Allysson de S. Pereira

I am a Data Scientist

About

Specialist in Data Science and Master's student in Numerical Methods (UFPR). With a solid statistical background and business vision across various niches, I develop Machine Learning and Analytics (BI) solutions focused on solving real challenges. My goal is to transform complex data into strategic results and measurable impact for the organization.

Allysson de S. Pereira

Data Scientist & Data Analyst

With solid experience in end-to-end data pipelines, statistical modeling and machine learning, I help organizations extract the hidden value in their data — from exploratory analysis to production-ready predictive models.

  • Location: São José/Curitiba, Brazil
  • GitHub: github.com/Allyssonsouza1
  • Email: allyssonsouza1@hotmail.com
  • Freelance: Available
  • Education: Bachelor's Degree in Economics
  • Focus: Data Science & ML; Data Analysis
  • Languages: Portuguese, English (Intermediate)

“In God we trust, all others must bring data.” — W. Edwards Deming

Skills

Technical expertise: Data ingestion, transformation and modeling.

Python (Pandas, NumPy, Scikit-learn) 70%
SQL & Databases (BigQuery, MySQL) 70%
Machine Learning 65%
Data Visualization (Power BI, Looker Studio, Tableau) 80%
Statistics & Probability 65%
Cloud & MLOps (GCP) 60%

Resume

Summary

Allysson de S. Pereira

Data Scientist and Data Analyst with experience in data analysis applied to process optimization, predictive models and dashboard development. Practical skills in Python and SQL Data viz (Power BI, Looker, Tableau) for data exploration and engineering. I act in identifying patterns and generating insights to support business decisions, always focusing on process optimization and performance improvement through data.

  • Brazil
  • allyssonsouza1@hotmail.com
  • linkedin.com/in/allyssondesouza

Education

Master's Degree — Numerical Methods in Engineering

In Progress

Federal University of Paraná (UFPR), Brazil

Coursework: Linear Models; Computational Methods for Statistics and Optimization.

Bachelor's Degree in Mechanical Engineering

2014 – 2019

Centro Universitário FIP-MOC - Brazil

Solid background in applied mathematics, statistics, process control, operational research and systems analysis, with a strong foundation in modeling, problem solving and analytical thinking, applied to understanding and optimizing complex processes.

Postgraduate in Data Science and Big Data

2024 – 2025

Federal University of Paraná (UFPR), Brazil

Training with an emphasis on applied statistics, exploratory data analysis, machine learning and data visualization, plus big data concepts and data-driven decision making, contributing to an analytical and systemic view in solving business problems.

Professional Experience

Process Technical Analyst (Data Focus)

Jan 2024 – Mar 2026

Grupo Boticário · Brazil

  • Development of Data Science projects focused on process optimization and real problem solving.
  • Development of operational indicators and performance tracking dashboards (Looker, Tableau).
  • Data modeling of production control systems (SAP, MES).
  • Construction of data visualizations to support decision making at tactical and managerial levels.
  • Ad hoc analysis and conduct of advanced studies of indicators, evaluating technical and economic feasibility of projects aimed at process optimization and performance improvement.

Continuous Improvement Analyst

April 2023 – February 2025

Klabin S.A · Brazil

  • Development of performance indicator dashboards (Power BI) to monitor operational performance.
  • Conduction of exploratory data analysis to identify bottlenecks and improvement opportunities.
  • Management of improvement projects based on ad hoc analysis and performance indicators.
  • Training of teams in the interpretation of indicators and performance metrics, as well as the conduction and monitoring of improvement actions.

Portfolio

A selection of data science and Analytics projects that demonstrate real-world applications and technical depth.

  • All
  • Machine Learning
  • Analytics
B2B Multiclass Classification

B2B Multiclass Classification

NLP + XGBoost + Generative AI for Food Service company classification

Clustering Project

Clustering Project

Tube clustering project for process optimization in the cosmetics industry

Churn Prediction

Customer Churn Prediction

Random Forest model with 95% accuracy (ROC) for e-commerce churn

Consumer Analytics

Consumer Analytics Dashboard

Monitoring of Consumer loyalty program KPIs

Aeronautical Intelligence Dashboard

Aeronautical Intelligence Dashboard

Strategic management of aeronautical assets

Time Series Analysis

Time Series

Time series modeling with classical algorithms (ARIMA, SARIMA..)

Operational Management Analytics

Operations Dashboard

Monitoring of key indicators for the Operations area

Services

Data Analysis & Insights

Exploratory analysis, statistical testing and reports to reveal actionable patterns in your business data.

Machine Learning Models

Custom predictive models (classification, regression, clustering) designed, trained and validated to solve real-world problems.

Dashboards & Visualization

Interactive and executive dashboards in Power BI, Looker or Python (Streamlit) that tell stories with data.

Contact

Interested in working together or have a data challenge to discuss? Get in touch — I'd love to hear from you.

Location

Brazil (Available remotely)

Email

allyssonsouza1@hotmail.com