Alexandre - Data Scientist

Technical Skills

How I interact with technologies in my daily work

alexandre@skillset:~$

Python

>>> if isinstance(alexandre, PythonExpert) and alexandre.experience > 5: return "Automation, analysis, and APIs? Just call me!"

Automation, analysis, and APIs? Just call me!

SQL

sql> SELECT skill, proficiency FROM expertise WHERE developer = 'alexandre' AND skill LIKE '%SQL%' HAVING proficiency = 'Advanced' /* Optimized query, indexes used! */

skill: SQL | proficiency: Advanced

Pandas

>>> df = pd.read_csv('challenge.csv') df.groupby('problem').apply(alexandre.solve) # Result: insights ready for decision-making

DataFrame transformed successfully!

Docker

$ docker build -t alexandre/solution:latest . && docker run --rm -e PROBLEM=complex alexandre/solution:latest

Container running... Problem solved!

Power BI

DAX> CALCULATE([Insights], FILTER(ALL('Projects'), [Author]="Alexandre" && [Level]="Advanced" ) )

Interactive dashboard created!

Git

$ git commit -m "feat: robust solution delivered by Alexandre" && git push origin main

[main abc123] feat: robust solution delivered by Alexandre

MongoDB

> db.skills.aggregate([ { $match: { user: "alexandre", skill: "MongoDB" } }, { $project: { proficiency: 1, pipelines: 1 } } ])

{ "proficiency": "Advanced", "pipelines": "Expert" }

Airflow

>>> with DAG('alexandre_pipeline', schedule_interval='@daily') as dag: run_etl = PythonOperator( task_id='run_etl', python_callable=alexandre.advanced_etl )

Airflow pipeline active and monitored!

Matplotlib

>>> import matplotlib.pyplot as plt plt.style.use('alexandre_custom') plt.plot(data, color='insights') plt.title('Another visualization that tells a story')

Chart saved: storytelling_with_data.png

Machine Learning

>>> from sklearn.ensemble import RandomForestClassifier model = alexandre.train_model(data, target) print(f"Accuracy: {model.score(X_test, y_test):.2%}")

Accuracy: 94.7% - Model ready for production!

Version for Recruiters

Here's a clearer explanation of my technical skills:

Python - Programming Language

Advanced

Main language for data analysis, process automation and intelligent systems creation. Used daily for over 5 years.

Data Analysis Automation APIs

SQL - Database

Advanced

Language for querying and managing databases. Essential for extracting insights from large volumes of information.

Complex Queries Reports Business Intelligence

Pandas - Data Analysis

Expert

Python library for data manipulation and analysis. Transforms raw data into valuable business insights.

Data Cleaning Transformations Statistical Analysis

Docker - Containerization

Advanced

Technology that creates applications that work in any environment, facilitating deployments and team collaboration.

Application Deploy Isolated Environments DevOps

Power BI - Dashboards

Advanced

Microsoft tool for creating interactive dashboards and visual reports that facilitate executive decision-making.

Executive Dashboards KPIs Automated Reports

Git - Version Control

Advanced

System that controls code versions, enabling collaborative work and complete history of project changes.

Teamwork Change Control GitHub/GitLab

MongoDB - NoSQL Database

Advanced

Modern database that stores data flexibly, ideal for web applications and unstructured data analysis.

Unstructured Data Modern APIs Scalability

Apache Airflow - Automation

Advanced

Platform for orchestrating complex workflows, automating data processes that run at specific times.

Data Pipelines Task Automation ETL/ELT

Matplotlib - Visualizations

Advanced

Python library for creating custom charts and visualizations that communicate insights clearly and impactfully.

Custom Charts Presentations Data Storytelling

Machine Learning - AI

Advanced

Artificial Intelligence to create models that learn patterns in data and make automatic predictions.

Predictions Classification Predictive Models

Featured Projects

Solutions I developed to solve real problems

Data Scientists Guide

Complete guide for data scientists with methodologies, best practices and essential resources for professionals in the field.

Python Data Science Documentation

CSV Insights Tool

Interactive web tool for automatic analysis of CSV files, generating statistical insights and real-time visualizations.

JavaScript D3.js Data Visualization

Habits and Performance Analysis

Statistical analysis of correlation between personal habits and academic/professional performance using machine learning techniques.

Python Pandas Scikit-learn

Resume Optimizer

Intelligent system for resume optimization using natural language processing and job compatibility analysis.

NLP Python Text Analysis

Adventure Works - Executive Data Analysis

Interactive dashboard developed for financial analysis of Adventure Works bicycle company, with Machine Learning projections for 2022 and Brazilian market analysis.

Power BI Machine Learning SQL Business Intelligence

Learn Machine Learning Visually

Interactive educational platform for teaching machine learning concepts through dynamic visualizations and accessible practical examples.

JavaScript D3.js Educational Tech Interactive Learning

KPIs Governance Dashboard

Executive dashboard for data governance and strategic KPIs, featuring a modern lakehouse architecture and automated ETL/ELT pipeline for data-driven decisions.

Data Engineering Apache Airflow dbt Data Governance Business Intelligence

Data Engineer Case - DataOps MongoDB Python

Data Engineer Case - DataOps Pipeline

Complete data processing system with DataOps pipeline integrating Python and MongoDB, offering full support for local, remote and Docker environments with advanced functionality.

Python MongoDB Pandas Docker DataOps

Windows Event Log Analyzer

Advanced tool for analyzing Windows event logs with AI-powered insights. Features intelligent pattern recognition, security analysis, and automated reporting for system administrators.

JavaScript HTML5 CSS3 Google Gemini API AI Analysis

Hello, I'm Alexandre

Data Scientist

About Me

Technical Skills

Version for Recruiters

Python - Programming Language

SQL - Database

Pandas - Data Analysis

Docker - Containerization

Power BI - Dashboards

Git - Version Control

MongoDB - NoSQL Database

Apache Airflow - Automation

Matplotlib - Visualizations

Machine Learning - AI

Certifications

Featured Projects

Data Scientists Guide

CSV Insights Tool

Habits and Performance Analysis

Resume Optimizer

Adventure Works - Executive Data Analysis

Learn Machine Learning Visually

KPIs Governance Dashboard

Data Engineer Case - DataOps Pipeline

Windows Event Log Analyzer

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