The new hire got lucky, as there was some low hanging fruit (optimizations we all knew about). The obvious solution was implemented and then he ex post facto claimed 100% credit for the revenue enhancement. Since it’s like 10x his salary every year he’s pretty much on autopilot.
Actually good that the company hired him then.
Sadly, most engineers aren't allowed to pursue that kind of stuff. Normal dev jobs can be stifling.
But the CEO who hires a data scientist is explicitly asking that person to walk into their office and say "I can increase revenue by X" - that is their job. The website dev does not have that job.
And there are two views on this problem - the CEO did the right thing by hiring someone to explicitly optimise the site - there are improvements to be made, create the right organisation so that those improvements flow to company.
Or there is the other argument, that the organisation is stifling innovation from below, and that the CEO should have been actively soliciting improvements from dev team and elsewhere
Generally both are right
I did this several times in my early career and was paid a lot and it was win/win
You have to phrase it carefully, but if you phrase it as a win/win with no risk, they’ll sign off on it
In my experience, to these people, big data means "the excels look really big."