lvl#4 · Module 4 of 5

The Full Stack

Level 4 closes the loop. You add backend, databases, APIs, and team workflow — the skills to build and ship a complete product from data to UI. By the end you can build almost any project, and you are ready for a full-stack or backend developer role.

What you'll learn in The Full Stack

SQL databases

Relational data, schemas, joins, queries, transactions. Most production systems live on SQL — PostgreSQL or MySQL — and understanding the relational model is non-negotiable.

NoSQL databases

Document-style storage like MongoDB. When document stores are the right call, when they are the wrong call, and how to think about data modeling without joins.

Build APIs

Designing and building REST APIs that your frontend (and any other consumer) can call. Request/response shape, status codes, auth, error handling.

Integrate the frontend

Wiring your React app to your own backend. Authentication flows, fetching, loading states, error states, optimistic updates. The end-to-end mental model.

Learn to fail LeetCode

At this tier the problems are hard enough that you do not always solve them on the first try. That is the point — by 50+ problems solved you also have a pile of problems you got stuck on, and that is where the real learning happens.

Design patterns

Reusable solutions experienced engineers reach for instead of reinventing — singleton, factory, observer, strategy, and the rest. When to use them, and (more importantly) when not to.

Work in teams

Real collaboration — branches, pull requests, code review, conflict resolution, shared standards. The difference between a solo project and a shippable product.

Build awesome full-stack projects

End-to-end apps with authentication, persistence, API, and UI. The kind of project that demonstrates job readiness without further explanation.

Tools and technologies

Node.js — JavaScript on the server
Express (or similar) — HTTP server framework
PostgreSQL / MySQL — Relational database
MongoDB — Document database
REST / JSON — API style and payload format
Postman / Insomnia — Test APIs without a UI
LeetCode (harder problems) — Medium-Hard tier

What you'll build

Projects in The Full Stack are designed to compound. Each one reinforces the previous skill while adding the next.

A full-stack CRUD app with authentication, multi-user state, and real persistence
A team-built product in a small group — the closest thing to a job before the job
An API consumed by both your own UI and external clients (curl, Postman)

Who this module is for

Level 3 graduates ready to own the full stack
Frontend developers tired of waiting on a backend team

By the end of The Full Stack

You can build almost any project.
You'll have solved 50+ LeetCode problems.
You'll be ready for a full-stack or backend developer career.

Career trajectory: Ready for a full-stack or backend developer role. Can ship complete products solo.

Prerequisites

Level 3 — React proficiency and comfort structuring a real app.

← Previous module lvl#3 Modular = Better Next module → lvl#5 Rule the Arena

Ready to start The Full Stack?

Registering for the Full Program includes every module, the guaranteed internship for above-average completers, and access to the Launchpad track for top performers.