Create a portal to collect information from different sites

Good afternoon!
It requires the development and creation of a website. Our company needs to develop a portal for collecting purchases (tenders) from such sites as: Text hidden
Www.baiterek.gov.kz
Eep.mitwork.kz
It is necessary that our portal could collect information from the listed sites, send subscribers via configured filters, and do analytics of past tenders.
An example of a good competitor portal:
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Interested in the cost and timing of execution.
Thank you in advance!