John Schneider has joined Vitra Bioscience as vice president of marketing and business development.
Prior to joining Vitra, Schneider held roles of R&D director and VP of marketing and business development at Molecular Dynamics and Amersham Biosciences, both of which were acquired last year by GE Healthcare.
Peter Barrett has been named chairman of the board of directors of Momenta Pharmaceuticals. Barrett previously served as executive vice president and chief business officer of Celera Genomics, and before that in senior management positions at Applera. He currently is a senior partner at Atlas Venture.