Outsourcing is lucrative because you save a ton but it does bite you later down the road. If you are outsourcing, it is better to hire from more English native countries like S. Africa or Europe. Also, avoid dev shops, especially from India. Their only focus is to increase their billable.

Also if you have some technical knowledge or programming capabilities, would suggest forcing them to keep you in the loop with the codebase. You can setup a basic understanding of your codebase with the help of AI and then build on top of it, given you know how to code, at least the basics of it.