We do not offer professional services ourselves and we don't want to endorse anyone in particular, but here's a few resources that UX professionals use when they look for jobs, as well as a table of possible contractors from Elance. You should post your job offering there. Good luck with your search!
Job Announcements on Twitter
Professional Association Job Listings
- CHI-JOBS Email List
- IA Institute Job Board
- IXDA Interaction Design Job Board
- Usability Professionals Association Job Bank
Job Sites
- 37signals Job Board
- Authentic Jobs
- Consortia (UK)
- DUX Jobs
- Good Experience
- HF Careers
- Indeed
- Krop
- Simply Hired
- Smashing Magazine
- UX Design Jobs
- UX Jobs LA (Los Angeles)
Keywords: pro services freelancers hiring interaction designers information architects