I will fix and optimize your ai agent, chatbot or llm prompts

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gustavosebast
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gustavosebast
Gustavo C.

About this gig

Is your AI agent or chatbot giving wrong answers, ignoring instructions, inventing information or calling the wrong tools? I will find the root cause and fix it.


I build and maintain LLM agents in production for an HR Tech platform (mainly Gemini, also OpenAI and Claude), including candidate screening agents and WhatsApp assistants. A big part of my job is designing prompts with strict context boundaries to reduce hallucinations and auditing AI-generated code for quality and security.


COMMON PROBLEMS I FIX

The agent misunderstands a specific instruction or user request

Hallucinations or answers outside your business info

Wrong tool or function calls in n8n or custom agents

Broken or inconsistent JSON / structured outputs

High token usage and slow responses


HOW I WORK

Step 1: I reproduce the issue with your real examples

Step 2: I find the root cause (prompt, context, memory, tools or code)

Step 3: I apply the fix and test it with multiple scenarios

Step 4: You get a short report of what changed and why


Please share access or exports of your prompts and workflow after ordering. Message me first if you are not sure which package fits.

Get to know Gustavo C.

Gustavo C.

AI Agents and n8n Automation Developer

  • FromBolivia
  • Member sinceOct 2026
  • Languages

    Spanish, English
Systems Engineer and Full Stack Developer building AI agents and automations that run in real businesses. I design WhatsApp AI assistants, LLM agents (Gemini, OpenAI, Claude) with reliable prompts and low hallucination, and n8n workflows that connect your CRM, WhatsApp, Sheets and APIs. In my current role at an HR Tech platform I built AI candidate screening, an AI resume builder with semantic matching, and n8n automations for sales and accounting. Clear communication, staged deliveries and secure code.