You work that as a contractor easy if you can find them. The problem is they're rarely hiring one offs to do this because these companies don't have engineering cultures, which is why they contract this shit to system integrators of the world like IBM, then they outsource the work to shoddy consultancy shops to maximize their profits doing basically zero work. If everything goes exceptionally bad (which it did at least in the case I was involved in), then they hire competent contractors to come in and save them from frighteningly large law suits. That's the new dev cycle of these legacy modernizations.. ahh