Los Angeles-based MindJolt, the social gaming firm headed by former MySpace founder Chris DeWolfe, announced this morning that it has hired Ulf Waschbusch as head of its internal social mobile game development. Ulf was most recently Chief Product Officer at Garena, and also has served at Google, MySpace and T-Mobile. MindJolt said Waschbusch will head up SGN Studio, the firm's mobile game development studio. MindJolt is backed by Austin Ventures.