While in my previous job I started what can be seen as an informal mentoring relationship with some junior colleagues. Basically, they asked me for career advice (skills needed, how to acquire them, recruitment, etc.), which I was able to provide. These were people from the same company I worked for, however, we never worked together. I can't assess their skills or personalities. There was no conflict of interest involved as these weren't permanent employees.
Now I work in a more senior position and among others, I'm responsible for recruiting people for my team.
Some of my previous mentees know that and contact me asking for tipps on job search and to meet up - and hinting that they are job searching.
My goal is to let them know that I'm not interested in giving this type of advice anymore or in meeting up.
Whereas I wish them all the best, we have never worked with each other. I can't vouch for their personality or work morals, so I couldn't recommend them for my company. I'm quite sure their skills aren't up to what I expect for my team either, simply because the standards of my current company are much higher than the previous one and I'm 99.9% sure, they don't have them at this point.
I helped them the best I could, but don't have time for more mentoring.
This is a small industry and I don't want to burn bridges.