JPJoão Vitor Pinheiro
@joovitorpinheiro
Machine learning engineer specializing in lending systems, scalable data pipelines, and ML-driven business automation.
BrazilWhat I'm looking for
I am a Machine Learning Engineer with hands-on experience refactoring large lending valuation systems, building scalable PySpark pipelines, and automating end-to-end data and model workflows. At Nubank I improved ETL performance, reduced data landing time by 34 hours, co-developed a low-code dashboard framework that cut a full-day reporting task to five minutes, and contributed to fraud detection and catalog-driven transformation frameworks.
Previously, as a Data Scientist at EloGroup Consulting I delivered a forecasting solution that produced significant contractual savings, built ensemble forecasting pipelines, and implemented production ML pipelines on Azure with Databricks, MLflow and Azure Data Factory. I combine statistical rigor, production-grade engineering, and user-focused tooling to drive measurable business impact.
Experience
Work history, roles, and key accomplishments
NURefactored Lending valuation framework from Scala to Python, built PySpark pipelines and automated business sanity checks, reducing data landing time by 34 hours and accelerating lending decision workflows. Developed experimentation logic for A/B tests, low-code dashboards that cut weekly reporting from one day to 5 minutes, and automation for library deployment via GitHub Actions.
Data Scientist
EloGroup Consulting
Jun 2021 - Sep 2022 (1 year 3 months)
Delivered a forecasting solution for a major São Paulo gas distributor that reduced contractual fines and saved ~R$200M in the first three months by deploying ensemble models and end-to-end ML pipelines in Azure. Implemented clustering, LGBM, SARIMAX ensembles, and interactive Streamlit tools for stakeholders.
Education
Degrees, certifications, and relevant coursework
FAFederal University of Amazonas
Bachelor of Science, Industrial Engineering
Completed a Bachelor of Science in Industrial Engineering at the Federal University of Amazonas in 2023.
CGCoursera (Google)
Professional Certificate, Data Analytics
2023 - 2023
Completed the Google Data Analytics Professional Certificate specialization via Coursera in 2023.
Tech stack
Software and tools used professionally
Availability
Location
BrazilAuthorized to work in
Job categories
Skills
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