Automting PDF redaction

I would like to create a web based software which would allow users to enter a list of phone numbers, select a pdf and then the software would automatically redact all those numbers and return a redacted PDF.
Is this something that could be done with your software, do you have any coding samples to achieve this.
What software languages are supported.

@AlexMapping

You can surely redact particular region of PDF Page based on text search using referred code example. In case you face any issue, please share your sample PDF document with us so that we can test the scenario in our environment and address it accordingly.