Quantilus built a backend ordering system with robust APIs so any eCommerce Website can add the USPS as a shipper onto any commercial e-commerce website. This allows manufacturers in the United States to expand their markets globally, and provides the USPS with additional revenues by making USPS a preferred shipping vendor for international eCommerce transactions.

Given the enormous amounts of data, our team pocked MongoDB as the backend data store for this project. The services layer was written using NodeJS on AWS Lambda, and the APIs are exposed using AWS API Management system. To calculate the taxes due for different international jurisdictions, we collected and consolidated real-time data from multiple third-party services with more than 10 e-commerce merchants.