Ventajas
I personally dealt with Ryan and my employment experience was great.
They found me and suggested a potential job opening. I agreed to proceed and they set up an interview with predetermined rate for the position.
After the interview they reached out very quickly and said the client expressed an interest.
Contract was promised as 6 month assignment and actually was one of the few that I had in the last 5 years, where it went as promised.
After its ended in mid-2019 I had several interviews thru Black Tree, but nothing panned out.
You have to be a pretty good fit to get the job.
Desventajas
I can't think of any at the moment