Free 10-Day Challenge

Real Projects. Real Feedback. Real Growth.

FrontendCheck helps you bridge the gap between writing code that works and building code that lasts. Learn to think like a senior developer — and show you're ready for the job.

10 days of challenges
Real-world scenarios
100% free
Takes 2 minutes to join
No spam, ever

Code that works isn't enough.

Most developers can build an app. But few can build apps that hold up to real-world change.

Evolving designs. Shifting requirements. Performance issues. Stakeholder feedback.

That's what separates juniors from seniors.

And that's what FrontendCheck is here to teach you.

Whether you're preparing for job interviews or trying to stand out as a junior dev, this is the missing experience you won't get from tutorials.

New Feature2m
A new feature needs to be implemented.
Design Feedback10m
Please make some adjustments to the layout.
Edge Case1h
The application fails in this edge case.
Mobile Support3h
The app should support mobile devices.
Performance Issue5h
The page is loading too slowly.
Accessibility1d
Need to improve keyboard navigation.
New Feature2m
A new feature needs to be implemented.
Design Feedback10m
Please make some adjustments to the layout.
Edge Case1h
The application fails in this edge case.
Mobile Support3h
The app should support mobile devices.
Performance Issue5h
The page is loading too slowly.
Accessibility1d
Need to improve keyboard navigation.

How do you become a job-ready frontend developer?

FrontendCheck gives you two paths to level up and get real-world experience that actually prepares you for professional development.

The Reality Check Challenge

A free 10-day coding simulation that mimics what it's like to work on a real product. Receive daily emails with evolving requirements. Your past decisions affect future tasks — just like on the job.

100% free to join
Real-world scenarios
10 days of challenges

Professional Code Review

Submit your solution for a detailed review by a senior frontend developer. You'll get a full write-up on what you did well, what could be improved, and how to start thinking like a mid-to-senior dev.

Senior frontend developer review
Detailed PDF report
10-day turnaround
"The best way to learn is by doing. These challenges simulate real-world pressure without the real-world consequences."

Most tutorials show you how to finish a project. FrontendCheck shows you what happens after that.

  • On the job, the code is never really “done.”
  • Requirements change.
  • Clients change their minds.
  • Performance breaks.
  • Design shifts.
  • You’re asked to adapt — and you need to do it without breaking everything.
  • Reality Check Challenges are designed to expose bad habits, test your architectural thinking, and help you learn what professional frontend development really requires.
Email requirement change
Claudia

Learn from someone who's been there

Hi — I'm Claudia. I've been working professionally as a frontend developer for over 7 years, leading teams and mentoring junior developers along the way.

I've made my fair share of mistakes, refactored messy code, and learned what truly makes software maintainable and scalable.

I created FrontendCheck because I know how hard it is to make the leap from learning to actually thinking like a professional developer. Tutorials teach you the "how," but real growth comes from navigating real-world scenarios — the kind you only experience on the job.

Ready to Level Up?

Ready to start thinking like a senior frontend developer?

100% free challenge
Senior frontend developer review