> how does that work as a growth indicator, are there any known organizations that track your growth based on how many job postings you do, and then use that data to indicate your growth?

As a wild guess this may be part of the story a company tells itself. Every individual and company needs to tell themselves a nice "story" to feel good about themselves. In case of a company "damn, look how many jobs we're posting, we're growing and doing great" is a nice story to tell. Yeah the owners/manager know it's fake, the people writing the post know it's fake, people receiving applications also know it's fake, yet it still works. On paper officially they can tell each other how great they are doing. This is more likely how a large company would operate.

Another, more positive perspective from a small company I worked for is "ABH" (Always be hiring). That means always post jobs, and continue interviewing, because you might find an exceptional engineer for whom you'd make an exception and hire them. But at least in our case it was always an honest effort every time to sit down and evaluate the candidates, pay them to visit and interview face to face and such. It wasn't a game it indeed took quite a bit of effort on our side.

Traditionally the 'Carreers' tab on the website had to exist to project the image of a succesfull growing company.

It was always a delicate balance between on the one hand projecting success, and on the other not scaring clients you couldn't meet demand.

Maybe they were, but now? I doubt that every investor or even AI takes job postings with a grain of salt or plainy ignores them and just looks at the numbers of employees.

Companies don’t have a legal obligation to publicly disclose revenue in many countries, so if you’re selling business insights you’re always on the lookout for indicators that can be used as a proxy to revenue.