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Gerardo1909/README.md

Hi, I'm Gerardo Toboso 👋

📍 Buenos Aires Province, Argentina · Remote | Fullstack Software Engineer | Cloud & Serverless Architect | Data & Causal Inference

AWS TypeScript React Node.js SQL Python FastAPI PyMC Git Docker

I build systems that stay fast, secure, and cost-aware under pressure — from fintech workflows and real-time architectures to data pipelines and causal decision engines.

Now

  • Fullstack Software Engineer | Cloud & Serverless Architect at a stealth US mortgage platform.
  • Reduced redundant backend calls by 22M invocations per week, cutting AWS Lambda and DynamoDB costs.
  • Secured 71M historical records, redacting plaintext OAuth/API credentials and adding automated safeguards.
  • Replaced polling with API Gateway WebSockets + DynamoDB Streams for sub-2s updates on critical loan events.
  • Orchestrated 50+ AWS Lambdas and 30+ external APIs to reduce loan closing times from 30 days to under 7.
  • Built resilient serverless backends with TypeScript, SQS, Cognito, and React for a platform serving 200+ clients.

Featured

𝟏𝟗 nineteen (Featured) – local personal assistant with a claude-like interface for pc-only machines.

Selected Projects

GitHub Activity

GitHub Contribution Graph

Latest Technical Writing

Connect

LinkedIn Medium Email


Recognition & Stats

  • Technical Lead and Backend Developer at Bayes Plurinacional for Bayesian Causal Inference.
  • Developed internal tools used by 50+ engineers/students daily.
  • Built and shipped 10+ production-grade data pipelines.

Philosophy

Complexity is the enemy. I document decisions, measure impact, and build systems that are reliable by default.

Random Facts
  • I prefer a clean CLI over a complex GUI any day.
  • Can explain MCMC while making a decent espresso.
  • Fan of "Software Engineering at Google" practices.
  • Currently reading: "The Book of Why" by Judea Pearl.

Pinned Loading

  1. iot-etl-pipeline iot-etl-pipeline Public

    Pipeline batch ETL con PySpark y Apache Airflow para procesar millones de lecturas de sensores IoT, transformándolas en un Star Schema optimizado para analytics de manufactura inteligente.

    Python

  2. fintech-flow-dbt fintech-flow-dbt Public

    Pipeline de Analytics Engineering para un ecosistema Fintech. Basado en dbt y DuckDB para transformar datos bancarios crudos en marts analíticos confiables, testeados y documentados.

  3. booking-ba-scraper booking-ba-scraper Public

    Pipeline de extracción en formato CSV de hoteles en Buenos Aires desde Booking.com

    Python

  4. causalito causalito Public

    Causalito - Agente RAG orientado al campo de la inferencia bayesiana causal. Implementado usando Langchain, chromadb y modelos LLM avanzados.

    Python 1

  5. nineteen nineteen Public

    Un asistente personal de IA, ligero y pensado para ejecutarse únicamente en CPU en tu máquina local. Soporte de herramientas, modelo por defecto 1GB<. 𝟏𝟗

    Python

  6. priceinsight priceinsight Public

    Optimización de precios con inferencia causal bayesiana. Simula escenarios y maximiza beneficios con probabilidades reales.

    Python