> One big point that would be useful is to help the fired engineer find another job.
If you actually have a likely other job, sure. Otherwise the old "I know guy at Google who can look at your CV" is just a way to make yourself feel good, and it will be seen that way too.
The problem is veterans will see right through you and discount your efforts, unless you have that amazing job. And juniors will think you're helping until they realize you aren't, and they'll be disappointed in you.
This is not impossible to pull off. Especially if you have some networks in tech, who may find the idea of hiring performing engineers from you but just junior or too much of role, to be valuable.
If you actually have a likely other job, sure. Otherwise the old "I know guy at Google who can look at your CV" is just a way to make yourself feel good, and it will be seen that way too.
The problem is veterans will see right through you and discount your efforts, unless you have that amazing job. And juniors will think you're helping until they realize you aren't, and they'll be disappointed in you.