CodArena
CodArena is a competitive coding and assessment platform for students, educators, and institutions. It bridges the gap between daily LeetCode-style practice and real, proctored company assessments, combining real-time contest infrastructure with AI-driven integrity monitoring.
Students practice on LeetCode every day but freeze inside real proctored assessments, cameras, tab-switch lockdowns, and time pressure create environment shock. Institutions, meanwhile, have zero visibility into who is actually placement-ready and no affordable way to run proctored mock tests at scale. Existing tools (HackerRank, Codility) are priced for enterprise hiring, not college preparation.
“Students practice on LeetCode. They prove themselves on CodArena.”
- Want a competitive but fair environment
- Motivated by XP, streaks, and leaderboard visibility
- Need practice and contests in one place
- Want hands-on proctored exam experience before placements
- Need credible, proctored assessments at scale
- Want department-level performance analytics
- Require easy student onboarding via invite links
- Need data on which students are placement-ready
- Want to identify weak areas before company drives
- Cannot manually proctor hundreds of students
| Platform | Proctoring | Gamification | Org Dashboards | Pricing |
|---|---|---|---|---|
| HackerRank | Limited | · | Enterprise | |
| LeetCode | · | Basic | · | Freemium |
| CodeChef | · | · | Free | |
| Codility | Enterprise | · | Enterprise | |
| CodArena | AI-powered | Full | SaaS |
- Full-screen contest arena with built-in code editor
- AI-powered face verification & live proctoring
- Multi-format contests, DSA, MCQ, SQL
- Wallet, XP, and clan-based gamification
- Organization dashboards with department analytics
- Auto-grading and AI-generated proctoring reports
| Feature | Reach | Impact | Priority |
|---|---|---|---|
| AI Proctoring | High | Critical | P0 |
| Multi-format Contests | High | High | P0 |
| Org Dashboard & Onboarding | Medium | Critical | P0 |
| Wallet & Gamification | High | Medium | P1 |
| Clan System | Medium | Medium | P2 |
- 01
Sign up & profile setup
- 02
Browse contests
- 03
Join & pay entry fee
- 04
Face verification
- 05
Enter contest arena
- 06
Submit code
- 07
View results & leaderboard
- 08
Earn XP & rewards
Organizations go from registration to first proctored contest in under 5 minutes
AI question generation eliminates manual test creation across DSA, MCQ, and SQL
Proctoring captures tab switches, camera feed, and violations with zero manual oversight
Students get instant AI-powered feedback after every contest
Real-time code execution at scale
Building a secure sandboxed engine that handles concurrent submissions without resource exhaustion, solved with queue-based processing and execution time limits.
Proctoring privacy concerns
Balancing integrity monitoring with user trust, addressed by making proctoring opt-in at the contest level with clear consent dialogs before face capture.
Cold start for a two-sided platform
Needed both students and institutions to create value. Launched public contests first to build a user base, then onboarded institutions on top of an engaged community.
- Proctoring is a must-have for institutional buyers, top decision driver in early conversations
- Gamification (XP, streaks, wallets) significantly improved D7 retention
- Narrow scope first (coding contests) then expand (SQL, MCQ) beats launching every format at once
- Shipping on managed infra freed up time for product differentiation instead of DevOps
- Mobile-responsive contest experience
- AI-powered personalized practice recommendations
- Placement drive management module for institutions
- API integrations with LMS platforms (Moodle, Canvas)
- Multi-language UI support
CodArena turned a clear market gap, credible, proctored, engaging coding assessments for institutions, into a shipped product that validates both its B2C engagement model and B2B value proposition over thirteen months of focused execution.
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