don't think you'll find anything explicit. but these big french contracting companies are very well known for their technical incompetence. they are not tech companies, their number one priority is to land lucrative contracts and keep renewing them and growing them, executing them or worrying about the quality of the end product is an afterthought.
the compensation in these companies is all the proof you need, most of the money is spent on 'business guys' and whole big ladder of them, projects on the technical side get staffed by who can accept the least pay regardless of skill. failed to get your diploma, great they can hire you for a big discount, have an art degree or anything else but know how to argue in a interview great you're hired.
they hire such people by the shovel everywhere. they are not the only company that does it almost all the big and smaller ones. here are some example of job offers that you can translate, and keep in mind that even is you don't meet almost any criteria they can still hire you if you accept a small enough price. I know a few of them in person.
- https://fr.indeed.com/q-capgemini-reconversion-professionnel...
- https://jobs.capgemini.com/fr-fr/job/Reconversion-Profession...
these a few example but search in indeed and other hiring webites and you'll find them spamming this kind of offers everywhere.
having a career as a tech guy in these companies is a dead end, and a recipe for depression.