Curated Coding Challenges
with Auto-Grading for Hiring
A vetted library of coding problems by difficulty and role. Candidates submit solutions, get auto-graded against real test cases, and you receive detailed assessment reports — no manual review needed.
Start Hiring Smarter — $15/moFor HR managers, startup founders & technical recruiters
Pro Plan
Everything you need to run technical hiring
Cancel anytime
- ✓200+ vetted coding challenges
- ✓Auto-grading with hidden test cases
- ✓Role & difficulty filtering
- ✓Detailed candidate feedback reports
- ✓Custom challenge builder
- ✓Unlimited candidates
Frequently Asked Questions
How does auto-grading work?
Each challenge includes hidden test cases. When a candidate submits code, our sandbox runs it against all test cases and scores the result instantly.
Can I add custom challenges?
Yes. After subscribing you can create your own problems, define test cases, and set difficulty levels tailored to your hiring pipeline.
What roles and difficulty levels are covered?
The library covers frontend, backend, data, and algorithms — from junior to senior level — so you can match challenges to the exact role you're hiring for.