Todd Spangler NY Digital EditorVeteran finance exec Drew Vollero, who shepherded Snapchat parent Snap’s initial public offering in 2017, has joined Reddit as its first CFO — as the internet discussion site is mulling an IPO of its own.Vollero, who has 30-plus years of industry experience including a 15-year stint at Mattel, will assume leadership of Reddit’s finance team starting later in March and report to Reddit COO Jen Wong.“Drew is an industry thought leader who brings a track record of