Hello, I'm Luis Zermeno

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AI Application Engineer

Building Production-Ready LLM Applications

Specialized in developing practical AI solutions with LangGraph, Flask, and Claude. I design multi-agent systems, full-stack web applications, and voice AI applications that solve real business problems. Background in recruitment gives me unique insight into building tools people actually want to use.

Python • Flask • LangGraph

Luis Zermeno

Recent AI Projects

Spralingua German Teacher

Spralingua - AI German Teacher

An AI-powered German language teaching assistant that provides personalized lessons, grammar correction, and conversation practice using advanced language models.

View Details

About Me

I'm an AI Application Engineer focused on building production-ready LLM applications that solve real business problems. After spending a year deep in AI development—from multi-agent systems to RAG pipelines to voice AI—I'm now seeking opportunities to build impactful AI applications in Europe.

My approach combines technical implementation with practical thinking. Before transitioning to AI engineering, I spent 4+ years as a Talent Partner, which taught me how to identify what users actually need versus what sounds impressive on paper. This background helps me build AI tools that people want to use, not just technically interesting demos.

I specialize in Python-based LLM applications using LangGraph for agent orchestration, Flask for full-stack web applications, and Claude/GPT-4 for reasoning tasks. My projects focus on practical applications: a multi-language learning platform with real-time AI tutoring, voice-enabled interactions, and production-ready deployment on Railway.

I'm looking for AI Application Engineer roles where I can contribute to building, deploying, and iterating on LLM-powered products—not training models, but making them useful.

Certifications

M.B.A.

International Business Administration

Karlshochschule International University 2019-2021

Hugging Face Agents Course

Certificate of Excellence

Hugging Face 2025
Hugging Face Agents Certificate

The MCP Course: Unit 1

Fundamentals of MCP

Hugging Face 2025
MCP Course Certificate

Technical Skills

Languages & Frameworks

  • Python Python (Primary)
  • LangGraph LangGraph
  • LangChain
  • Flask
  • SQLAlchemy

LLM & AI Tools

  • OpenAI API (GPT-4)
  • Claude Anthropic Claude
  • Ollama Ollama (Local LLMs)
  • Langfuse Langfuse (Observability)

Databases

  • PostgreSQL

Development & Deployment

  • Git & GitHub Git & GitHub
  • Railway
  • Gunicorn
  • Claude Code

AI Specializations

  • Multi-Agent Architecture
  • Prompt Engineering
  • RAG Systems
  • Voice AI (TTS/STT)
  • Agent Design Patterns

Get In Touch

Feel free to reach out to me for collaborations or just a friendly chat.

Berlin, Germany

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