Oh what a coincidence. I am also looking for a professional developer or agency to produce cool show videos.

Hello, if you are looking for a company that provides php developer, here i can only recommend one company and that is Aristek Systems more than 20 years working in such area, experienced people will help you with solving your problems in such area. I recommend that you contact this company.

The question is an interesting and controversial one. If I were you, I would focus more on the specialist's education and work experience. Different countries have their own approach to the educational system and training of developers, so you should study this issue. If you want my subjective opinion, the experience of working with developers from Poland became very successful for me largely thanks to https://talmatic.com/hire-polish-programmers/. This agency picked the best specialists for me, who took on my complex project and completed it in the shortest possible time at a high level.