After working as a general manager for Uber in Nevada, Jason Radisson realized the need for a way to connect blue-collar workers to companies looking to employ them. Since formally launching in 2019, Shift One has grown to have 25,000 workers on its platform -- many of whom it says were unemployed at the time of hire. To help it grow and further expand its reach, Shift One just raised a $5.2 million seed round led by City Light Capital and Tinder co-founder Justin Mateen’s JAM fund, with participation from K50 Ventures, Ventura Investments and Human Ventures, as well as angel Felipe Villamarin.