Michael,
I don't actually have a service to recommend. But I have a tip: No matter what service you end up using, make sure that they not only look at your resume but that this also includes a review and update of your LinkedIn profile. Nowadays, this is where staffing companies and employers go first when looking for new candidates. I have anecdotal evidence that simply including PMP and PMI-ACP on LinkedIn was why my former students were contacted for open positions.