Front End • Language: TypeScript • Framework: Next.js Libraries: • React.js • React Query • React Hook Form • React Query Builder • Zod Back End • Language: Kotlin • Framework: Spring Boot • Authentication: Supabase • WebSocket: Socket.IO Libraries: • Testcontainers • google/cel-java • typescript-generator • google/jib Database • Database Management System: PostgreSQL Infrastructure • Hosting: SIT VM (Ubuntu) • Reverse-Proxy: Nginx • Container: Docker • CI/CD: GitHub Actions • Message Broker: Kafka • Object Storage: Cloudflare R2 Project Management & Tools • API Testing: Postman • Design: Figma • Code Editor: IntelliJ IDEA, Visual Studio Code • Cloud-Based Git Repository: GitHub • Project Management: Notion, GitHub