I landed my current job at one of the absolutely top paying companies through LinkedIn. Meta contacted me a short while ago and while I wouldn't want to work for them they did find me through LinkedIn and it was a serious recruiter directly from them not some third party shady stuff.
It's my #2 source of jobs after TopTal for the last 10 years and comes before word of mouth. I don't think there are any other sources though one guy hunted me down through a YouTube comment which I thought was pretty cool.
Anything. Legacy to green fields but loads of green fields for me. A lot of startups but also a few well-known names. I did mobile.
After a one week trial you either get hired and paid 100% or rejected and paid 50%. Unless you totally fucked up. The client never pays anything but sometimes they try to abuse it. But >90% good.
It's my #2 source of jobs after TopTal for the last 10 years and comes before word of mouth. I don't think there are any other sources though one guy hunted me down through a YouTube comment which I thought was pretty cool.