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Build Backend Functionality for Existing E-Commerce Website

  • Posted:
  • Proposals: 54
  • Remote
  • #4504608
  • Open for Proposals
Óscar P.Huzaifa M.Dhirendra K.Osama Bin S.Chintan P. + 49 others have already sent a proposal.
  • 2

Description

Experience Level: Expert
We are looking for a skilled developer to help us implement several backend features for an existing e-commerce website.

The project involves improving and extending the current platform functionality, including:

* User authentication and account management
* Product catalog management
* Inventory tracking
* Order processing workflows
* Payment gateway integration
* REST API development
* Performance optimization
* Database improvements

The website is already in development, and we are looking for a freelancer who can assist with the backend implementation and provide technical recommendations where appropriate.

Required experience:

* Node.js
* TypeScript
* PostgreSQL
* REST APIs
* Backend development
* Database optimization

Please include examples of similar e-commerce or web application projects you have worked on, along with your estimated timeline and approach.

We are interested in working directly with experienced freelancers who have a proven track record delivering production-ready web applications.

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Clarification Board Ask a Question

  • CYTNHIA W.

    Before estimating accurately, I'd be interested to understand where the current platform is experiencing the most business impact today: checkout and payment workflows, inventory synchronization, order fulfillment, performance under load, or administrative product management? Knowing the highest-friction area helps prioritize backend architecture decisions and often reveals the fastest path to measurable improvements.

  • Salman U.

    Is the existing backend architecture already established (authentication, database schema, and API structure), or are you looking for recommendations on improving the current architecture alongside implementing the new functionality?

  • Asad C.

    - How should inventory management operate within the system? Do you require real-time stock tracking, inventory reservations during checkout, low-stock notifications, warehouse management features, product variants, or support for multiple inventory locations?

    - Which payment gateways need to be integrated, and are there any specific requirements around recurring payments, refunds, partial payments, subscription billing, payment webhooks, or transaction reporting that should be supported?