Write a script for scraping content

The services of a web programmer are required to write a script for content parsing.
In general terms:
Requires a script for parsing and saving data from feeds of public profiles of Facebook and Vkontakte networks.

Detailed capabilities of the system:
0. Password login to backend. There are two work zones inside:
1. Collection area – the script should accept a list of links to people’s profiles in the FB and VK and supplement their existing database of such links, it should also be possible to delete or disable unnecessary entries.
2. Parsing zone - the second script cycles through each link from the database with a given interval on the crown, to get information from their walls for a certain period, selecting those records in which certain combinations of words come across
3. The data must be stored in the database by linking them to a specific profile of the person in it.
4. The information obtained should be displayed in the form of a single tape in chronological order.
We will reset more detailed TK to a potential contractor. Special research in the design is not required, the tasks need to be solved only these, but with the backlog for future support and revision of this software.