Mauricio Araujo
Machine Learning Engineer
Santo Antônio De Pádua,RJ
Summary
Machine Learning Engineer/Data Scientist with around 3 years of experience developing end-to-end data science projects. Proficient in Python and PySpark, specializing in Machine Learning and Deep Learning using major libraries (Scikit-learn, Keras, and TensorFlow). Experienced in implementing advanced Machine Learning solutions following MLOps best practices on cloud platforms like Databricks and Azure Machine Learning.
Overview
3
3
years of professional experience
1
1
Certification
Work History
Machine Learning Engineer
Ipiranga
11.2023 - Current
- Responsible for architecting and leading end-to-end machine learning solutions.
- Use of Python, PySpark, MLflow, and major ML libraries for development, monitoring, and model implementation on cloud platforms such as Databricks and Azure ML.
- Technical lead of B2B pricing solution with Machine Learning. Helped reduce model's MAE by 50% alongside reduction in number of features used by 86% and training time by 98%. Financial gains not yet quantified.
- Responsible for technical training, code review, and guidance of junior team members, promoting culture of continuous learning and innovation in machine learning practices.
Data Scientist
Ipiranga
02.2022 - 11.2023
- Worked in Pricing Data Science team at Ipiranga, generating data science solutions to enhance pricing strategies.
- Identified and evaluated non-invoiced orders, increasing detection accuracy by 30% using outlier detection models in Python/PySpark.
- Orchestrated pipelines with Kedro and Azure ML, monitoring via PowerBI.
- Conducted geospatial data analysis in Python, enhancing machine learning model features and insights.
- Led end-to-end machine learning pipelines, from ETL to visualization, improving churn model performance by 25% using MLOps, Kedro, PySpark, MLflow, and Power BI.
- Mentored interns and professionals in Machine Learning, with resources available on GitHub (https://github.com/mauricioarauujo/Machine_Learning_Algorithms).
- Leveraged Databricks and Azure ML, optimizing cloud-based data processing.
Data Science Intern
Ipiranga
02.2021 - 02.2022
- Served on Pricing Data Science team at Ipiranga, creating solutions to optimize pricing strategies.
- Led Micro-Market Review Project, devising recommendation system with Python geoprocessing techniques, yielding Power BI dashboard. Achieved 83% pilot phase acceptance rate by tactical team, extending system nationwide to automate competitor gas station detection and support pricing policy decisions.
- Executed churn prediction models using Python, Scikit-Learn, XGBoost, and MLflow, enhancing customer retention strategies.
- Earned Ipiranga Universe Explorer Award in 2021 for outstanding commitment to professional development through company's learning platform.
Education
Postgraduate - Machine Learning Engineering
FIAP
São Paulo, Brazil01.2025
Associate of Science - Data Science
UNESA
Rio de Janeiro, Brazil11.2023
Bachelor's Degree - Electrical and Electronic Engineering
State University of Rio De Janeiro
Rio de Janeiro, Brazil07.2021
Skills
- Python (NumPy, Pandas, Scikit-Learn, TensorFlow, Keras)
- PySpark
- Portuguese (Native)
- English (Intermediate)
- Machine Learning
- Deep Learning
- MLflow
- DevOps
- Azure Machine Learning
- Databricks
- AWS
- CI/CD
- Analytical Thinking
Certification
- Machine Learning Engineer with Microsoft Azure, Udacity, 2024
- Machine Learning Scientist with Python, Data Camp, 2023
- Cloud Machine Learning Engineering and MLOps, Duke University, 2023
- Big Data with PySpark Skill Track, DataCamp, 2022
- Time Series with Python Skill Track, DataCamp, 2022
- Machine Learning Training, Alura, 2021
- Business Intelligence, FIAP, 2021
- Advanced Blockchain, FIAP, 2021
Languages
Portuguese
Bilingual or Proficient (C2)
English
Intermediate (B1)
Timeline
Machine Learning Engineer
Ipiranga
11.2023 - Current
Data Scientist
Ipiranga
02.2022 - 11.2023
Data Science Intern
Ipiranga
02.2021 - 02.2022
Postgraduate - Machine Learning Engineering
FIAP
Associate of Science - Data Science
UNESA
Bachelor's Degree - Electrical and Electronic Engineering
State University of Rio De Janeiro
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