Required Salesforce,Scripting freelancer for Salesforce Function to Bulk Export Accounts & Contacts job

We need a function created that exports ALL Accounts, Contacts and Leads from a Salesforce account.

Data should be saved as a csv.

In order to see it working, a simple web UI should be created and hosted by you. Once we're sure its working ok, we ONLY want the function and not the web UI.

Ideally, the function should be created in node.js - but happy to consider proposals in other languages.

I look forward to receiving your proposals.

Skills & Expertise Required

Salesforce Scripting