Oleksandr D.

AI Developer | AI Engineer | AI Agent Developer | Node.js | OpenAI

🚀 AI Developer and AI Engineer with 3+ years of experience building AI-powered products, backend systems, APIs, automation platforms, and production web applications. I help startups and businesses transform ideas into scalable AI solutions using modern Large Language Models (LLMs), AI Agents, Node.js, and cloud infrastructure. As an AI Developer, I build intelligent applications that automate business processes, analyze data, generate content, answer customer questions, process documents, and integrate seamlessly with existing software. As an AI Engineer, I focus on designing reliable architectures that scale from MVPs to enterprise-grade platforms. 🤖 AI Developer | AI Engineer | AI Agent Developer My primary expertise is building AI-powered software with modern LLM technologies. I work with: OpenAI (GPT-4o, GPT-5) Claude Gemini DeepSeek Grok Ollama Local LLMs LangChain LangGraph AI SDK MCP Servers Vector Databases RAG (Retrieval-Augmented Generation) Prompt Engineering Function Calling AI Agents Multi-Agent Systems AI Workflows AI Automation As an AI Developer, I create AI chatbots, AI assistants, AI copilots, AI search engines, AI customer support systems, AI knowledge bases, AI document processing systems, AI content generators, AI analytics platforms, and AI-powered SaaS products. As an AI Engineer, I design secure, scalable AI infrastructures capable of serving thousands of users with production-ready architecture. ⚙️ Backend Developer | API Developer Strong backend engineering is the foundation of every AI system. I build: REST APIs GraphQL APIs AI APIs Authentication Systems Payment Integrations Microservices Worker Queues Background Jobs Webhooks Real-time Systems File Processing Pipelines Technologies: Node.js TypeScript JavaScript Express.js NestJS Prisma ORM PostgreSQL MySQL MongoDB Redis I optimize databases, improve API performance, reduce latency, and design backend systems that are maintainable and scalable. 🧠 AI Automation Businesses spend hundreds of hours on repetitive work. I automate: Customer Support CRM Workflows Lead Qualification Email Automation Content Generation Data Extraction PDF Processing OCR Pipelines Internal Tools Report Generation AI Assistants Business Operations I integrate AI with existing platforms so businesses can automate workflows instead of hiring additional staff. ⚛️ Full Stack AI Applications As an AI Developer, I build complete AI products from frontend to backend. Frontend stack: React Next.js TypeScript Tailwind CSS Zustand Redux React Query Applications include: AI Dashboards SaaS Platforms Admin Panels AI Chat Interfaces Internal Business Tools Customer Portals Analytics Platforms 🎬 AI Video Automation I specialize in Nexrender automation and After Effects rendering pipelines. Experience includes: Dynamic Video Generation AI Video Pipelines Template Automation Batch Rendering Personalized Videos Worker Pools Queue Systems Scalable Rendering Infrastructure My Nexrender systems process thousands of personalized videos automatically. 📱 Mobile AI Applications Using React Native, I extend AI products to mobile platforms. I build: AI Chat Apps AI Productivity Apps Business Applications Internal Mobile Tools Customer Apps All connected to scalable Node.js backends. ☁️ DevOps & Cloud Production-ready deployment includes: Docker Docker Compose Linux Nginx CI/CD GitHub Actions VPS Deployment Cloud Infrastructure Monitoring Logging Performance Optimization Security Best Practices 💻 Tech Stack AI & LLM OpenAI • GPT-5 • GPT-4o • Claude • Gemini • DeepSeek • Grok • LangChain • LangGraph • MCP • AI SDK • AI Agents • Multi-Agent Systems • Prompt Engineering • RAG • Vector Database • Pinecone • Qdrant • ChromaDB Backend Node.js • TypeScript • JavaScript • Express.js • NestJS • REST API • GraphQL • Prisma ORM Databases PostgreSQL • MySQL • MongoDB • Redis Frontend React • Next.js • React Native • Tailwind CSS • HTML • CSS Infrastructure Docker • Nginx • Linux • Git • GitHub Actions • CI/CD Automation Nexrender • After Effects • Workflow Automation • API Integration Why work with me? ✔ AI Developer focused on production-ready solutions ✔ AI Engineer with strong backend architecture experience ✔ AI Agent Developer building autonomous workflows ✔ Backend Developer specializing in scalable APIs ✔ Full Stack Developer delivering complete AI products ✔ Clean, maintainable, documented code ✔ Fast communication and reliable delivery Whether you need an AI Developer, AI Engineer, LLM Engineer, AI Agent Developer, OpenAI Developer, Node.js Developer, Backend Developer, API Developer, Automation Engineer, RAG Developer, Prompt Engineer, or a Full Stack AI Developer, I can build scalable AI solutions from concept to production. Keywords: AI Developer, AI Engineer, AI Agent Developer, AI Automation, OpenAI Developer, GPT Developer, ChatGPT Developer, LLM Engineer, Generative AI, AI Integration, Prompt Engineering, RAG, LangChain