I'm a Senior AI Integration Engineer and Python/Django/FastAPI developer with 10+ years of experience building production backend systems and AI-powered applications. Over the last two years, I've specialized in integrating LLMs (Claude, OpenAI GPT, Gemini, open-source models) into real business products systems that handle real users, real data, and real scale. If you want someone to integrate an LLM, build a RAG pipeline, or set up context engineering for your product and actually ship it to production, that's my core focus. I handle the full stack: the LLM layer, retrieval and context design, vector store, Django/FastAPI backend, auth, deployment, and monitoring. What I specialize in: *LLM & AI Integration* Claude (Anthropic) — Messages API, tool use, computer use, MCP (Model Context Protocol), extended thinking OpenAI — GPT-4/5, Assistants API, Responses API, function calling, structured outputs Google Gemini, Mistral, Groq, open-source models (Llama, Qwen) via Ollama / vLLM Multi-provider routing, fallback logic, and cost optimization *RAG & Context Engineering* Production RAG pipelines: ingestion, chunking strategies, hybrid search (BM25 + vector), reranking Context engineering, designing how the right information gets into the model's context window at the right time Agentic RAG, query rewriting, self-querying retrievers, and evaluation frameworks (Ragas, DeepEval) Document parsing for complex PDFs, tables, images (Unstructured, LlamaParse, Docling) *AI Agents & Chatbots* Agentic workflows with tool use, planning, memory, and multi-step reasoning Custom chatbots with persistent memory, streaming responses, and human-in-the-loop flows LangChain, LangGraph, LlamaIndex, CrewAI, Pydantic AI MCP server development to expose custom tools to Claude and other agents *Vector Databases* Pinecone, Qdrant, Weaviate, Chroma, pgvector, Milvus — including index design, metadata filtering, and hybrid search. *Python Backend (where the AI actually lives)* Django, Django REST Framework, FastAPI, Flask Async Python, streaming endpoints (SSE, WebSockets) for real-time LLM responses Celery, Redis, RabbitMQ for background AI jobs GraphQL (Strawberry, Graphene) *Databases* PostgreSQL, MySQL, MongoDB, Redis, Firestore *Cloud & DevOps* AWS (Lambda, EC2, ECS, Bedrock, S3, RDS, API Gateway), GCP (Vertex AI), Azure OpenAI Docker, Docker Compose, CI/CD pipelines Nginx, Gunicorn, uWSGI, monitoring & observability (Langfuse, LangSmith, Helicone) *Automation & Scraping* Playwright, Selenium, BeautifulSoup, custom automation bots (checkout, ticketing, inventory, lead scraping, LinkedIn automation). *Integrations* Stripe, third-party REST/webhook integrations, Firebase, Twilio, SendGrid, Swagger/Redoc API documentation. *Testing & Quality* Pytest, TDD, LLM evaluation pipelines, prompt regression testing. What I deliver: AI features that actually work in production, not just in the happy path Clean Django/FastAPI backends with proper architecture RAG systems tuned and evaluated for accuracy, not just "plugged in" Cost-aware LLM usage (caching, batching, smaller models where possible) Secure deployments, monitoring, and long-term maintenance If you're building an AI product, modernizing an existing Python/Django codebase with LLM features, or need someone who can own both the AI layer and the backend it sits on, let's talk.

