Expert n8n Workflow Automation | API Integrations | AI Agents
Welcome to my portfolio of production-ready automation systems. This repository demonstrates my ability to build robust, self-healing, and intelligent workflows that solve real business problems. Here is all of the Collection of my production-ready n8n workflows for API integration, AI agents, and business automation.
| # | Project Name | Key Tech | Description |
|---|---|---|---|
| 01 | Universal Lead Aggregator | Webhooks, JS, Validation | Centralizes leads from ads/webforms, normalizes data, and routes to CRM. |
| 02 | Dynamic PDF Invoice Engine | Binary Data, HTML, Email | Auto-generates and emails PDF invoices based on raw transaction data. |
| 03 | Enriched RevOps Pipeline | HTTP Request, HubSpot, Slack | Enriches lead data via external APIs and routes VIP prospects to sales teams. |
| 04 | Autonomous AI Support Agent | LangChain, OpenAI, Tools | An intelligent agent that handles support tickets and uses tools (Calculator, DB). |
| 05 | Self-Healing Data Scheduler | Error Handling, Loops | A resilient batch processor that isolates errors and prevents workflow crashes. |
| 06 | Secure Freelance Onboarding | Global Config, Trello | A configurable system for managing new client inquiries and contracts. |
| 07 | Capstone: Market Intelligence Bot | GenAI, NewsAPI, JavaScript | (Mastery Project) An autonomous research agent that summarizes daily AI news. |
- Core Platform: n8n (Self-Hosted/Cloud)
- Languages: JavaScript (Code Nodes), JSON, Markdown
- AI & LLMs: OpenAI (GPT-4), LangChain, Prompt Engineering
- APIs & Auth: REST, Webhooks, OAuth2, API Keys
- Reliability: Error Handling, Retry Logic, Data Validation
-
Clone/Download: Copy the
workflow.jsonfile from any project folder. -
Import: Open your n8n dashboard
$\rightarrow$ Workflows$\rightarrow$ Import from File. - Configure: Add your own credentials (API Keys) where indicated.
- Run: Click "Execute Workflow" to test.
I am available for freelance automation projects and consulting.
- Services: Custom Workflow Development, API Integration, AI Agent Deployment.
- Email: Reach me at
- WhatsApp: Chat on WhatsApp
- Phone: +8801887985705
- LinkedIn: [https://www.linkedin.com/in/abu-sufian-chowdhury-it-aiautomation-specialist/]
Built with ❤️ and n8n.