Two types of site exist. The simple services take your resume and post it in as many career sites and job applications as possible. This means that potential employers see a large number of applications arriving through that channel, and will probably end up ignoring them. As a result, most of the serious sites offer a two way applicant and employer matching service. Potential applicants fill out an online form indicating the type of job they are looking for, and the locations were they would consider working. When an employer has a job opening they register the details with the site. The employer receives a limited filtered list of the candidates that best match the job posting.
Your resume will remain on the site as long as you wish to be considered for new job openings, and you can continually log in to update your status and modify your criteria for the jobs that would interest you. If you are looking for technician jobs in the Clinical Research Industry, a specialized site that is tailored to the sector will probably far more effective than a general site. A specialized site can tailor the details and the way they are handled to the specific requirements and conventions in the sector. Using the site will be quicker as well, menus will be pre configured to the common options, grades, and positions in the Clinical Research Industry.
Once employers have selected potential candidates, they will usually use the site to make an initial contact. The site may allow you post your resume anonymously, and in this case you will have the possibility of approving your candidacy before employers receive details. Sites may include chat or forum like mechanisms were employer and candidate can quickly hold a preliminary interview before delving more deeply into the selection procedure. But that is as far as they go, they get the employer down to a shortlist of potential candidates, but the candidate can then make a formal application knowing that they have a good chance of being selected.
Resume distribution sites do not usually check the details of candidates and job posters, but they mostly have a feedback scheme. People supplying inaccurate or unrealistic information can be signaled to the administrators so that time wasters can be weeded out of the system. Once again, using a site specifically tailored for technician jobs in the Clinical Research Industry is an advantage as the administrators will have more experience with job requirements and recognized qualifications which make arbitration in such cases much easier.
