Trial - Scraping data from a job website

We need to scrape data related to telesales (inbound and outbound) from UK job sites. We need data on the job role title, salary range and company name. If possible we need the contact email if it is published. There are numerous websites including Linkedin and Indeed etc, but we want to run a trial to see if we can get the data effectively. If possible we would ideally like to understand the possibility of finding the contact email for the company if they are not included in the job posting. If the trial is successful we would like to scrape all the current listings of relevant jobs and then each month scrape all the new listings.