I later found that he is more like a AI expert than a deep learning expert, but still really famous for the work of modified neral style transfer which is a popular topic related to deep learning few years ago, so I think I will still introduce him to you.
He has worked in industry as a senior AI programmer for many years. He received his master degree of artificial intelligence in the University of Edinburgh in 2002. Alex J. Champandard focused on game development for many years, most notably for working on an advanced motion-capture based animation system in Rockstar Games and found the largest online site for the game AI community - AiGameDev.com
In 2016, he propose a novel structure (with semantic information) on neural style transfer, the demo known as neural doodle and got a pretty nice result compare to previous work. Here is the nice demo of his work. You can also check the code and paper here and here respectively.
Now he is the founder of creative.ai and the event director of nucl.ai conference which dedicates to the application of artificial intelligence techniques in creative industries.