Rafa is a hard worker with a lot of IT skills (and not only that). As an Android app expert, I consider Rafa a good problem-solver and someone with a lot of initiative. He has the experience in order to fix any problem that can emerge along a project. He speaks 3 languages perfectly so can communicate with international groups. As a person, Rafa is a very friendly guy with a good sense of humor. I would always choose Rafa for my project teams.