Working in Baires I learned (the hard way) the expression Meat Seller, that sums up what Baires is. One of the things is that they abandon you with a client, your experience with them will depend entirely on the Focal Point (client-side manager) that you are lucky enough to work with, if you get along well, then you will have a good life, otherwise Anyway, I recommend that you go as soon as you can because your life will be hell.
Baires promises that he will review your salary, but he will not. Make sure you negotiate a good starting salary because that is unlikely to change over time.
A few months ago they introduced me to HPP (low performance for those who don't know), I didn't even last a month on it because it is an absurd thing and it serves exactly the opposite of what they say it is, during that time I had a crisis of anxiety because no one explained to me what was happening behind the scenes. In the end my performance only went down during that period, when it was finished it returned to normal.
In short, Baires is not the company of anyone's dreams and if you have not worked as a contractor before doing so for the first time with them it can be shocking.