I did tech training years ago, and the company I contracted for had me interview with some of their team to discuss customized on-site training. I think I got the call because I was one of the closest people to their SC office, and would have been able to do multiple on-site weeks without much issue.

But... someone on the call didn't like my description of classes (like object/class stuff), from what I remember - disagreed with both some of the material and some of what I'd said about classes. FWIR, he didn't like them at all, and thought classes were "too much overhead" or something along those lines. I'd indicated that we could customize the material to focus on whatever they wanted to focus on. They were onboarding something like... 10-15 developers every other week, and this would have been a "crash course"-style "everyone learn the same thing to get started" - a combination of "our internal processes" but also "industry standard stuff" from an outside company.

We didn't get the gig, and I think they just settled on "in house only", IIRC. This was probably... 2009? Knowing they were adding ~20 developers per month was already an indication they were growing organically pretty fast (imo).