It sounds like you're agreeing with my point; good people do good work, the brand name on the invoice billing you for their time is irrelevant.
That said, I would be highly skeptical of any 'very experienced systems engineer' who took a job at a glorified post-collegiate body shop like McKinsey. At least in the US, given all the opportunities available, it means something has gone horribly wrong (EU/ex-US might be different given it's a dead zone for tech).
That said, I would be highly skeptical of any 'very experienced systems engineer' who took a job at a glorified post-collegiate body shop like McKinsey. At least in the US, given all the opportunities available, it means something has gone horribly wrong (EU/ex-US might be different given it's a dead zone for tech).