Run Coding Challenges That Produce Real Signal
Host recruiting contests, hackathons, and open challenges with live execution, leaderboards, and integrity detection candidates won't resent.
Live ranking
Languages supported
Integrity detection
Scale to thousands
Everything a modern coding challenge needs
Execution, leaderboards, integrity — in a single candidate-friendly platform.
30+ language runtimes
Monaco editor with live execution for every major language.
Test-case grading
Automated test cases determine pass/fail with per-case diagnostics.
Live leaderboards
Real-time rankings during challenges. Candidates see their standing as they code.
Question pooling
Randomize questions across candidates to prevent answer sharing.
Time-boxed challenges
Cap total challenge time or per-question time. Clock visible to candidate.
Integrity detection
Code coherence AI + keystroke biometrics for AI-proof challenge grading.
Bulk invite + export
Invite thousands via CSV. Export final leaderboard with scores and flags.
Convert to pipeline
Top-scoring candidates flow directly into your hiring pipeline with one click.
Why teams pick ClarityHire for this
Real workflow, built-in integrity, end-to-end pipeline — in one platform.
Contests that convert to hires
Most coding contest platforms disconnect from hiring. ClarityHire's leaderboard ties directly to your applicant tracking — top candidates move into the pipeline in one click, with integrity signals already captured.
- Live leaderboards during the challenge
- One-click conversion to hiring pipeline
- Integrity signals preserved in candidate record
Every signal, every session
Keystroke biometrics, face continuity, gaze analysis, and code coherence AI run silently throughout every assessment. Every signal feeds a per-candidate authenticity score you can review or automate on.
- Ten signal types including keystroke, gaze, face, paste events
- Per-signal authenticity score per submission
- Human-readable explanations on every flag
One platform, not five tools
Job boards, assessments, live video interviews, candidate tracking, structured feedback, and PDF reports — all in ClarityHire. Stop paying for five vendors.
- Replaces ATS + assessment + interview + proctoring
- Kanban pipelines with stage automations
- PDF hiring reports for stakeholders
How it works
Design the challenge
Pick questions from the library or build custom. Set time limit, integrity level, and languages allowed.
Invite candidates
Bulk CSV or email campaign. Each candidate gets a unique link.
They compete
Candidates code live with leaderboard visible. Integrity signals run silently.
Convert top scorers
Move winners into your hiring pipeline with pre-captured integrity signals.
Frequently asked questions
Can I host a public open-challenge?+
Yes. Public challenges accept anyone with a link. Email capture required so you can convert top performers.
What about plagiarism across contestants?+
Question pooling and randomization ensures no two candidates see the same question. Code coherence AI catches AI-generated answers across the board.
How do live leaderboards work?+
Leaderboards update in real time as candidates submit. Configurable anonymity: show handles, avatars, or anonymous IDs.
Can I run team challenges or hackathons?+
Yes. Team mode groups candidates into squads with shared editor access. Leaderboards rank teams instead of individuals.
How many candidates can compete at once?+
No hard cap. Platform handles thousands of concurrent coders. Enterprise plan for 10k+ concurrent.
Explore related features, roles, and use cases
ClarityHire is one platform. Every feature is built to work with the rest.
Host Your Next Coding Challenge on ClarityHire
Leaderboards, integrity detection, and pipeline conversion. Free to try.