ZOHO API Integration with website Forms and Phone Call Tracking System - Zapier ?

We are a small business looking for a freelancer with ZOHO API / Integration experience. We have leads coming in from a web form on a few different websites. The other end of things is the Call Tracking service that we are implementing soon. We are looking at CallRail and CallTrackingMetrics, and we will be finalizing soon. These both allow lead data from the phone calls to be passed into ZOHO via the Zapier application. We need integration so that we have full lead source attribution attached to each lead. We will be having leads from several different channels. Some are: Organic - Google Organic - Bing Referral - Facebook Referral - Yahoo Answers Referral - All (excluding Facebook & Yahoo Answers) Direct Paid Ads - Google - Search Paid Ads - Google - Display Paid Ads - Bing - Search Paid Ads - Facebook Paid Ads - LinkedIn Radio - z100 Radio - ktu For our forms on the websites, we would like to be able to have all of the data passed into the ZOHO with the lead. We currently have a ZOHO form on the websites. We want ZOHO to be able to pass along all of the data that we have in the url parameters and all of the other data- such as organic traffic, which search engine, if it's direct, etc... *I will be tagging all of the Paid Ads with custom url parameters where I can. Something like: grp1=paid-ads&grp2=internet&source=bing&medium=search&campaign=creditorsrelief-brand&adgroup=brand-main&keyword=creditorsrelief_broad&content=blank I see three ways of source attribution that may need to be implemented simultaneously: 1. A call comes in to one of many phone #s- the call/callers data is passed to ZOHO via the Zapier app. 2. A form submit which is coming from a landing page with a paid ad, that has url parameters appended.... The ZOHO Form, or custom form, or custom script, should be able to grab the referring url parameters and place them into ZOHO with the lead 3.A. A form submit which is coming from a page does NOT have url parameters because the user came in Direct, or from Organic, or from another website's Referral. We will need a solution that is able to tell what the lead source is; Organic - Google, Organic - Bing, Direct, Referral - Yahoo Answers...etc... -----3.B. Some web pages will have traffic sent to them from only one source. For example, a Radio campaign may have the traffic sent to .com/RadioStationName. We will need a solution that is able to understand that the source is this url and then associate that with the particular Radio source and place it into ZOHO accordingly. To sum up. We need full lead source attribution to be able to completely understand where each lead came from. We are open to different options of getting this done. It just needs to be done right and scalable. We are particularly looking for candidates in New Jersey and preference will be given to someone who can stop by our office in Bergen County NJ.