Igor Machado

Data Engineer (Freelance) @ Flex.AG

About

I am a Mechanical Engineer with a Master’s degree in Machine Design and a strong foundation in applied mathematics, modeling, and analytical problem-solving. Throughout my academic and professional journey, I have developed and implemented mathematical models using Python, including regression-based predictive systems built with matrix computations and numerical methods. My background in engineering trained me to think systematically, break down complex problems, and design solutions that are both robust and efficient. Currently, I work with data pipelines and ETL processes using Python and SQL, transforming raw operational data into structured, reliable datasets to support analytics and business decisions. My focus is on building scalable, maintainable data workflows with attention to data quality and reliability. I am continuing to deepen my expertise in data engineering and applied machine learning, aiming to combine strong engineering fundamentals with practical data systems to solve real-world problems.

Country

Brazil

City

Rio de Janeiro

Industry

Information Technology & Services

Skill

VBA (Visual Basic for Applications), Banco de dados, Engenharia de dados, Pipeline de dados, Limpeza de dados, Validação de dados, Narrativa de dados, Teoria das probabilidades, Algoritmos de otimização, GitHub, Detecção de anomalias, Modelagem preditiva, Classificações, Aprendizagem profunda, Análise exploratória de dados, Aprendizagem contínua, Álgebra linear, Modelos de regressão, Análise estatística, ETL (Extração, transformação e carregamento)

Experience

Data Engineer (Freelance)

Flex.AG

2025-11 - Present · 11 mos

Working as a freelance Data Engineer, responsible for designing and maintaining data pipelines to support marketing analytics and business reporting. Built and maintained ETL pipelines using Python and SQL, transforming raw operational data into structured and reliable datasets. Implemented data cleaning, validation, and transformation logic to improve data quality and consistency. Developed automation workflows to reduce manual data handling and operational errors. Implemented logging and basic error handling to improve pipeline reliability and maintainability. Supported BI and reporting workflows using Google Sheets and Looker Studio

Industrial Packaging Development Engineer

Nefab

2023-8 - 2024-10 · 1 yr 3 mos

Porto, Portugal

I worked on the development of design solutions and the creation of concepts in packaging engineering, focusing on product and process optimization. I used 3D modeling software like IronCAD to create customized projects. My experience included continuous improvement in design processes and the development of efficient solutions to meet industry demands.

Engineer

Nefab

2023-8 - 2024-10 · 1 yr 3 mos

Porto, Portugal

Developed a structural analysis tool for pallets, leveraging matrix-based datasets and applying linear regressions to predict load capacity based on user-input dimensions. During this period, I was also part of the engineering team at Nefab, where I was responsible for managing and executing engineering projects.

Estagiário

Universidade do Porto

2022-2 - 2022-7 · 6 mos

Portugal

I developed a VBA macro to automate the modeling of a pneumatic component. The macro was triggered through an interface that allowed the user to input parameters for the modeled part.

Education

Universidade do Porto

Engineering

2022-9 - 2025-7 · 2 yrs 11 mos

Pursued a Master’s degree complemented by extracurricular activities, including an internship at Nefab and self-directed study in programming, machine learning, and data analysis tools.