Healdsburg, Calif.—Jeff Mangahas is the new director of winemaking at Williams Selyem Winery. Mangahas joined the winery in 2011 as winemaker, and had previously been the assistant winemaker at Dutton-Goldfield Winery and winemaker at Hartford Family Winery. Before earning his master’s degree in enology from the University of California, Davis, Mangahas was a medical research scientist.