You might try the Measure Slack workspace: measure.slack.com. It is a public space, but requires permission to enter. Once you are in there is a #job-postings channel. It is a bit more analytics-centric, but a lot of overlap considering the scope of the #measure community.
You should also check out MeasureMatch (http://web.measurematch.com), it's a website where you can find & hire Adobe Target experts/freelancers (as well as many other analytics & martech tools pros on there too).
It's on-demand, quality of talent is really high, and you only pay when you find an expert to work with.