Developer needed for creating a shipping API service

About us: We are a B2B eCommerce company that focuses on helping to connect online retailers to connect to all sorts of suppliers. At the same time, we also provide shipping service to both parties to help them ship their products to their customers with a short time and low cost. Project: The deliverable of this project is a shipping API platform and two user interfaces. The API platform will provide the shipping label generation and manifest creation services. It will be powered by DHLeCommerce's shipping API, which means our API will be built on top of the DHLeCommerce's API. However, we would like our API could be generic enough and to be able to extend from using DHL eCommerce's API to any other carrier's APIs in the future. Those two user interfaces will be used by our customers and administrators. The customer UI will include user registration, authentication, billing information, shipping history, API token, and logistic information features. The admin UI will include features related to managing customers' API enablement, billing, logistic information, and account. It also includes features of creating the manifest form, requesting transportation, and other administrative functions. Qualities needed to be successful: Integrity and Commitment. Integrity. You are a good fit if you can be honest with me. Open communication and honesty are paramount to me Commitment. I am looking for someone who is looking for a long term relationship. As our business grows we will consistently require talents to help us in developing our platform. Knowledge. You should have understandings of how public API works, especially the security and performance of public APIs. Also, you should be able to create interactive websites that have modern UIs and well-designed backends.