I've worked at Atos for more than 10 years. Keep in mind, almost every year there is a threat of layoffs at Atos - it's normal.
They are trying to move as many positions as possible off-shore - most of the functional support positions are moving as well.
The role will be transnational at Atos and the firm has no loyalty to employees.
At Atos, seniority means pretty much nothing nothing and the longer you are with the company the more likely it's your turn to be let go as you are compensated more.
They keep cutting costs big time and they will continue to keep training is at a minimum for years to come - so any training you need you'll have to figure out on your own - stay longer after hours and Atos will not compensate you for that.
Upper management is fairly detached - they do not understand what's going on in the tranches - support personnel is left to figure things on their own.