I will build an ai customer service chatbot for whatsapp

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Sergio Caleb

About this gig

I will build a custom AI chatbot trained on your business documents

Most chatbots on Fiverr are built with no-code tools like ManyChat or Botpress. They look good in demos but break when you need something specific and you never own the code.

Mine are different.

I build with Python and real RAG technology which means your chatbot actually understands your documents, not just searches for keywords. The difference in response quality is immediately noticeable.

What makes this different:

  • Built with Python real code, not a drag-and-drop tool
  • RAG technology your chatbot reads and understands your actual content
  • Powered by GPT-4, Gemini, or Claude you choose the model
  • FastAPI backend ready to integrate into your website or app
  • Full source code delivered you own it completely, forever

What your chatbot can do:

  • Answer questions about your products, services, or internal content
  • Act as a 24/7 customer service agent
  • Guide clients through your sales process
  • Respond in your business tone and personality

Perfect for: SaaS companies, small businesses, agencies, coaches, or anyone who wants a chatbot that actually works and that they fully own.

Fast delivery. Real code. No templates.

Get to know Sergio Caleb

Sergio Caleb

I will build and optimize AI agents for sales and finance

  • FromMexico
  • Member sinceApr 2026
  • Avg. response time3 hours
  • Languages

    English, Spanish
Hi, I am Sergio, a developer specializing in AI automation and high-efficiency systems. I build and optimize advanced agentic pipelines and RAG architectures using Python to solve complex business logic. My focus is on creating autonomous workflows that are not just functional, but tailored to specific operational needs for maximum performance. I excel at identifying bottlenecks and refining data retrieval to ensure scalable, result-oriented solutions. If you need a disciplined developer to engineer precise, automated AI pipelines that deliver measurable ROI, let’s build together

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