
Dmytro Y.
Full Stack Developer: Building Your Startups MVP with Nextjs and React
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Founder & Full-Stack AI Engineer
Kivara AI • Vollzeit
Nov 2025 - Present • 10 mos
Architected and developed Kivara AI, a production web platform and Telegram Mini App for AI roleplay and interactive storytelling. – https://kivara.app/ Key Responsibilities & Deliverables: • Built a scalable full-stack application using Next.js 16 (App Router), React 19, TypeScript, and Tailwind CSS. • Designed and implemented a persistent long-term memory RAG pipeline using PostgreSQL and pgvector with HNSW indexing to eliminate LLM context drift. • Developed multi-agent chat architecture, branching dialogue trees (forks), and real-time streaming interfaces. • Integrated multimodal AI workflows including context-triggered image generation and low-latency audio processing. • Implemented authentication, tier-based credit billing (Telegram Stars / card payments), and 5-language internationalization (next-intl).