Mateo K.

Full Stack Developer with 5+ years of experience building AI-powered web applications. I was part of the founding team at an AI startup where I built everything from RAG pipelines and AI chatbots to high-performance Next.js frontends — so I bring both startup speed and production-level quality. I specialize in Next.js, TypeScript, TailwindCSS, Supabase, and AI integration. Whether you need a full web app from scratch, an AI-powered feature, or performance optimization, I've done it in production at scale. My expertise includes: Frontend: React, Next.js 15, TypeScript, TailwindCSS, Framer Motion Backend: Node.js, Hono, REST APIs Database: Supabase, PostgreSQL AI/ML: RAG Systems, LLM Integration, AI Chatbots, Prompt Engineering Mobile: React Native, Expo Infrastructure: Vercel, Railway, LiveKit/WebRTC Languages: Greek (Native) • Albanian (Native) • English (Fluent) As a professional I will provide: Daily updates and constant communication — I'm responsive and easy to work with Full project lifecycle delivery, from prototype to production Clean, reusable, and well-documented code Experience shipping fast in startup environments without cutting corners I'm friendly, communicative, and genuinely enjoy turning ideas into live products. Feel free to reach out — let's build something great together.