AI, Chatbots, WhatsApp & n8n Automation Architecture
Mateusz Kimont • Principal Full-Stack Engineer & AI Automation Architect
From Manual Bottlenecks to 24/7 Autonomous Operations
With 10+ years of Principal Full-Stack Engineering & DevOps experience, I don't just connect fragile no-code templates—I architect fault-tolerant, secure, enterprise-grade AI and workflow automation systems that integrate cleanly with your existing databases, payment gateways, CRMs, and legacy platforms.
⚡ n8n, Make.com & Custom Webhook Pipelines
Eliminate 20–40+ hours per week of repetitive copy-pasting, spreadsheet wrangling, and manual order routing.
- Self-Hosted & Cloud n8n Architecture: Dockerized n8n deployments on AWS/DigitalOcean/Linux with PostgreSQL persistence, queue workers, and full data privacy (zero per-execution SaaS tax).
- Multi-System Synchronization: Real-time two-way sync between HubSpot, Pipedrive, Salesforce, Stripe, WooCommerce, Shopify, Slack, Microsoft Teams, and Google Workspace.
- Automated Error Handling & Dead-Letter Queues: Built-in retry logic, webhook signature validation, rate-limit throttling, and instant Slack/Email failure alerts.
- Batch CSV / XLS / PDF Automation: Automated ingestion, validation, transformation, and database syncing of supplier feeds, invoices, and bulk client orders.
💬 WhatsApp Business API & Multi-Channel Bots
Engage leads in under 2 seconds on the messaging app they already open 50+ times a day.
- Official WhatsApp Business Cloud API & Twilio: Verified business templates, interactive buttons, list messages, catalog cards, and media/PDF invoice delivery.
- 24/7 Lead Qualification & Calendar Booking: Conversational agents that ask qualifying questions, score leads, update your CRM, and book meetings directly into Google Calendar / Calendly.
- Live Order Status & Self-Service Lookups: Securely queries your WooCommerce, Shopify, or custom SQL/REST backend to answer "Where is my order?" or process returns automatically.
- Multi-Language & Voice Note Support: Native fluency and AI translation across English, Polish, Spanish, and 50+ languages, including Whisper audio voice-note transcription.
🤖 Custom AI Chatbots & RAG Knowledge Agents
Deploy intelligent assistants that know your exact business policies, pricing, and documentation without hallucinating.
- Retrieval-Augmented Generation (RAG): Ingests your PDFs, Notion/Confluence docs, product catalogs, and SQL databases into vector stores (
pgvector, Pinecone, Qdrant). - Multi-Model Flexibility: Powered by OpenAI (GPT-4o), Anthropic Claude, Google Gemini, or private open-weight models depending on latency, cost, and compliance needs.
- Tool & Function Calling: Agents that don't just chat—they execute actions (generate quotes, calculate shipping, trigger n8n workflows, create support tickets).
- Human-in-the-Loop Escalation: Seamless handoff to live human agents on Slack, WhatsApp, or Zendesk/Intercom with a full AI summary of the conversation.
🔌 Model Context Protocol (MCP) & Legacy AI Bridges
Bridge the gap between modern AI agents and complex, high-volume enterprise platforms.
- Custom MCP Servers: Authoring Model Context Protocol integrations connecting AI coding and operational agents directly to Figma, internal REST/GraphQL APIs, and SQL databases (see Figma MCP Linux Guide).
- Legacy System Modernization with AI: Safe adapter layers connecting PHP 7/8 (Symfony/Laravel/Zend) or legacy JS (Backbone/Ember) systems to modern AI services.
- Automated Headless Browser & QA Agents: Playwright, Cypress, and Webdriver.io headless clusters for automated scraping, E2E regression testing, and visual monitoring.
Why Hire a Principal Full-Stack Engineer for AI & Automation?
Most "no-code automation agencies" hit a wall the moment an API requires custom OAuth2 token refresh, high-volume database indexing, complex SQL joins, custom PHP/Node webhook middleware, or AWS VPC security. Because I have spent 10+ years architecting systems handling 40M+ transactions/year and $1M+ e-commerce flows, I build automations that won't break at scale.