Building a Scalable E-commerce Backend with Remix and PostgreSQL | CodeSignal Learn

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Building a Scalable E-commerce Backend with Remix and PostgreSQL

Software Engineering

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5 courses

60 practices

8 hours

Build a scalable, backend-first e-commerce system using Remix and PostgreSQL. This course path emphasizes API design, service-layer architecture, data persistence, and refactoring for production readiness. You’ll work with realistic constraints and patterns used in real-world backend systems.

Earn a shareable

Certificate of Achievement

Verified skills you'll gain

ADVANCED

API Integration, Design, & Development

ADVANCED

Data Management and Database Querying

Tools you'll use

PostgreSQL

Remix

TypeScript

Course 1

Backend Foundations: API Contracts & First Catalog Endpoint

3 lessons

12 practices

Set up a consistent API contract, reusable request/response helpers, and your first e-commerce endpoint. You’ll learn Remix’s resource route model (API endpoints implemented via loader/action) and establish the foundation that every other endpoint will reuse.

Course 2

Products API: CRUD, Search, and Pagination

3 lessons

12 practices

Expand the catalog API into a full CRUD surface: create products, fetch them by ID, update fields safely, and archive records. You’ll also practice mapping validation failures and conflicts to correct HTTP status codes.

Course 3

Carts API: Line Items, Totals, and Inventory Snapshots

3 lessons

12 practices

Introduce shopping carts and cart items. You’ll create carts, add and update items, and return computed totals. This module establishes the data flow that powers checkout in the final module.

Course 4

Orders API: Checkout Workflow and Order State Transitions

3 lessons

12 practices

Finish the backend with checkout and orders. You’ll convert carts into orders transactionally and implement order listing plus state transitions (pay/cancel).

Course 5

Tax API: Country-Based Rates and Checkout Snapshots

3 lessons

12 practices

Make tax a first-class part of the backend. You'll add a tax rates configuration API, allow carts to pick a tax country, and ensure checkout snapshots tax details onto orders so historical totals remain stable even when rates change.

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