We are a global group specialized in Mobility, Railway Consulting & Transportation Engineering that renders planning, design, construction, and operational services in the mobility & transportation industries. The group is made up by: Sam Schwartz Consulting in the USA, GPO Ingeniería y Arquitectura in Spain, SISTRAN in Brazil, GPO Colombia, GPO Peru and GPO Argentina, having a portfolio of projects developed worldwide. GPO Group established a strategic partnership with Dar Group in 2017, which allows us joining an international first-rate professional network and, thanks to the Dar Group companies, GPO Group is giving its services to its clients in the five continents. Our clients are public agencies, private firms, general contractors, and concessionaires As a group that is committed to progress, we are interested in contributing to the improvement of the countries where we operate. Our philosophy is based on the fact that design and construction are inseparable, and that applying deep knowledge to each of these aspects is fundamental to succeed.