Eager to collaborate

BETO FALLAS

Full-Stack Developer (Python & React) AWS Certified Solutions Architect — Associate

Building Python APIs, React SPAs, and RAG pipelines
that keep AI answers grounded in real data.

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Based in Costa Rica

Skills

What I work with

Stack

  • Python
  • REST APIs
  • JWT Authentication
  • PostgreSQL
  • React
  • Flask

Cloud

  • AWS EC2
  • S3
  • CloudFront
  • DNS & TLS
  • IAM
Certified

AWS Certified

Solutions
Architect

Associate

& Cloud Practitioner

Tools

  • Git & GitHub
  • GitHub Actions (CI/CD)
  • Nginx
  • Linux
  • Postman
  • Docker

Projects

What I've built

Live
GitHub Live Demo

FitNerd

A full-stack fitness app whose AI coach answers only from a curated library of real training-video transcripts — a RAG pipeline (Voyage AI embeddings in pgvector, Claude for generation) that says "I don't know" rather than guess. Layered Flask API with JWT auth, a React SPA, PostgreSQL, Dockerized on AWS EC2 with CI via GitHub Actions.

  • Python
  • Flask
  • React
  • PostgreSQL
  • pgvector
  • JWT
  • Docker
  • AWS EC2
  • S3
  • GitHub Actions
  • Supabase
  • Vercel
In Progress

Next Project

Work in progress. Stay tuned for updates.

Coming soon

About

Who I am

I'm a Full-Stack Software Engineer with hands-on experience building and deploying web applications end-to-end — from front-end interfaces to backend APIs, databases, and cloud infrastructure.

I'm currently seeking opportunities to collaborate on innovative projects while working on scalable systems and cloud-based architectures.

1 Live Project
2 AWS Certs
Location
Costa Rica
Focus
Full-Stack · Cloud
Status
Open to Work

Contact

Open to collaborations, feedback, and new opportunities.