I'm a Python developer and AI engineer with 10+ years of experience, running a 80-person agency (Go Wombat) with offices in Valencia, Tallinn, and Ukraine. Over the last few years my work has shifted heavily into AI. I build production RAG pipelines, LLM-powered products, and autonomous agent systems - not demos or prototypes that fall apart at scale, but things that run in production and get maintained long-term. Recent projects include a RAG-based troubleshooting system for a UK manufacturing client (Innovate UK funded), an AI investment research platform with OpenAI-powered analysis, LLM compliance automation for an AdTech company, and an AI music therapy product used in dementia and autism care. What I work with on the AI side: * Multi-agent systems and AI workflows using LangGraph, OpenAI Agents SDK, Claude Agent SDK, Google ADK, MCP, OpenClaw-based agents, and custom agent frameworks for tool and data integration * Production RAG systems using pgvector, Qdrant, Chroma, hybrid retrieval, reranking, knowledge graph enrichment, and RAGAS-based evaluation pipelines * Agentic automation with tool use, memory/context management, sandboxed execution, human-in-the-loop approvals, and workflow orchestration * LLM fine-tuning and adaptation with LoRA/QLoRA, synthetic datasets, domain-specific evaluation suites, and structured output validation * Working with OpenAI, Anthropic Claude, Gemini, Qwen, DeepSeek, GLM, Mistral, Kimi, and self-hosted open-weight models * LLMOps and AI observability with LangSmith, Langfuse, Opik, tracing, monitoring, alerting, evals, and regression testing * AI governance and EU AI Act readiness, including risk classification, technical documentation, audit trails, and monitoring workflows * Production deployment of AI systems with APIs, Docker, cloud infrastructure, secure integrations, and scalable backend architectures Focus areas: AI copilots, autonomous workflows, RAG platforms, internal knowledge systems, agentic tooling, AI automation, document intelligence, and customer-facing AI products. On the backend side I've been writing Python for a long time - Django, FastAPI, PostgreSQL, MongoDB, Redis, AWS (EC2, S3, Lambda, RDS, Elasticache), Docker, Kubernetes. That foundation matters a lot when you're building AI systems that need to hold up under real load and stay maintainable six months after launch. I've shipped products across healthcare, fintech, logistics, adtech, ecommerce, IoT, and SaaS. The range matters because AI problems look different depending on the domain - a compliance monitoring pipeline for an ad platform has almost nothing in common with a predictive maintenance system for factory equipment, even if both use LLMs under the hood. Because I run an agency, I can pull in the right people when a project grows beyond one person. Designers, mobile devs, data engineers - whoever the work calls for. But I stay personally involved throughout: I'm the one reading your requirements, scoping the work, and staying accountable for what gets delivered. Several of my Upwork clients have been with me for 5+ years. I mention that not as a credential but because it's the clearest signal I have that the working relationship tends to go well. If you want to talk through what you're building, I'm happy to take a look and give you an honest read before any commitment.

I’m a Senior AI Engineer with 9+ years of experience building and scaling AI-powered and Voice-enabled products that deliver measurable business results. I focus on integrating proven, cost-efficient AI solutions into existing systems instead of over-engineering from scratch. This helps teams ship faster, control costs, and deploy AI features that work reliably in production. 𝐖𝐡𝐲 𝐀𝐈 𝐚𝐧𝐝 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 𝐌𝐚𝐭𝐭𝐞𝐫 ● Stay competitive by automating workflows and improving customer interactions ● Future-proof your product with AI-driven features that are becoming standard ● Scale efficiently without increasing operational overhead 𝐇𝐨𝐰 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 Whether you’re building an AI or Voice chatbot, launching an AI-powered SaaS MVP, or enhancing an existing platform with LLM-based features, I can take your idea from architecture to production. 𝐈 𝐛𝐮𝐢𝐥𝐝: ● Clean, intuitive React-based interfaces for web applications ● Secure, scalable AI-enabled backends using Python and Node.js ● Fast, reliable APIs and data pipelines designed for growth 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐀𝐈, 𝐋𝐋𝐌 & 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 ● LLM integrations, RAG systems, conversational AI ● Voice AI agents using speech-to-text and text-to-speech pipelines ● AI automation, analytics, and intelligent workflows 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 ● Python (Django, FastAPI, Flask), Node.js (Nest.js, Express) ● Scalable APIs, system architecture, and AI integration 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 & 𝐒𝐚𝐚𝐒 ● React, Next.js, modern UI for AI dashboards and SaaS products 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 ● AWS, Azure, Docker, Kubernetes, CI/CD pipelines 𝐑𝐞𝐜𝐞𝐧𝐭 𝐀𝐈 𝐖𝐨𝐫𝐤 ● AI Voice Agent for automated customer interactions ● Healthcare platforms enhanced with AI workflows ● Sports analytics and prediction systems using AI I focus on senior-level ownership, clear communication, and AI solutions that work reliably in production. 💬 Let’s discuss how AI or Voice AI can give your product a real edge.

