I have worked with a couple of developers before, but David proved to be a real treasure for me. I always got what I asked of him. (It may be weird, but it was not always so smoothly with others.) He was fast and precise, I loved working with him. He was good at understanding the tasks – it can be a difficult thing – and in the end he made every little tweak in a blink. I sat next to him and just watched how fast he was coding. The world would be more beautiful if only David programmed in it!