ACM (Association for Computing Machinery)
The Association for Computing Machinery is the national professional association for computer scientists.

The Assocation for Women in Computing
The Association for Women in Computing is an association of women and men that promotes women in computing.

ComputerWorld Magazine career opportunities page.
Includes a service that allows you to fill out a profile of your skills so that interested companies can email you regarding job openings.

AfterCollege
A website with resources for entry-level and part-time jobs, and internships.