Hi, welcome to my profile! I’m a seasoned Full-Stack Python Developer and Data Engineer with 8+ years of hands-on experience in building scalable backend systems, modern web apps, and AI-powered solutions. I specialize in Prompt engineering, intelligent automation, LLM integration (OpenAI, LLama, Claude), and advanced web scraping using Playwright, Scrapy, and Selenium. My recent focus includes Retrieval-Augmented Generation (RAG), Vector DBs, and agentic workflows for production-ready AI systems. 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 & 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: 💠 Python | TypeScript 💠 FastAPI | Django | Flask | DRF 💠 React.js | Next.js | Svelte 💠 Node.js 💠 Generative AI (GPT-5, ChatGPT, OpenAI), Large Language Models (LLM), RAG (Retrieval-Augmented Generation), OpenClaw, Claude, Mistral, Whisper, Gemini, Zapier 💠 Chatbots & voicebots 💠 Vapi, Retell, Twilio, ElevenLabs 💠 Web scraping using Playwright, Scrapy, and Selenium 💠 Vector DBs: Pinecone | Weaviate | FAISS | ChromaDB 💠 PostgreSQL | MongoDB | Redis | Neo4j | Supabase 💠 AWS | GCP | Azure | Docker | Kubernetes | Cloud Run 💠 DevOps | GitHub Actions | CI/CD | Terraform 💠 Agents | AutoGen | CrewAI | OpenAgents 💠 RAG 💠 Web Scraping | Playwright | Scrapy | Puppeteer 💠 REST | GraphQL | gRPC | WebSockets 💠 Microservices | Async Architecture | Event-Driven Systems 💠 Testing: PyTest | Playwright | Cypress | Unit & E2E 💠 Data Pipelines | Apache Airflow | Pandas | Dask 💠 Security: OAuth2 | JWT | RBAC | OWASP Practices 💠 Agile/Scrum | Jira | Linear 💥 If you think we might work well together, feel free to contact me.💥

Hi, I'm Heindrick Dumdum, I'm an experienced web developer and I'm looking for someone to whom I can help with my expertise for their needs. I’m responsible for developing and evolving the business’s sites/software/applications using the latest software development infrastructure and methods. I’m also responsible for the development of analytics of any arising solutions in the site/software. I also develop technical and complex MS SQL Server Databases and also designs security and data protection measures and implements data-storage solutions and web applications through web application frameworks. It is the duty of the Backend Developer to develop sites/software through configuration driven behaviors and dependency injection. Here are what I specialize in. - LTI integration - stock & option trading algorithm development - ODOO - Django, DRF, FastAPI - AWS, GCP, Azure DevOps Kind Regards, Heindrick

AI-powered SaaS for founders and teams: LLM and RAG features built into full-stack products where they drive real ROI, not bolted-on demos. Python/React, MVP to enterprise, 100% job success on Upwork. I act as your fractional engineering lead for AI SaaS, finding where AI actually pays off and shipping it with senior depth. What I deliver: - AI-powered SaaS: LLM features, RAG pipelines, and memory workflows integrated into Python/Django/FastAPI backends. - Full-stack product engineering: React/Next.js front ends, multi-tenant architecture, APIs, and analytics dashboards. - Data and automation: ETL pipelines and integrations that feed clean data into your AI. - Cloud-native, secure deployments on AWS and GCP. Selected work: - DignifyX: an AI sales-training platform that scores live conversations and returns structured, actionable feedback. - IAB Advisor: AI built into a financial-advisory platform with subscriptions, multi-language, and real-time updates. - Property Management SaaS: a multi-tenant B2B platform built for scale. I lead delivery with a vetted CodeFulcrum team (Top Rated Plus) behind me, so it holds past a single contractor. Stack: Python, Django, FastAPI, LangChain, RAG, Vector DBs, OpenAI, Claude, React, Next.js, TypeScript, Node.js, PostgreSQL, AWS, GCP. Tell me what you're building and I'll come back with how I'd architect it, no charge.

