I think online dating ends up giving you a lot of insight into who you are and what you are looking for in another person. So my insights thus far (in list form since run on paragraphs are annoying):
Possibly because of my career, I am mainly an extrovert and gravitate toward people who can easily talk to a new person rather than someone who takes a lot of time to get comfortable.
I adore my career and have put a lot of work into it and like meeting people who are excited about their fields. That doesn't have to translate into being uber successful or even settled into the job you will stay in for the next decade since I have definitely made changes in mine.
Being outdoors and active is pretty important to me. All that effort I put into bar-hopping in my twenties had to go somewhere after all. That said, I have little natural athletic ability and kinda suck at most of the things I take up whether it be cycling, boxing, etc. Quite honestly, even yoga kicks my ass.
And finally, I work with animals on a daily basis so people who are fellow animal lovers and don't list what species they dislike are probably my best matches. But you can dislike alpacas. They're mean bastards and always tried to bite me in school.
As for a first date, no big expectations; just want to meet someone who is as interested in getting to know me as I am them.