simple PHP task - also looking for long-term help

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Bids
6
Avg Bid (USD)
$85
Project Budget (USD)
$30 - $250

Project Description:
We have an existing basic geo-redirect php script, which redirects traffic from our publishers to various advertisers based on their geo-IP:

publisher sites > ads.ourdomain.com > advertisers

The links are edited thru a simple admin panel (see attached screenshot).

WHAT WE NEED:

1. We would like to add ability to pass additional info from publisher, like:

ads.ourdomain.com/?track=source1
ads.ourdomain.com/?track=source2
ads.ourdomain.com/?track=XXXXXX

and to be able to target different ad links in admin panel based on the source. Let me know how you think is the best way to add this targeting to admin UI.

2. Integrate detailed statistics. Currently it only counts redirects for each link (see yellow column in screenshot). We would like to get more detailed traffic statistics (like Piwik) for each link.

Minimizing redirect speed is most important. Current redirect takes about 100-300ms (less than 1/3rd of a second). Let me know how much would Piwik (or other tracking solution) would slow down this redirect time?

OTHER: (not part of this project)
We're also looking for a fast, reliable, always available, easy-to-reach developer who could help us turn this script into a full-fledged advertising platform in the coming months.

Skills required:
Geolocation, PHP, Wordpress
Additional Files: redirects.png
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