Seresco | 16,771 followers on LinkedIn. [RE]EVOLUCIONANDOcontigo | Seresco is a Spanish company specialized in software solutions and IT services, with more than 45 years of experience and more than 500 professionals. The company has offices in Madrid, Barcelona, Asturias, Galicia and outside Spain subsidiaries in Ecuador, and Costa Rica. We also operate in Portugal, France and Belgium.