Luiz Otávio Luz

Generative AI Developer

Belo Horizonte, State of Minas Gerais, Brazil

4+ Years Exp

Summary

Luiz, a seasoned Data Scientist and Machine Learning Engineer with 4 years of experience, currently serves as a Machine Learning Engineer at Mercado Libre. His expertise is evident in leading projects like a Serving Embeddings Platform and enhancing an internal AutoML system. Luiz conducted a Proof of Concept for Generative AI tools, showcasing proficiency in Python, TensorFlow, PyTorch, and more. At Inter, he predicted customer assets using deep learning, implemented NLP for complaint handling, and conducted customer segmentation. Additionally,  he has utilized Chat GPT in his projects. His technical acumen includes Python, SQL, TensorFlow, Keras, and AWS services.

Technical Skills

Detailed View

Python Programming
Scikit-Learn
Deep Learning
Numpy
Pandas
Artificial Intelligence
Tensorflow
Amazon Web Services
Natural Language Processing
Pytorch
Docker
ChatGPT

Other Skills

Portuguese
English
Spanish

Work Experience

Machine Learning Engineer

Mercado Libre

Full Time | 17/10/2022 - Present

Remote | LATAM

  • Leveraged knowledge in machine learning and data engineering to architect, execute, and lead the end-to-end development of a Serving Embeddings Platform.
  • Maintained and enhanced an internal AutoML (Automated Machine Learning) system, introducing new features such as image classification support, to automate the entire process of creating a machine learning model.
  • Conducted a Proof of Concept for Generative AI (LLMs) Tools.

Skills: Key-value store (DynamoDB), Go (golang), Google Cloud Pub/Sub, Jenkins, Kibana, Datadog, Python, Poetry, TensorFlow, Scikit-learn, SHAP, auto-sklearn, AutoKeras, PyTorch, CLIP, OpenAI API, LangChain, Hugging Face.

Data Scientist

Inter

Full Time | 01/04/2021 - 01/10/2022

Remote | Brazil

  • Predicted customer's invested assets (Fixed income or variable income) using deep learning models for tabular data, resulting in a revenue of 15 million reais within a month, validated through A/B tests.
  • Identified the group of the best representatives to handle a customer complaint using Natural Language Processing (NLP), leading to the company's best reputation score in three years.
  • Performed customer segmentation based on business rules and machine learning models using a batch job with Airflow, resulting in a 10% increase in customer conversion for a segment above the user's original goal.
  • Developed a web app for customer sentiment analysis and transformed machine learning models into APIs.
  • Contributed to the design and development of an internal framework for the data science pipeline, covering cleaning, wrangling, visualization, modeling, deploying, and interpretation of data.
  • Conducted evaluations of machine learning models.
  • Conducted a proof-of-concept for predicting employee turnover using survival analysis and time series.

Skills: Python, SQL, Numpy, Pandas, Scikit-Learn, TensorFlow, NLTK, SciPy, Pytest, SageMaker, AWS Comprehend, S3, EC2, SNS, AWS Data Wrangler, Flask, Streamlit, TensorBoard, Pyspark, TPOT AutoML, SHAP Values, Docker, Airflow, MLflow, DVC, CML, Hugging Face.

Data Scientist

Sympla

Full Time | 31/01/2020 - 31/03/2021

Remote | Brazil

Data Scientist 

  • Conducted a Proof of Concept (POC) to detect clone events using a Siamese Neural Network and Nearest Neighbors.
  • Conducted video content moderation using computer vision.

Main tools used: Python, Numpy, Pandas, TensorFlow, Keras, PyTorch, OpenCV, FAISS, AWS Rekognition, S3.

Junior Data Scientist 

  • Utilized supervised machine learning techniques for content moderation, incorporating the detection of inappropriate words using Natural Language Processing (NLP) and images using computer vision.
  • Designed and developed an internal framework for fraud event detection based on business rules and machine learning.
  • Conducted the development of a web app for analyzing fraudulent transactions.
  • Conducted model monitoring.

Skills: Python, SQL, Numpy, Pandas, Scikit-Learn, TensorFlow, Keras, OpenCV, Streamlit, AWS Rekognition, S3, Redshift, Docker, TPOT AutoML, Datadog.

Intern

PUC Minas

Full Time | 01/02/2018 - 01/12/2018

Belo Horizonte, State of Minas Gerais, Brazil

  • Developed the website for Control and Automation Engineering using HTML5, CSS3, and JavaScript.
  • Actively participated in groups focused on continuous improvement.

Education

Control and Automation Engineering, Bachelor's Degree

PUC Minas

Major in Control and Automation Engineering

Artificial Intelligence and Machine Learning, Master's Degree

PUC Minas

Major in Artificial Intelligence and Machine Learning

Certifications

DeepLearning.AI logo

Generative AI with Large Language Models

DeepLearning.AI

Udacity logo

AWS Machine Learning Engineer

Udacity

Udacity logo

Machine Learning DevOps Engineer

Udacity

deeplearning.ai logo

Deep Learning Specialization

deeplearning.ai

Udacity logo

Computer Vision Nanodegree

Udacity

DeepLearning.AI logo

Generative Adversarial Networks (GANs)

DeepLearning.AI

DeepLearning.AI logo

Machine Learning Engineering for Production (MLOps)

DeepLearning.AI

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