Wemimo grew up in the slums of Lagos, Nigeria, and came to the United States when he was 17. He and his mother struggled to receive a loan without a credit score and borrowed money from a  payday lender at over 400% interest. That experience inspired Wemimo and his co-founder to start Esusu, a financial technology company that helps households use their on-time rent payments to build credit. Most recently, Esusu raised a $130 million Series B equity financing round with a  $1 billion valuation.