The Université Paris-Saclay is one of the largest research structures in the world, so it is not surprising that it has also one of the largest concentration of data scientists in public research. Of the 214 data science researchers affiliated with the CDS, 76 are active (participating in the steering committee, in one of the work groups, or in one of the funded projects).
There is an order of hundred software engineers at UPSACLAY, mostly working on domain-specific software. Among them there are maybe 10 to 20 working on software related to data management, analytics, and visualization. There are no more than a handful of data engineers working on multi-purpose toolboxes, and it is largely the same group of engineers who can take on the data trainer role.