Encino-based uSamp, the provider of survey and sampling technology and services, said Tuesday that it has named Leslie Warshaw as Vice President of Research Solutions. Warshaw joins the firm from Lightspeed Research and TNS, and also worked at Nielsen Company. uSamp provides a platform and network of survey respondants used by companies to gain insights into consumers and businesses. The firm is led by serial entrepreneurs Matt Dusig and Gregg Lavin. The company says it now has more than 185 employees.