H1b abusing consulting companies tend to pick the job title with the lowest average compensation no matter what, since the official job title governs allowed salary limits in H1b.

This is why the average salary for a "software consultant" is so much lower than most other titles. These companies all pile on the same lightly used job title to synergistically lower the average salary.

I don't think it has anything to do with seniority levels, it's money. The fact that most of these devs are brought in as junior engineers shows that these companies don't really need employees with specialized knowledge, which is the whole point of the program.