Hi, I'm Alejo Marinsalda

Backend Developer | AI Engineer

Backend Developer experienced in building scalable systems, designing API-driven architectures, and implementing robust business logic within enterprise environments. I focus on translating complex operational needs into maintainable, high-performance backend solutions that prioritize data integrity, efficiency, and long-term scalability.

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Alejo Marinsalda

Tech stack

Backend

  • Python
  • FastAPI
  • PostgreSQL
  • Pandas

AI / LLM

  • LangChain
  • LangGraph
  • OpenAI API
  • Anthropic Claude
  • Google AI
  • RAG Pipelines
  • Vector DBs
  • Prompt Engineering
  • Fine-tuning
  • LangSmith

Infrastructure

  • AWS
  • Docker
  • Kubernetes
  • CI/CD
  • GitHub Actions

Tools

  • Git
  • System Design
  • Agile / Scrum
  • Code Review
  • Technical Docs

Live apps

All projects →

NomadAI

Live ↗

Production backend service.It's a chatbot that helps you choose your next ideal destination as a digital nomad, taking into account your hobbies, monthly budget, goals, visa requirements based on your nationality, and more.

AWS LambdaPythonAI