Linkedin. If you can't find the person who manages that department, find anybody in that department and ask them about the job and the manager. One "trick" is t

Linkedin. If you can't find the person who manages that department, find anybody in that department and ask them about the job and the manager. One "trick" is to let them know you're looking to apply at the company and want to ask them for career advice. Most people love giving advice.