Got punched in the face

Long story short, I got punched in my face by a drunken guy who claims to work for Facebook in Austin office. It happened on 7th st in front of a hotdog stand at around 2:30 AM. He started hitting on my girlfriend as I was standing right behind her. My girlfriend and her friend told him that he should leave but instead of making conversation he straight up said “I work for Facebook here” as if anybody should be impressed by it. So I told him to get lost not being physical. He turns around started to swear at me, pushed me, and the next thing I know he was throwing punches on my face. I then realized this guy’s out of control and he needs to learn his lesson. Immediately told my friends to call the police. People broke us up but I was holding his clothes repeating, can you handle this situation? He was blinded by his anger which I still don’t understand where it’s coming from. Eventually he got away with his friends even before police showed up. I have bruises on my face and I want him to get punished. Could anyone help me find this guy? 5’4” or maybe a little bit taller white guy maybe working for Facebook in Austin, TX. His fist is probably bruised up.