Pros
There are some interesting cutting edge projects to work on and you’ll gain a lot of experience from working with highly talented and intelligent individuals.
Cons
Thales will run you into the ground and won’t reward you well enough for it. They want to hire “700” Engineers yet are perfectly happy to let the best leave with a wealth of knowledge and replace them with inexperienced graduates to save a couple of grand. People with zero communication or managerial skills are promoted to roles that they don’t hold the skills for and constantly make decisions that’ll jeopardise key contracts. As others have said it’s run like a 1980s company with no consideration for what talented young engineers want to aspire to do (perform at their best for the success of the company). Instead upper and middle management would rather coast on their nice comfortable salaries and retire early while the company declines, and refuses to entertain the idea of innovation (i.e. let’s just copy this). It’s a good place to start out but move on and fast.