The software testers at Aspiritech are a collection of characters. Katie Levin talks nonstop. Brian Tozzo hates driving. Jamie Specht is bothered by bright lights, vacuum cleaners and the feel of carpeting against her skin. Rider Hallenstein draws cartoons of himself as a DeLorean sports car. Rick Alexander finds it unnerving to sit near other people. This is the unusual workforce of a U.S. startup that specializes in finding software bugs by harnessing the talents of young adults with autism.