David Michael & Co. has expanded its team with two new employees and two in-house promotions. Valina Antoine has assumed the position of the company's technical and regulatory specialist. Arlene S. Dominguez has joined David Michael's accounting department. Her main area of concentration will be payroll and related tax compliance requirements. John Kostek has joined the company as operations manager. His prior experience is with Sweet Ovations and Cargill Flavor Systems, and he will be responsible for various operations within the Philadelphia facility as well as the manufacturing operation of the California facility. And Val Barber has been promoted to vanilla lab manager.