Billie, the Berlin-based fintech startup that offers a B2B invoicing and payments platform, has raised €30 million in Series B funding. Leading the round is Creandum, alongside SpeedInvest, Rocket Internet’s GFC and Picus. Founded in 2017 by the same team behind SME online lending platform Zencap, which exited to Funding Circle in 2015, Billie wants…