I build backend APIs in Python — clean, working endpoints your app or frontend can rely on. Most of my work is REST APIs with Django and FastAPI, and I'm comfortable taking a feature from the idea to a working endpoint. What I can help with: REST APIs — building and extending APIs with Django REST Framework or FastAPI: clear endpoints, validation, error handling, and documentation. Database work — PostgreSQL and MySQL: designing tables, writing queries, indexing, and migrations. Practical data work that fits what you're building. Integrations — connecting third-party APIs and services into your backend: payments, external APIs, webhooks. Background tasks — Celery and Redis for jobs that run in the background, like emails, exports, or scheduled work. Fixing and extending — picking up an existing Django or FastAPI project, adding features, or cleaning up messy code without breaking what already works. I'm a good fit for: - New APIs, or adding endpoints to an existing backend - Smaller or well-defined backend tasks you want done properly - Extending or fixing a Django/FastAPI project - Clean code you or your team can build on later I keep things simple and do the task properly. Tell me what you need and I'll help you get it working. Tech: Python, Django, FastAPI, PostgreSQL, MySQL, Redis, Celery, Docker

Looking to streamline your business processes and save time? I help startups and growing businesses automate their workflows using **n8n, Zapier, ChatGPT, OpenClaw, Claude, and Python**, turning repetitive manual work into efficient, AI-powered systems. Hi, I am Deepak — an **AI Automation Expert** specializing in building intelligent automations that connect your apps, automate operations, and help your business run more efficiently. I design and implement **end-to-end automation workflows** that integrate CRMs, SaaS platforms, APIs, and AI models to eliminate manual tasks and create scalable systems. From **lead management automation and AI assistants to complex multi-step workflow orchestration**, I focus on building reliable automation solutions that save hours of work every week. Core Expertise =========== ⚡ **Workflow Automation:** n8n, Zapier, Make,com ⚡ **AI Automation:** ChatGPT, Claude, OpenAI API, AI Agents, LangChain ⚡ Data Automation & Analytics: Python scripts, automated reporting, Power BI dashboards, data processing pipelines ⚡ **Backend Integrations:** Python, FastAPI, Django, REST APIs, Webhooks ⚡ **Automation Use Cases:** Lead pipelines, CRM automation, AI assistants, data synchronization ⚡ **Data Automation:** Python scripts, automated reporting, data processing pipelines ⚡ **AI Applications:** RAG systems, vector databases (FAISS, Pinecone), prompt engineering ⚡ **Custom Tools:** Streamlit dashboards, internal automation tools ⚡ **Integrations:** Slack, Notion, Airtable, HubSpot, Google Workspace, Stripe, and more ⚡ **Cloud & DevOps:** AWS, Docker, GitHub Actions, CI/CD How I Can Help ============ ✔ Build **advanced n8n / Zapier / Make automation workflows** ✔ Develop **AI-powered automation systems** ✔ Connect **multiple tools and APIs into seamless workflows** ✔ Automate **lead generation, CRM updates, and notifications** ✔ Build **custom Python automation scripts and internal tools** ✔ Create Power BI dashboards for business reporting and insights ✔ Create **Streamlit dashboards for automation monitoring or analytics** My goal is simple: **build automation systems that reduce manual work, increase productivity, and scale with your business.** If you’re looking to **automate workflows, integrate your tools, or build AI-powered systems**, let’s connect and bring your automation ideas to life.

AI Automation Expert | Make · n8n · LLM Integrations · Python | Top Rated · 100% Job Success · 25 Projects I build automation systems that eliminate manual work connecting your tools, data, and AI into workflows that run without you. If your team is copying data between apps, manually triggering processes, or waiting on someone to run a report that is an automation problem. I solve it end to end using Make, n8n, Python, and LLM integrations built for your exact stack. WHAT I BUILD FOR YOU: ●Make and n8n workflows for business process automation, CRM sync, lead routing, and multi-app orchestration ●LLM integrations using OpenAI, Claude, and Gemini embedded into your existing tools and processes, not bolted on as a generic chatbot ●AI agents that reason across multiple steps, use external tools, and deliver structured outputs your team can act on immediately ●Python automation scripts and scheduled pipelines that replace hours of repetitive manual work every week ●Web scraping systems that feed live data into your AI workflows when no API exists so your automation never hits a dead end ●API development and integration using FastAPI connecting systems that were never designed to work together WHY CLIENTS CHOOSE ME OVER OTHER AUTOMATION FREELANCERS Most Make and n8n specialists stop where the API does. When your data source has no API competitor pricing, public directories, web-based portals they are stuck and your automation fails. I build the entire pipeline. From live data collection through AI processing to structured output delivered where you need it. No dead ends. No workarounds. TOOLS AND TECHNOLOGIES Make · n8n · OpenAI API · Claude API · LangChain · FastAPI · Python · Playwright · Selenium · PostgreSQL · MongoDB · Docker · Webhooks · REST APIs TRACK RECORD ●Top Rated on Upwork ●100% Job Success Score ●24 completed projects ●Average response time under 4 hours, every day HOW TO GET STARTED Tell me the process you want automated. I will reply within 4 hours with a clear approach and honest timeline.

