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I build custom AI-powered business tools that solve real operational problems. My flagship project: A complete ERP system built from scratch for a construction company, now in daily production use. Features include: - OCR-powered invoice processing (OpenAI, Google Vision, XAI integration) - Automated payroll calculation with legal compliance - Inventory management with AI product matching - Project management tools (Kanban, Gantt charts) - AI copilot with RAG capabilities - Self-hosted on Debian with automated backups Tech stack: Python, Django, PostgreSQL, REST APIs, AI/LLM integration What makes me different: I combine 10+ years of business and project management experience with AI development skills. I understand both the technical implementation AND the business problems you're trying to solve. I don't just write code—I build tools that people actually use. I'm particularly effective at: → Internal tools and custom dashboards → AI integration into existing workflows → Process automation that saves real hours → OCR and document processing solutions Languages: English, French, Romanian, Spanish, German Let's talk about what's slowing your business down—I'll show you how to fix it.

AI Engineering Lead and PhD researcher in AI/ML, certified in Claude by Anthropic. I design and ship production systems built around Claude: agents, RAG pipelines, and automations that actually make it to deployment Over the past 7 years I've helped more than 20 companies put AI into production across the US, Europe, and the Middle East. I've led engineering teams at startups large and small, and I bring a consistent track record as a high performer on the work I take on I post regularly on Medium, X, and YouTube on the latest in AI, ML, and tech, which keeps me on top of how fast the field moves, with an audience of over 10,000 across platforms. I share this work publicly partly because teaching a thing is the best test of whether you understand it What I build: - RAG chatbots and agents over your documents, PDFs, Notion, and knowledge bases - LLM fine-tuning on your domain data - Workflow automations that replace 40–80% of manual operations - Solution architecture, so you commit to the right stack the first time - Recovery work on stalled or underperforming AI projects Send over the project and I'll reply the same day with a plan, a clarifying question, or an honest pass

I build practical Python tools that automate repetitive work, extract and transform data, and connect systems through APIs. 🐍⚙️ My focus is simple: if a process is manual, repetitive, or data-heavy, I turn it into a reliable script, desktop tool, backend service, or automated workflow. 🚀 Core services: • Web scraping and data extraction 🌐, including dynamic and protected websites • Python automation ⚙️ for files, Excel, browser tasks, reporting, and internal workflows • API integrations and backend tools 🔗 using FastAPI and Flask • AI-powered workflows 🤖 for text processing, translation, content transformation, and structured data • Data cleaning and conversion 📊 across CSV, JSON, Excel, SQL, and external APIs • Custom Python utilities 🧰 for practical business operations Tech stack: Python, FastAPI, Flask 🐍 Playwright, Selenium, Scrapy, BeautifulSoup, Requests 🕷️ OpenAI and other AI APIs 🤖 PostgreSQL, MySQL, SQLite 🗄️ Pandas, openpyxl, schedulers, and automation tools ⚙️ HTML, CSS, JavaScript, and TypeScript 🎨 How I work: • Clear scope and practical architecture 🧠 • Clean, maintainable code 🧼 • Honest communication and realistic estimates 💬 • No unnecessary complexity 🚫 • Focus on reliability, privacy, and real-world use 🔒 For projects initiated through Upwork, communication and contracting remain on Upwork. ✅

