They weren't interested as they might have had a better candidate. That is typically the reason. It is not about you not passing a metaphorical "bar" at least that is the case for senior positions.
I have been recruiting quite a lot and at the end of the cycle you go through making difficult choices. Often times you get 2 good candidates and only one spot. So you compare them and pick a better one. The dismissed candidate can be picked next year due to lack of better candidates.
Unless it has been clearly stated in the reply that you seemed to be below their expectation of a senior candidate. And even then... a lot can change over the year and if you feel like you are better you have every right to reapply. Most companies will inform you of reapply policy terms if your are outside of it.
I have been recruiting quite a lot and at the end of the cycle you go through making difficult choices. Often times you get 2 good candidates and only one spot. So you compare them and pick a better one. The dismissed candidate can be picked next year due to lack of better candidates.
Unless it has been clearly stated in the reply that you seemed to be below their expectation of a senior candidate. And even then... a lot can change over the year and if you feel like you are better you have every right to reapply. Most companies will inform you of reapply policy terms if your are outside of it.