How to Build Your Own Codility
Replace Codility with a custom build. Skills-Based Talent Management for an AI-Driven World
Build Difficulty: 5/5
Build a working replacement in a weekend with AI tools
Estimated Timeline
Based on 27 features at Weekend Project difficulty, expect about One weekend with AI-assisted development.
Recommended Tech Stack
Full-stack React framework with API routes and server components
PostgreSQL database, auth, and real-time subscriptions
Utility-first styling for rapid UI development
Key Features to Replicate
Top features across 8 categories. See all 27 features
Security & Proctoring(5 features)
Heightened security measures for assessment integrity
Standard proctoring capabilities for secure test administration
Verification of candidate identity during assessments
Detection of plagiarized code and content in assessments
Enhanced video proctoring features for premium tier assessments
AI(3 features)
Support for developing emerging and in-demand AI prompt engineering skills
Identifies and evaluates skills to work with, build and integrate AI tools
AI-powered assistant integrated into the platform
Analytics & Reporting(2 features)
Advanced analytics and reporting on assessment results
Data-driven talent decisions enabling identification of skill gaps, AI upskilling opportunities, and subject-matter experts across engineering organizations
Assessment(2 features)
Role-specific asynchronous skills assessments that quickly qualify top candidates with snapshot evaluations
Predictive assessment of future job performance through structured technical interviews with interviewer tools and standardized workflows
Assessment Framework(2 features)
Rigorously researched assessment science infused throughout the platform by industrial-organizational psychologists
Innovative skills framework for assessing and mapping technical competencies
Content Library(2 features)
Curated library of assessment content mapped to specific technical skills
Pre-built library of coding assessment questions (Starter: 1,200+, Core: 1,800+, Custom: Full access)
Support & Services(2 features)
Personalized customer success support for custom tier users
Custom professional services available for implementation and optimization
Assessment Configuration(1 features)
Customizable weighted scoring for assessments
Cost Calculator
Keep Paying Codility
Build It Yourself
Total Cost Comparison
DIY hosting estimate based on Vercel + Supabase free/pro tiers (~$20/mo). Build time estimated from 27 features at very easy complexity.