I am not a developer but here are my impressions as an outsider (I did not downvote either, and I don't believe your post is that bad). This is highly possible that I am totally wrong with my assumptions on the downvote

- Your TIE fighter gets too much attention, most of the other posts here are sober and don't try to attract attention with tricks.

- It seems like you are looking for a "rockstar", and for what I know most of the people are tired of those job descriptions. Maybe changing from the first person to the second person will change that.

- Maybe it is the 7+ years.

- Maybe it is the salary for the requirements (I don't know the usual salary for this situation)

- Maybe it is just the Rebel Alliance

I would also appreciate to have other perspectives on the downvotes (pure curiosity and trying to understand)