If you're choosing for yourself a specialist in IT outsourcing, then you should first of all pay attention to specialists with logical thinking, that is an analytical mindset. You can do some tests for them. If you don't want to bother with this and get already ready and experienced IT specialists, then I recommend contacting this company to provide it outsourcing services. The specialists of this company will choose the best candidates for you, who can easily perform any complex task that you put before them. Good luck!