316-788-1641. |. 772 N Baltimore. Derby, KS 67037. D & B Service Center has job openings available for an experienced Master Technician. We're looking for honest, dedicated, customer-service oriented people to join our team at Derby, KS. Master technicians are responsible for performing our most technically complex repair work, as well as overseeing the quality of repairs and maintenance performed by other technicians. Master Technicians are resp...