Этот репозиторий представляет собой комплексную коллекцию технической документации, созданную для подготовки к собеседованиям на позиции **Senior/Team Lead Backend Developer**

Modern question-answering system based on Retrieval-Augmented Generation (RAG) with support for multiple LLM providers and vector databases.

This is a comprehensive dashboard management system for displaying information on old Android phones. Users create dashboards through a web application, add widgets, and bind phones via QR code. The phone receives data through an API and displays widgets in real-time.