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Ship modern frontend products

React & TypeScript

Master component architecture, type-safe state, Next.js patterns, accessibility, performance, and frontend testing.

Best for: Frontend and full-stack developers preparing for product engineering roles.

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New · Web practice track

7 days. One React project. A completion certificate.

Practice 70 questions, build seven coding tasks, and earn a shareable certificate after your work is reviewed. Self-paced; use a computer for coding.

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Core skill path

Module 1
React
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Module 2
TypeScript
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Module 3
Next.js
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Module 4
Playwright
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This week

Fix the slow product dashboard

Identify unnecessary renders, unsafe state, and a flaky UI test in a realistic dashboard scenario.

Take the challenge →

Coding checks

The first practical coding set will focus on:

React state bugs
TypeScript modelling
Data fetching
Component testing
Open coding challenge

What you will prove

Model UI state safely
Build accessible React flows
Debug rendering and performance issues