According to Foresight News, Jack Melnick, the former head of DeFi at Polygon Labs, has joined Berachain in the same role. Melnick has been serving as the head of DeFi at Polygon Labs since January 2023. His move to Berachain marks a significant shift in his career, and it will be interesting to see how his expertise will influence the DeFi operations at Berachain.