LF.
Luiz Fernando

Hey, I'm Luiz

I’m a Machine Learning Engineer & Data Engineer who loves building data products and advanced ML models to solve real-world problems.

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About me.

I’ve been coding for over five years, beginning my journey in 2020. Initially, I contributed to various university projects, working with Python, C++, and C. During this time, I developed a strong foundation in programming fundamentals and problem-solving skills.

As I delved deeper, I discovered my passion for data science, machine learning, and data engineering. I studied optimization, data pipelines, and the art of crafting data products to meet real business needs. I’m currently working as a Machine Learning Engineer, where I apply these skills to projects impacting more than 100 million customers at Nubank. My focus is on designing and deploying robust ML solutions that drive tangible results.

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Experience

Here’s a quick overview of my professional background:

Nubank Experience

Machine Learning Engineer

Nubank • 2022 - Present

  • Implemented and deployed risk and spending ML models in both online and batch environments, increasing predictive performance and business value.
  • Developed a monitoring platform using Spark Scala for key metrics, streamlining dataset creation and enhancing analytics for stakeholders.
Data Engineering

Data Engineer

MGITech/Lagid • 2021 - 2022

  • Built robust ETL pipelines from transactional SQL databases to business dashboards, significantly improving the company’s analytical capabilities.
Data Scientist

Data Scientist

Huawei/Embrapii • 2021 - 2022

  • Collected and refined sensor data for optimized positioning of solar panels at a photovoltaic generation plant.
  • Stored time-series data in NoSQL databases, enabling real-time analysis and performance insights.
  • Modeled and trained high-accuracy ML models to maximize energy output and operational efficiency.

Projects

PUMLE

A comprehensive data engineering pipeline for geological carbon storage applications in Brazilian reservoirs. PUMLE consolidates simulation outputs into multidimensional arrays and offers export functionality in multiple formats (NumPy, Zarr, MAT-files, CSV), including cloud uploads.

View on GitHub

Car Plate Detection

A computer vision solution built with Python and YOLO for identifying and extracting characters from Brazilian car plates.

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Bin Packing

A classic implementation of the Variable-Sized Bin Packing Problem (VSBPP), built entirely in C++ for high performance.

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Branch and Bound

An implementation of a classic algorithm for solving integer linear programming problems, built using Python and MIP.

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Numpy from Scratch

A ground-up implementation of key NumPy functionalities to manipulate high-dimensional arrays, developed in C for efficiency.

View on GitHub

Extracurricular

Trilha

Trilha • 2024 - Present

Serving as a teacher and senior member, helping new tech students at university develop foundational skills and hands-on experience.

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TAIL

TAIL • 2021 - 2022

Acted as a member and project leader in the Artificial Intelligence and Technology League at UFPB, building meaningful projects and forging valuable connections.

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Curriculum

Curriculum Overview View Full CV (PDF)

Education

University Program

BSc in Data Science and Artificial Intelligence

Federal University of Paraíba • 2020 - 2025

  • Specialized in Data Science, Machine Learning and Data Engineering

Certifications & Courses

List any professional certifications or special courses you've completed here.

Certification 1

Huawei HCIA AI 3.0 Certification

Earned an advanced understanding of AI and neural networks.

Certification 2

Neural Networks and Deep Learning Specialization

Completed an intensive series of courses covering neural networks in an advanced perspective.

View Certificate

Contact me.

I’m always eager to explore new opportunities and take on exciting projects. If you have something in mind—or simply want to say hello—feel free to reach out.

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