Zenefits opens up to third-party developers and launches a suite of new HR tools

 David Sacks has a big job ahead of him. Formerly the CEO of Yammer, which sold to Microsoft for $1 billion, he’s doing it this time around as the head of Zenefits, trying to right the ship of a company that has halved its valuation and fired its founder for violating insurance regulations. Today he is rolling out Zenefits’ second second incarnation, and in Sacks’ new… Read More