They carry jobs for Canada and the USA and are in the process of adding links to the United Kingdom. MedZilla - A great place to find jobs in Biotechnology, Pharmaceuticals, Science, Medicine, and Healthcare. Exclusively for outstanding candidates and professionals. Online since 1994, MedZilla established the new chemistry of matching the right job with the right candidate. Very well organized.
Some listings are free.
PharmInfoNet - Includes jobs from 50 states. International Pharmajobs lists open positions in the pharmaceutical industry, as well as post doc positions. Academic Technician positions are listed. Microscopy MicroWorld Jobs On-Line has the best listings for this field. Media Cybernetics - imaging sciences.