I'm Elí

Data scientist & builder

6 years building production ML at fintech companies, unicorn startups, and global brands. I co-founded a ghost kitchen powered by data analytics, shipped open source tools to PyPI, and write about machine learning on Medium. Currently a Master of Data Science candidate at UBC, going deep on AI systems and real-world product problems.

Data science blog LinkedIn

Where I've worked

Startups, unicorns, and a global brand. Always on the data and ML side.

Kueski

Senior Data Scientist

Fintech · Fraud & Risk

Rappi

Growth Data Scientist

Unicorn On-demand Delivery · Growth

Heineken

Growth Data Scientist

CPG · B2B E-commerce · Growth

Insaite

Data Science Sales Engineer

AI as a Service · Strategy & Consulting

Axity

Junior Data Scientist

Digital Transformation Firm · Consulting

Projects

Selected work. Tools and dashboards I've shipped or maintain.

Megumi

Open sourcePython · PyPI

Feature engineering utilities for ML workflows, packaged for reuse across projects.

View on PyPI

Amazon_InsightCart

RAGStreamlit · Python

Amazon product search assistant over products and reviews: query expansion, hybrid BM25 and FAISS retrieval with RRF, cross-encoder re-ranking, and a grounded LLM answer — all in a Streamlit app.

View on GitHub

AiEO-Visibility-Challenge

TeamRAG evals · Python

Evaluates whether GPT, Gemini, and Claude give accurate, grounded answers on Canadian life and business. Three models answer in parallel with persona prompts; a scoring model uses BM25-retrieved source chunks to rate each response and rank the advisors — RAG for multi-LLM evals.

View on GitHub

Canada Food Pulse

DashboardPlotly Dash · Yelp

Interactive map of Canada's food scene from public Yelp data. Explore cities and categories.

Open live app
MunchGo WingsEat Munchin' Dogs

Ghost Kitchen — MunchGo, WingsEat & Munchin' Dogs

Founder Data-driven · Mexico City · Food Tech

Co-founded and scaled a data-driven ghost kitchen in Mexico City operating three virtual restaurant brands across brunch, wings, and hot dogs. Used Yelp and HERE Maps data to identify market gaps, benchmark competitors, analyze customer review patterns, and find optimal pricing. This turned raw location and review data into operational decisions that shaped the menu, branding, and acquisition strategy.

Founder & operator

Stack

Technologies and domains I work in regularly.

Python SQL Scikit-learn Plotly Dash PyPI / open source Machine Learning Fraud & Risk A/B Testing NLP UBC MDS

Right now

Pursuing my Master of Data Science at UBC. Focused on ML systems, LLM applications, and production analytics.