Depending on your definition of mid-level, some FAANG companies wouldn't allow this: companies are sometimes "up-or-out" for entry-level and mid-level engineeri

Depending on your definition of mid-level, some FAANG companies wouldn't allow this: companies are sometimes "up-or-out" for entry-level and mid-level engineering, and require engineers to get to senior engineer after about 5 years of total of relevant experience or risk getting fired. At such companies, someone applying with 10 YoE will only be considered for senior engineer or higher roles. But you could go from staff to senior if you wanted.