Oleksandr T.

Your AI chatbot should answer customers and close deals at 3 a.m., not just look good in a demo. I'm an AI Chatbot Developer who builds the ones that run in production: 53 Upwork projects, 3,000+ hours, 100% Job Success, Top Rated.
🧠 AI Agent Developer · 🤖 AI Chatbot Developer · 📚 AI RAG · 💬 Telegram, Slack & WhatsApp bots · 🚀 18+ yrs coding

👋 About Me
I'm Alex, a senior AI Chatbot Developer and AI Agent Developer from Kyiv, Ukraine, with 18+ years of coding and bots since 2013, from simple Slack bots to AI RAG and LLM-powered AI agents. Before going full-time freelance in 2018 I built banking software for Barclays and Deutsche Bank, so every project gets enterprise-grade code: secure, tested and documented.

One agentic AI developer, no hand-offs: as your AI Chatbot Developer and AI Agent Developer I handle AI Chatbot Development, AI Agent Development, backend, admin dashboard and deployment myself. You get one point of contact, daily updates and a working demo every week.

🧠 What I Build
• AI Agent Development of multi-agent systems on LangChain, LangGraph, CrewAI and AutoGen with tool calling, memory and human handoff, for sales, support and lead generation (30+ agents shipped as AI agent builder)
• AI Chatbot Development of Python chatbots for websites, Telegram, WhatsApp, Slack and Messenger with Natural Language Processing (NLP) → 70%+ of customer queries resolved without a human
• AI RAG systems that ground Generative AI answers in your docs, CRM and databases on FAISS, Pinecone and Chroma, with source citations
• AI sales agents & deal closer chatbots to qualify leads, book calls and follow up 24/7 → up to 35% higher conversion
• AI Agent Development & AI agent automation with AI agent n8n workflows and API integrations connecting agents to your CRM → 400+ hours/month saved on average
• Full-stack ai chatbot development with React & Node.js admin dashboards, PHP and WordPress plugins, Stripe & Blockchain payments (bot development end to end)

🚀 Recent Projects
• CRM & booking SaaS: as AI Agent Developer I built a multi-tenant AI agent service of 3 agents (booking, sales, analytics) with 12+ API tools for 40+ businesses → bookings 100% automated, 60% less admin time
• Telegram networking startup: end-to-end AI Chatbot Development of a GPT-4 AI agent for double opt-in warm intros, shipped in 6 weeks → 1,200+ users, 300+ intros made, 85% opt-in rate
• Online community: AI Chatbot Development of a Generative AI chatbot with AI RAG over 500+ documents auto-translating for 5,000+ members in 12 languages → 80% of questions answered without an admin • AI product team (long-term): as AI Agent Developer and AI agent creator I build LangChain + LangGraph agents with AI RAG on MongoDB Atlas, adding reranking, retries and automated evals → 10K+ documents searchable, answer accuracy 72% → 91%, 40% lower LLM cost • Spreadsheet chatbot SaaS: as lead AI Chatbot Developer I built a Telegram + WhatsApp chatbot that answers natural-language questions via AI RAG over spreadsheet data (Data Analysis without formulas) → 10K+ users, 1M+ queries answered, 5+ years in production