Full-Stack Developer for SaaS Modules

I'm seeking a talented full-stack developer and UI/UX designer to build essential modules for my multi-user SaaS platform, designed to help businesses automate sales through WhatsApp and IVR. The immediate focus is on developing several key modules, with a priority on the n8n Self-Hosted Integration.

Key Modules to Develop:
- **n8n Integration (Self-hosted):** Set up and connect an n8n server, designing 8–10 industry-specific workflows.
- **Sales Funnel System:** Create visual and logic-based funnels for lead conversion, tailored per business.
- **OCR Integration:** Extract and validate SKU/text data from product label images, accommodating multiple occurrences and rotations.
- **ChatGPT Integration:** Develop a context-aware WhatsApp chatbot capable of handling general FAQs, sales inquiries, and customer support issues.
- **Admin Panel Enhancements:** Update the dashboard to include filters, user management, and funnel tracking.
- **FAQ Chatbot System:** Implement a trainable chatbot per business with a knowledge base upload, providing responses via WhatsApp and web.

Preferred Tech Stack:
- Node.js
- React
- MongoDB
- n8n
- OpenAI API
- OCR (Tesseract/PaddleOCR)

Timeline and Budget:
- Completion expected within 4–6 weeks.
- Budget ranges from ₹40,000–₹80,000 or $500–$1000, depending on scope and experience.

Ideal Skills and Experience:
- Proven expertise in full-stack development and UI/UX design.
- Experience with the specified tech stack.
- Ability to design and implement complex workflows and integrations.
- Strong problem-solving skills and attention to detail.
- Excellent communication and project management capabilities.

If you have the skills and experience to bring these modules to life, I look forward to your proposal!