Most hiring tools filter developers out. CodeArena helps you win the ones you want, with a technical interview they actually enjoy: live coding, real problem-solving, and AI Critique, the only assessment that measures whether candidates can spot confident-but-wrong AI code and hold their ground when it pushes back.
Everything you need to assess, interview, and hire top engineering talent.
Watch candidates solve problems in real-time. See their actual problem-solving approach, not just the final solution.
Send timed coding challenges to candidates. Review their code execution replay frame-by-frame.
Track proficiency across languages and frameworks. Objective scoring shows real on-the-job ability.
Three simple steps to find your next engineering superstar
Choose from ready-made templates or build custom assessments. Mix coding challenges, verification mode, and prompting tasks to match your exact needs.
Send assessment links via email with one click. Track completion status in real-time. Candidates get a polished, professional experience that reflects well on your brand.
Watch code replays to see how candidates think and problem-solve. Compare Fundamentals Index scores across candidates. Make data-driven hiring decisions with confidence.
We built the technical assessment platform we wished existed when we were hiring.
Not algorithm puzzles alone. Test fundamentals, judgment, and practical AI-era work.
Focus tracking, paste detection, and behavioral analysis ensure integrity.
Review exact problem-solving approach, keystrokes, and thought process.
Launch your first assessment in minutes. No complex setup required.
CodeArena tests what traditional platforms miss: AI verification skills and coding fundamentals.
Traditional assessments focus solely on whether candidates can solve problems. CodeArena goes further, testing their ability to verify AI-generated code and revealing their coding fundamentals through our unique Fundamentals Index score.
The engineers who use AI best are the ones who need it least.
Test if candidates have the fundamentals before giving them AI tools. Our Verification Mode reveals who can actually spot bugs vs who blindly trusts AI output.
Our unique scoring system: verification_score - (prompting_score - coding_score). High score = strong fundamentals. Low score = AI dependent.
Code replay lets you see exactly how candidates approach problems. No more guessing if they copied solutions or genuinely solved them.
From junior developers to senior architects, we have the right challenges.
Fundamentals-first coding tasks that show problem solving, implementation, and tradeoff judgment.
Find bugs in AI-generated code. Tests debugging and code review skills.
Assess AI collaboration skills, critical for modern development workflows.
Architectural challenges for senior and staff engineering roles.
Evaluate code quality assessment and communication skills.
Build your own challenges tailored to each role and workflow.
A polished, professional assessment interface that candidates actually enjoy using.
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.
Every assessment includes code replay, anti-cheat monitoring, and detailed analytics
Try It YourselfJoin innovative engineering teams using CodeArena to find developers who can actually code.
Questions? Get in touch:
Everything you need to know about CodeArena for technical hiring.
Our multi-layered anti-cheat system includes:
All suspicious activity is flagged in the assessment results dashboard for your review.
We support 9 popular programming languages with full code execution and testing:
Each language includes version-specific runtime environments and supports all common frameworks and libraries.
Yes! You have complete flexibility to customize assessments:
The Fundamentals Index (FI) is our unique metric that measures a candidate's core programming skills independent of AI assistance:
This helps you identify candidates who will thrive with AI tools versus those who can't work effectively without them.
Fundamentals-first problem solving where candidates write code from scratch. Tests algorithmic thinking, data structures, implementation skill, and tradeoff judgment.
Candidates are given AI-generated code with bugs and must identify and fix them. Tests code review skills, debugging ability, and understanding of working code, critical for the AI-assisted development era.
We recommend including both types to get a complete picture of a candidate's abilities.
Candidates receive a unique assessment link via email. The process is simple:
The experience is polished and professional, reflecting well on your company's brand.
ATS integration is available on Enterprise plans. We currently support:
Integrations allow you to send assessments directly from your ATS and automatically sync results back to candidate profiles. Contact sales to discuss your specific integration needs.
Every assessment provides detailed analytics to help you make informed hiring decisions:
Still have questions?
Talk to SalesStart with the packs we can stand behind today, then expand as your loop grows.
Free forever, no credit card
For focused SMB hiring teams
For teams running consistent interview loops
Need SSO, dedicated support, custom problem sets, or high-volume hiring?
Contact salesCandidates never pay. Paid interviews run through the company workspace.