ACALBERTO CASTELO

About

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Alberto Castelo

Applied ML engineer
Shopify

I am a lead applied ML engineer that enjoys solving complex problems and building products that have a direct impact on people's lives. Since 2021, I work at Shopify building the next generation of ecommerce search.

Prior to Shopify, I was a Data Science lead at Nextail, a fashion retail startup, where I led demand forecasting efforts.

Interests

  • Applied ML

    • Search
      • LLMs as a Judge
      • Re-ranking
      • Hybrid retrieval
    • LLMs
      • Fine-tuning
      • Prompting
    • Multi-agent systems
    • Recommender systems
    • Time series forecasting
  • Startups

    • AI business models
    • Product development

Tech stack

  • Programming languages: Python, Java
  • Frameworks and libraries: pytorch, transformers, lightning, deepspeed, scikit-learn, pandas, numpy
  • Databases: MySQL, PostgreSQL, BigQuery, Redshift
  • Data processing: Ray, Spark, Dask, DBT
  • Cloud: AWS, GCP
  • Misc: Docker, Kubernetes, Airflow