CS Group initially named CS Communication & Systèmes is a French information-technology service company listed on the Paris Bourse as a member of the CAC Small index. The company designs information systems, develops and integrates software; manages projects and deploys industrial applications and provides science, technology and consulting services. CS Group is the French leader in air traffic control, the third biggest supplier of traffic-management systems in the world and provides information technology consulting services.
A former employee sid this in a review: "Management at CS Group is terrible. Everyone was, and I can safely assume that they still are, always criticized as to why we couldn't understand and finish the assigned work within the allotted time given when, in my case, we weren't trained about anything throughout the entire year that I was employed".