SANTA MONICA, Calif.--(BUSINESS WIRE)--Los Angeles’ up-and-coming startups went head to head in two Shark Tank pitch competitions at last week’s LA Tech Summit, with TalentTrail and CardBox coming out on top, event organizer Cornerstone OnDemand announced today. TalentTrail, represented by co-founder Sydney Liu, was selected as the winner in a Shark Tank competition featuring leading university startups. The company’s platform matches students with internships, and is currently based at the Uni