I will build ai agents, llm apps, rag systems and genai automation

R
roberto_olayvar
R
roberto_olayvar
Roberto O
build ai agents, llm apps, rag systems and genai automation
Full Screen
build ai agents, llm apps, rag systems and genai automation

About this gig

Build a practical AI application tailored to your business or product.


I develop custom AI agents, LLM applications, RAG systems, chatbots, and GenAI automation using modern AI and backend technologies.


What I can build:


AI agents and automated workflows

LLM-powered web applications

RAG systems for PDFs, documents, and knowledge bases

AI chatbots and assistants

LangChain and LangGraph workflows

OpenAI, Claude, Gemini, and local Ollama integrations

Vector database and semantic search solutions

FastAPI/Python AI backends

Third-party API integrations

AWS/cloud deployment


Tech stack:


Python, FastAPI, LangChain, LangGraph, Ollama, OpenAI, Claude, Gemini, vector databases, Docker, AWS, and REST APIs.


You will receive clean source code, a working implementation, and clear setup instructions.


Please contact me before ordering if you have a larger or custom AI project so we can define the right architecture and scope.


  • AI engine

    • ChatGPT
    • Claude
    • AWS Bedrock
    • DeepSeek
    • Meta Llama
    • Perplexity
    • Hugging Face
    • Ollama

  • Tools & frameworks

    • LangChain
    • LangGraph
    • LlamaIndex
    • OpenAI Agents SDK
    • Haystack
    • Langflow

  • AI solution type

    • AI agent
    • AI chatbot
    • Rag system
    • AI copilot

  • Purpose

    • Customer support
    • Lead generation
    • Knowledge management
    • Workflow automation
    • Document processing
    • Employee productivity
    • It support
    • Healthcare

Get to know Roberto O

Roberto O

Senior AI and Cloud Infrastructure Engineer

  • FromPhilippines
  • Member sinceJul 2026
  • Avg. response time1 hour

  • Languages

    English, Tagalog
Senior AI & Cloud Infrastructure Engineer with 8+ years of experience building scalable cloud-native applications, backend platforms, and AWS infrastructure. Experienced in Python, FastAPI, React, Terraform, Kubernetes, Docker, and serverless architectures. Recently focused on enterprise Generative AI solutions using OpenAI, Amazon Bedrock, LangChain, LangGraph, Retrieval-Augmented Generation (RAG), vector databases, and AI agents to deliver secure, production-ready applications.

My Portfolio

Related tags