Circle co-founder Jeremy Allaire announced that Bradley Horowitz, a senior Silicon Valley product and business leader, has officially joined Circle's board of directors. Horowitz previously led search and media infrastructure at Yahoo and led the development of several popular Google products. Allaire said: "I look forward to working with Bradley to jointly promote the construction of a new infrastructure platform for the Internet economy. His joining will inject new vitality into Circle and help the company further develop in the digital economy."