We had to pay around ~5,00EUR for each and every click on "Apply" to our job posting, which doesn't mean they even filled out the form.
And now, where LinkedIn is full of Indian scammers (not meant in a racist way, but it is definitely perceived that way) we had costs for a "Local Area" limited job posting for hundreds of people from India because they seem to use LinkedIn via proxy.
When we had costs of over 2800EUR for an ad that was displayed less than 8 days, where literally 100% of people were not even from Europe, we decided to fuck this shit and move on to other platforms.
LinkedIn is absolutely useless. Use University job sites, local meetups (during non COVID times, of course), or open source projects to identify devs that actually care about code.
Also, stackoverflow talents is useless. Their "special startup package" of getting access to the platform for 2500EUR is only for one user, limited per email and phone number, not allowed to login in parallel. Every job posting costs additional 400EUR even if nobody applies for it.
You get nothing, as over 90% of people we have actively talked to are not even looking for a job and never clicked that on any stackexchange platform.
I didn't realize how fucked recruiting is. Srsly, somebody needs to fix this.