Sergi Jajanidze

Software Engineer | Front-End Engineer | Full-Stack JavaScript Engineer

Auth App

Jun, 2025

A secure and modular user authentication system built with Node.js, Express, and NeDB, implementing modern token-based authentication using JWT. The API supports user registration, login, logout, and token refresh, with role-based access control for protected routes.

Real-time Editor App

May, 2025

Real-time collaborative text editor built using Node.js, Socket.IO, and Quill.js, with storage in Redis and containerized using Docker for deployment/local development. The app allows multiple users to simultaneously edit the same document with instant synchronization across clients.

Excel App

Dec, 2024

Excel application created with vanilla JavaScript. Implemented custom web framework from the scratch (with state, routing, eventing, storage, DOM manipulations). Used Tailwind CSS for styling.

Search App

Jun, 2024

An implementation of full-text search, using a Trie data structure.

Prompts App

May, 2023

Prompts App helps users to discover, create and share creative AI-powered prompts. Created with Next.js 13, MongoDB & TypeScript.