The Academy is a scholarly association but open to all. This would be the correct location to find placement service for careers in academe.
APS is one of the scholarly psychology associations. Membership is open to students.
The APA is the premier psychology association. Students may join at prorated rates.
ASTD provides resources and certification for training and development professionals.
SHRM is a good source for keeping up to date on issues. Student memberships are available.