Data scrapping/ web crawler from a Job portal

We are looking to get a Web Crawler built to do data crawling/ scrapping for us. Portal is like a directory listing on which I am providing the hierarchy as below First level hierarchy: 1) listings by category (URL: [login to view URL]) 2) listings by cities/ location (URL: [login to view URL]) Second level hierarchy: All the second Level pages (under first level) lists around 50 jobs per page. Depending on the category/ location of first level, some second level pages can have upto 100,000 job postings. Sample of one such second level page is: [login to view URL] And finally a Job post page would look like this: [login to view URL] and [login to view URL] There's a javascript button at the bottom of page saying "View Contact Details" which then fetches the contact details about recruiter. Some pages have 4-5 fields provided of contact details (name, telephone, email, website and address) and some have less of it. We need to capture all the contact information in a MySQL (or any other SQL format). About the script: Selected freelancer will make the script, scrap the data for us for 1-2 days so we know its working well, speed etc. Provide the script in open format so we can customize it further if need be. We will be running this script everyday from our server with hundreds of IPs for rotational purposes. Thanks.