Building a Scalable E-commerce Backend with Remix and PostgreSQL

Overview

Build a backend-first e-commerce system with Remix and PostgreSQL. Design APIs for products, carts, taxes, checkout, and order management using production-oriented architecture patterns.

What you'll learn

Design consistent REST-style API contracts with Remix resource routes
Implement PostgreSQL-backed product CRUD, search, pagination, and archiving
Build cart and line-item workflows with computed totals and inventory snapshots
Configure country-based tax rates and preserve tax details during checkout
Convert carts into orders using transactional database operations
Manage order payment and cancellation through validated state transitions
Map validation errors and data conflicts to appropriate HTTP responses

Advantages and disadvantages

Advantages

University courses you can audit for free, with lectures, readings and practice quizzes.
A verified certificate from the university if you pay for it.
Self-paced: start any time.

Disadvantages

Graded assignments and the certificate need the paid track.
Audit access can expire a few weeks after the course ends.
Learning is free, but the certificate costs money.
Some parts (graded work, certificate) are paid.

Some points apply to every course of this kind; see how we rank.

Free to audit

Free: Choose "Audit this course" when you enrol: lectures, readings and practice are free.
Paid: Graded assignments and the verified certificate (Certificate $60). Audit access may end after the course closes.

Before you start

Intermediate: API Integration, Design, & Development (PostgreSQL, Remix, TypeScript) Intermediate: Data Management and Database Querying (PostgreSQL, Remix, TypeScript)

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