Well, it depends on the company. But as a rule, said titles are: 1. Entirely meaningless between companies, since different companies have different ideas as t

Well, it depends on the company. But as a rule, said titles are: 1. Entirely meaningless between companies, since different companies have different ideas as to what counts as junior, midweight or senior respectively. For instance, a senior at Google and a senior at a small agency are a million miles apart. 2. If the company isn't a tech company or technically minded, they're probably meaningless within said organisation too. The most accurate thing you can say about 'seniors' is that they're usually the more experienced web developers in the company, whatever more experienced actually means in said case. But yeah, meaningless between companies, meaningless in ones which aren't tech savvy and don't take them seriously, maybe meaningful at FAANG type companies.