Sergi Jajanidze - Portfolio

Skills

Frontend Development

JavaScript

TypeScript

React

Next.jsWeb ComponentsLit

Angular

Backend & API Development

Node.jsExpressGraphQL

MongoDBWebSocketSocket.IO

Architecture & System Design

Frontend ArchitectureMicro-frontendsDesign SystemsSSRMonorepo Architecture

AI & LLM Integration

Google GeminiOpenAIPrompt EngineeringStreaming Responses

Performance & Quality Engineering

Core Web VitalsAccessibility (WCAG, WAI-ARIA)Developer Experience

Build Tools & Frontend Tooling

WebpackViteRollupBabelESLintnpmpnpm

Infrastructure & DevOps

AWSDockerGitHub ActionsGitLab CI/CDJenkins

Certifications

Projects

Threads App

Focus: Full-Stack Architecture

Social discussion platform inspired by Reddit, built with Next.js 15, React 19, Prisma, and HeroUI. Users can create threads, post content, and engage through nested comments.

Live Demo Source Code

Real-time Editor App

Focus: Real-time Systems & Conflict Resolution

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.

Case Study Source Code

Excel App

Focus: Framework Internals & Performance

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.

Case Study Live Demo Source Code

Search App

Focus: Algorithmic Efficiency

JavaScript search engine built on a Trie (prefix tree) data structure for fast text lookup and autocomplete. Supports instant prefix-based searching, smart suggestions, and relevance-ranked results.