There are many sites that help individuals to find a job. Many of them have jobs lists on the site and some have a way for people to post their resume for employers to look at. Also, if a specific company is desired going into the human resource section or a job opening section of its web site allows resumes to be filled out on the site. Through these sites openings can be found throughout the world. After the company gets the resumes they are given to the human resource personnel.
Every company works with resumes and job applicants differently.
An overview of what some companies do is under the follow-up section of the web site.