The best part of occuscreen was that they were able to find me within 48 hours after I applied online! They also had great customer service, which helped with any questions or concerns we may have had along our journey together.
It can be hard for people who are not in tech/computer fields to understand how this works - but it's worth looking into if your job requires frequent communication over email (as mine does). We used them when searching for an IT person as well as someone to help us set up my computer so that we could use Skype more easily while working remotely from home.