Conversation so far:
Where does Joi Ito work currently?
He currently serves as a Board Emeritus for OSI.
Where did he start his career?
Ito became a disk jockey working in nightclubs in Chicago such as The Limelight and The Smart Bar.
Did he have any other non tech-jobs?
Later, Ito ran a nightclub in Roppongi, Japan called XY Relax with help from Joe Shanahan of Metro Chicago/Smart Bar.

Question: What area did he end up specializing in?
Self-contained rewrite: What area did Joi Ito end up specializing in?