👋 Need a python Full stack developer and Python AI Developer who can ship production-ready AI products, not just prototypes? I'm Roman, a Python Full stack Developer and Python AI developer with 5+ years in scalable web development and 2+ years in AI/ML. I have built AI systems for skincare, corporate LMS, real estate and SaaS, including a multilingual assistant for a company with 100+ branches and an AI SaaS chatbot platform built over 11 months. What I can help with: ✓ 50+ AI chatbot use cases with RAG, memory and business logic ✓ 20+ OpenAI / Claude / LLaMA integrations for SaaS, CRM, support, internal tools ✓ 100+ document sources for AI agents trained on company documentation, knowledge bases, enterprise data ✓ 10k+ request/day python fastapi API development for scalable AI backends ✓ 15+ React / Next.js dashboards connected to Python AI systems ✓ 30+ backend tasks across Database architecture, API integration, cloud deployment, performance optimization ✓ 1M+ data points for Custom machine learning workflows, benchmarking, Data Scraping, data pipelines, analytics ⚡My work combines python full stack engineering, python fastapi backends, LLM architecture and business-focused Software Development that reduces manual work and improves user experience. As a python full stack developer, I build full-cycle products from database design and API architecture to React / Next.js interfaces, deployment and long-term optimization. My core stack includes python full stack, Python Fastapi, Flask, Django, Node.js, React, JavaScript, TypeScript, PostgreSQL, SQL, MongoDB, Supabase, AWS, Azure, Vercel, REST APIs, WebSockets, Docker, Tailwind CSS, Material UI, and Git. As a Python AI Developer, I create AI chatbots, RAG systems, AI agents, document intelligence tools, recommendation engines, and automation workflows. I work with OpenAI, Claude, LLaMA, LangChain, LangGraph, LlamaIndex, vector databases, prompt engineering, ReAct agents, and llm integration for real business use cases. 🤖 AI/ML Solutions I Build 📌 LLM-Powered Applications → Custom AI chatbots with RAG (Retrieval-Augmented Generation) → Multi-agent systems using LangChain & LangGraph → Context-aware conversational AI that maintains conversation flow → Integration with GPT-4, Claude, LLaMA models 📌 Intelligent Automation & Agents → ReAct systems (Reasoning + Acting) for complex workflows → Document parsing and knowledge extraction (LlamaIndex) → AI agents trained on internal documentation and enterprise data → Multi-language support with automatic language detection 📌 Smart Recommendations & Analysis → AI-powered recommendation engines → Image analysis and classification systems → Custom ML models for specific business use cases → Performance optimization for production environments 📌 Full-Stack Integration → RESTful API development and integration → Real-time data handling with WebSockets → Database design (PostgreSQL, MongoDB, Supabase) → Cloud deployment (AWS, Azure, Vercel) 💡 Recent AI Projects & Real Results Recent work includes an AI skincare recommendation system that analyzes customer inputs and recommends products, a corporate LMS AI assistant for 100+ branches, a real estate rental assistant using landmarks and neighborhoods, and a full-stack SaaS AI chatbot platform with multi-agent logic and RAG capabilities. 🛠️ Technical Stack My experience covers product engineering and AI development. On the engineering side, I build SaaS platforms, dashboards, APIs, admin panels and automation systems as a python full stack developer ( backend python developer ) backend developer and web developer. On the AI side, I work as a Python AI developer and AI Developer, supporting chatbots, RAG systems, llm integration, OpenAI workflows, benchmarking, machine learning and data science tasks for real business use cases. ⚡My approach is simple: clarify the business problem, design cost-conscious architecture, build clean maintainable code, show progress through demos, and transfer knowledge so your team can use and maintain the system confidently. Additional relevant experience: I have worked around startup products and teams involving laravel, PHP, wordpress, sharepoint, moodle lti, flutter, Vue.js, material ui, HTML5, html front end, payment gateway, back end development, full stack developer react, full stack java, marketing saas, mls, mls idx, real estate photo, ai video, crypto bot, trading python, dask, pandas, data entry, oxwall, qa analyst, ux designer, product manager, it consultant, seo specialist, journalist content workflows, technical resume writing, python full stack, python fastapi, python ai, llm integration, openai, and custom business automation. 🤝If you need a reliable python full stack developer who can own the full product workflow, or a python ai developer who can build practical AI systems with python fastapi, python ai, llm integration, openai, and scalable architecture, send me a message and let’s discuss your project.

I build production-grade multi-agent AI systems that actually work, not just prototypes. Under the hood that means hybrid RAG pipelines, graph databases (Neo4j/Memgraph), and the plumbing most demos skip. My focus is on the hard parts: reliable agent orchestration, memory strategies that scale, and deterministic workflows that don't break in production. What I deliver: → Multi-agent systems with proper state management and error handling → RAG and knowledge graphs built for accuracy and low latency → LLM integrations with structured outputs and guardrails → Workflow automation that ties your tools together: REST, OAuth, webhooks, MCP, and third-party apps → Custom MCP servers and Claude builds →†’ Full-stack builds: Python and TypeScript APIs, React and Next.js frontends 8+ years building technology products. Comfortable owning projects end-to-end in async, distributed teams.

