On LinkedIn (or anywhere else), any company that does not list a salary range in its advert is scamming you. They will offer a lowball salary and then make you negotiate (which is inherently disrespectful, given that they do that to cheat people who don't have good negotiation skills). Even after negotiation, their high end will probably be on the low end of the scale. Any company that treats people like that is looking at you as a fungible resource, not a valuable team member. I'd avoid those companies in favor of ones that treat candidates with respect.

Source: x.com/allenholub/status/1858556006961213822