I will build llm powered apps with javascript and python

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augustoromer212
A
augustoromer212
Augusto Romero
build llm powered apps with javascript and python
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build llm powered apps with javascript and python

About this gig

Need a production-ready LLM-powered application? I specialize in building full-stack AI apps, agentic systems and RAG pipelines that solve real business problems not just demos.

What I build:

  • Full-Stack AI Apps React JS + Python FastAPI backends with streaming chat UIs
  • MCP Servers & Tool Integration Connect your AI to any API, database, or internal tool via Model Context Protocol
  • RAG Pipelines LlamaIndex, Pinecone, Weaviate, pgvector for knowledge-grounded AI
  • LLM Integrations OpenAI, Anthropic Claude, Gemini, Mistral, local models via Ollama
  • Workflow Automation n8n, Make, Zapier with AI decision layers

Tech stack: Python · TypeScript/Node.js · LangChain · LangGraph · FastAPI · Next.js · React · PostgreSQL · Docker

Every project includes clean, documented code and a free strategy call before we start.

Ready to ship something real? Let's talk.

  • Programming language

    • TypeScript

  • Expertise

    • Algorithms & Data structures
    • Operating systems
    • Design
    • Databases
    • Testing procedures

  • Frontend framework

    • Angular
    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • FastAPI
    • Flask
    • Next.js
    • Node.js

  • AI & low/no code builders

    • Other

Get to know Augusto Romero

Augusto Romero

FullStack Developer, AI Developer

  • FromArgentina
  • Member sinceDec 2022
  • Avg. response time1 hour
  • Last delivery2 years

  • Languages

    English, Spanish
I’m a Full-Stack Developer and AI Engineer with 7+ years of experience building production-ready applications and AI-powered SaaS platforms. I help companies turn complex ideas into scalable, high-impact products. My expertise blends modern full-stack development (Node.js, React/Next.js, TypeScript, NestJS, PostgreSQL) with applied AI (LLMs, LangChain, LangGraph, RAG pipelines, tool-use agents, vector search, and workflow automation). I’ve built systems across multiple industries including HR, hospitality, logistics, education and productivity tools.

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