ATEC, a construction engineering service provider, created in 1988, specializes in the design and construction management. We work throughout France with our clients (developers, builders, architectural agencies, etc.) on all architectural engineering. Our main missions: - construction economics, - project management, - OPC, - economic monitoring of construction sites. We are located in Ile-de-France, Brittany and Acquitaine: Paris (75014), Langueux (22), Rennes (35) and soon Bordeaux (33).