Renato Rangel

Renato Rangel

Mentor
5.0
(36 reviews)
US$20.00
For every 15 mins
61
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First 15 mins free for your first session
ABOUT ME
Data Scientist
Data Scientist

Data scientist with a strong background in computer science and over 9 years of experience in big data, machine learning, and AI. Skilled in building scalable solutions using advanced NLP techniques, large language models (LLMs), and cloud platforms like AWS and GCP. Proven track record of delivering impactful data-driven solutions across healthcare, retail, and pharmaceutical industries.

Portuguese, English
Brasilia (-03:00)
Joined May 2020
EXPERTISE
9 years experience | 2 endorsements

REVIEWS FROM CLIENTS

5.0
(36 reviews)
Sofia Ahnen
Sofia Ahnen
December 2023
Very knowledgable and helpful! Solved all my problems!
Ziba Joon
Ziba Joon
November 2022
Renato has been very knowledgeable on the subject and wonderful to work with. I look forward to his mentorship over the months ahead as well.
lpp
lpp
May 2022
Great to work with Renato on machine learning, highly recommended!
Marissa Silverberg
Marissa Silverberg
May 2022
Really great and efficient support for adjusting R code in a really short time frame. Thank you so much!
lpp
lpp
May 2022
Renato is an awesome mentor and very knowledgeable. Highly recommended!
Vanessa Orozco
Vanessa Orozco
May 2022
Good advice and Great understandable code. Renato does also make the tasks on time and before deadline. I will recommend this mentor. He is also good explaining.
Luis Johnson
Luis Johnson
December 2021
Very patient and gave me resources so I can study more on python
Yeoh Jocelyn
Yeoh Jocelyn
November 2021
Mr Renato is a patient mentor and he explains everything precisely! He is an easygoing person as well and i look forward to create more fantastic project with him! good job and his work will definitely satisfy your needs!
Karthik Narasimhan
Karthik Narasimhan
November 2021
very helpful
Rita Lee
Rita Lee
November 2021
Building models with R
SOCIAL PRESENCE
GitHub
portfolio
Jupyter Notebook
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0
scheduler
CSP - Scheduler
Python
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EMPLOYMENTS
Data Scientist
Nayya Health, Inc
2022-08-01-2024-12-01
  • Designed, trained, and deployed machine learning models on AWS infrastructure to deliver real-time personalized decision support,...
  • Designed, trained, and deployed machine learning models on AWS infrastructure to deliver real-time personalized decision support, enabling users to select optimal medical plans based on contextual data analysis. This work contributed to creating a patent.
  • Designed and implemented workflows integrating large language models (LLMs) to enhance natural language understanding and automate data extraction of medical documents, and collaborated with engineering teams to scale these solutions for production deployment.
Python
SQL
Machine learning
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Python
SQL
Machine learning
Data Science
Snowflake
DBT
AWS
Scikit-learn
LLM
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Lead Data Scientist
Clude Health Tech
2021-02-01-2022-09-01

Led data science initiatives for a Brazilian healthcare platform, driving the development of innovative solutions and the company’s da...

Led data science initiatives for a Brazilian healthcare platform, driving the development of innovative solutions and the company’s data strategy.

  • Conducted comprehensive churn analysis, leveraging behavioral data to identify at-risk customers and recommend actionable retention strategies.
  • Collaborated with cross-functional teams to align data-driven insights with business objectives, optimizing healthcare outcomes and operational efficiency.
  • Established a scalable data infrastructure, enabling the integration and analysis of behavioral and clinical datasets.
Python
Pandas
Machine learning
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Python
Pandas
Machine learning
Google BigQuery
Google Cloud Platform
Keras
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Data Scientist
Multiple Companies
2015-07-01-2021-01-01
  • Developed and deployed predictive models for demand forecasting, employee retention, and customer behavior analysis, driving data...
  • Developed and deployed predictive models for demand forecasting, employee retention, and customer behavior analysis, driving data-driven decision-making across multiple industries.
  • Conducted statistical forecasting, customer segmentation, and marketing performance analysis to guide strategic decisions.
  • Designed and implemented data pipelines, analyzed datasets from social networks, employee metrics, and market trends to derive actionable insights.
Python
Machine learning
Data Science
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Python
Machine learning
Data Science
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PROJECTS
Flecha: a recommendation system for public examination questionsView Project
UNB
2017
This research presents a recommendation system for Brazilian civil service exams in Information Technology and Administrative Law. It ext...
This research presents a recommendation system for Brazilian civil service exams in Information Technology and Administrative Law. It extracts questions from unstructured sources like PDFs, classifies them using SVM models (with LinearSVC yielding the best results), and recommends questions proportional to topic prevalence in past exams. The system clusters similar questions for proportional recommendations, with optimal results achieved using fewer clusters and no decay function. This tool helps candidates prioritize study efforts based on historical exam patterns
Python
SQL
Machine learning
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Python
SQL
Machine learning
NLP
Scikit-learn
View more