I help companies who are searching for: “full stack developer”, “web application developer”, “Python developer”, “SaaS developer”, “automation expert”, “n8n developer”, “Zapier expert”, “web scraping developer”, “API integration developer”, and “AI developer” to turn their ideas into scalable, production ready software systems. Instead of building isolated features, I focus on creating complete working systems, from frontend interfaces to backend architecture, APIs, databases, automation workflows and data pipelines. 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 I build scalable, production ready web applications and SaaS platforms using modern technologies. 𝐓𝐡𝐢𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬: - Frontend development with React.js, Next.js, Vue.js, Angular, Tailwind CSS - Backend systems using Django, Django REST Framework, FastAPI, Node.js, Express.js, NestJS - REST APIs and modular backend architecture - Authentication systems, role based access control, JWT, OAuth - Database design using PostgreSQL (including pgvector) and Redis - Docker based deployment and scalable system structure 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 I automate business operations by connecting tools and eliminating repetitive manual processes. 𝐓𝐡𝐢𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬: - n8n, Make, Zapier, GHL and Google Apps Script automation - CRM workflows, lead routing and customer lifecycle automation - Google Sheets, email, Slack and API based automation systems - Scheduled workflows and event driven automation pipelines - Cross platform data synchronization between business tools 𝐖𝐞𝐛 𝐒𝐜𝐫𝐚𝐩𝐢𝐧𝐠 & 𝐃𝐚𝐭𝐚 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 I build advanced scraping and data extraction systems that convert web data into structured business intelligence. 𝐓𝐡𝐢𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬: - Python based scraping (Scrapy, Selenium, Playwright, BeautifulSoup, DrissionPage) - Proxy rotation and anti block handling systems - Large scale multi page data extraction - Lead generation and structured contact data systems - E-commerce, job and market data scraping - Data cleaning, transformation and storage pipelines 𝐀𝐈 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 I integrate AI into applications to automate decision making and enhance functionality. 𝐓𝐡𝐢𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬: - OpenAI (GPT-4/4o) and other AI Models integrations - AI agents and automation workflows - RAG based search and knowledge systems - AI-powered chatbots and assistants - Document processing and intelligent classification systems - Streamlit based AI dashboards and analytics tools 𝐒𝐲𝐬𝐭𝐞𝐦 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 & 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 I connect multiple tools and platforms into unified business systems. 𝐓𝐡𝐢𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬: - API integrations across services and platforms - CRM and SaaS system integrations - Stripe payments and subscription systems - Multi service data pipelines - Backend orchestration for operational workflows 𝐖𝐡𝐚𝐭 𝐈 𝐅𝐨𝐜𝐮𝐬 𝐎𝐧: - Building complete systems, not just code - Designing scalable and modular architectures - Automating real business operations - Connecting software + data + AI into one ecosystem - Delivering production ready solutions 𝐖𝐡𝐨𝐦 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡: I work with businesses that need: - Full stack SaaS applications - Automation of internal workflows - Data extraction and scraping systems - AI-powered tools and platforms - System integration across multiple tools - Custom backend and API development Most of my clients are scaling businesses that need to move from manual operations to automated systems. Let’s Build Your System If you need a web application, automation workflow, AI system or data pipeline, I can design and build a complete solution tailored to your business. Send me a message and let’s discuss your project.