This function exists in every publicly traded public company, and is called internal audit.
It has the potential to be incredibly impactful, but often devolves into box ticking (like many compliance functions).
And it's really hard to find technical people to do the work, as it's generally perceived as a cost centre so tends not to get budget.
Nobody really tries to get technical people to do the work.
Like cool, it's a great idea and would potentially produce positive results if done well, but the roles pay half the engineering roles, and the interviews are stacked towards compliance frameworks.
There's very little ability to fix a large public company when HR is involved