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Alten SA

A French engineering and technology consulting firm that helps industrial and tech companies design, build, and test their products — from cars and aircraft to software and embedded systems. Founded in 1988 by three engineers from top French schools, it grew into one of the world's largest engineering consultancies, operating in dozens of countries. The founders — Simon Azoulay, Laurent Schwarz, and Thierry Woog — took the company public on the Paris stock exchange in 1999.