Contra Costa County only accepts online applications. When viewing a job posting for a currently open examination, you can select the option that says 'Apply'.How do I submit an application? It is important to submit your application with complete and accurate information. Get the classes that will help you thrive. To get your placement, you'll just need to submit your application with intent to enroll at Contra Costa College. An incomplete application packet may disqualify an applicant. Contra Costa County is seeking talented and qualified individuals to fill clerical vacancies throughout the County! Just rely to the email. It's a legal concept that offers should be extended, and then accepted.