Most voice AI demos break on the first real call. Mine don't. As an experienced AI developer and AI Engineer, I build systems that handle 50+ calls/night at $0.10 each — where customers genuinely can't tell it's not a person. 📩 Send your project brief - I'll reply within 2 hours with a concrete action plan. 🏆 Why work with me? 🥇 Technical Reviewer for Manning Publications (Efficient AI in Practice & Enterprise RAG). 🥇 Winner of the Enterprise RAG Challenge. 🥇 Top-Rated AI Developer on Upwork with a focus on ROI. 🥇 Expert LLM Engineer specialising in hallucination-free RAG systems. Core Specialisations ❇️ AI Voice & Chatbot Development As a specialised AI developer, I build full voice pipelines: Deepgram/Whisper → GPT-4/Claude → ElevenLabs. Expert in chatbot development and conversational business logic for WhatsApp, Telegram, and Web. I work as a dedicated chatbot developer integrating systems with ManyChat, Botpress, and OpenAI API. Modern chatbot development setups to act as a 24/7 sales engine and support lead. ❇️ AI Agent Architecture & Autonomous Workflows I am an AI developer who excels in AI Agent architecture using LangGraph and CrewAI. Multi-AI Agent systems for lead generation, deal tracking, and complex CRM automation. Autonomous AI Agent workflows connected to Slack, Shopify, and enterprise backends. Every AI Agent I build is designed to scale and optimise business processes without increasing headcount. ⚙️ LLM Engineering & Advanced RAG As a senior LLM Engineer, I solve the "hallucination problem" for modern enterprises. Advanced LLM pipelines designed with a focus on Vector Databases (Pinecone, Weaviate, Milvus). Custom fine-tuning, prompt engineering, and production-ready LLM infrastructure. 🛠️ FULL-STACK TECH STACK & DATA SCIENCE As an AI Developer: Python, FastAPI, Docker, AWS, Asyncio. As a Python Developer: LangChain, LlamaIndex, LangGraph, PyTorch. As a Web Developer: Frontend frameworks, responsive platforms, and API integration. As a Data Scientist: Advanced data processing, analytics pipelines, and model evaluation. ❇️ WHAT YOU GET WITH EVERY PROJECT When you hire me as your AI developer, you get production-ready, scalable, and cleanly documented code. As a professional Python Developer, I ensure your system is robust, while my background as a data scientist guarantees that your data is processed with maximum analytical precision. Whether it's complex chatbot development for support or an AI Agent workflow for outbound sales, I handle the full CI/CD deployment on AWS. As a skilled web developer and agentic ai developer, I ensure your user interfaces are as smooth as the underlying AI models. By combining the precision of a data analyst with the agility of a Python full stack developer, I create applications that are data-driven. Every Python full stack developer setup I deploy is fully integrated with analytical tools, meaning a data analyst or data scientist on your team can easily track performance. 🌐 EXPERTISE ACROSS THE spectrum Whether you need a high-performance chatbot developer to automate customer service or a senior LLM expert to architect complex RAG systems, I deliver code that scales: For Enterprises: I act as a Lead Python Developer, agentic AI developer, and machine learning consultant, building AI agent automation workflows. My skills as a data scientist extract valuable insights from your historical enterprise data via AI agent RAG pipelines. For Startups: As a python full stack developer and AI agent builder, I focus on rapid deployment of AI sales agent and AI voice chatbot solutions. I leverage modern frontend and backend practices as a capable web developer building AI agent SaaS products. For Deep Tech & Analytics: My work as a data scientist and machine learning specialist ensures your systems are backed by solid statistics. From predictive modelling as a data analyst to building generative AI agent and AI voice assistant systems, I cover all your data needs. From simple Python Developer scripting to AI agent creation, my goal is Enterprise AI solutions with clear ROI. If you need a Senior Python Developer and AI agent expert who understands business logic and architecture, let's connect. As a web developer and chatbot developer, I build digital ecosystems including WhatsApp AI chatbot and AI phone agent systems. My machine learning pipelines and python full stack developer practices ensure your software is future-proof. This blend of python full stack developer and AI agent N8N skillset makes me the ideal partner, combining a data analyst, machine learning engineer, and AI call agent creator. 👉 Send me your project brief — I’ll get back to you within 2 hours with a free AI visibility audit. Last update: 01.07.2026