress and such.
Keep your hair neat, well cut and well groomed. One thing I learned from decades of being a long haired male is that people are more accepting of you when you look good-- long haired or not. Wear a nice long style even if it's a style normally worn by women. If you look really good, your probably be OK.