Freelancer profile translated to English.

Description

Engineer specialized in data analysis (R, Python, PostgreSQL, and Power BI) and machine learning. I designed the first dashboards for a startup, analyzed the usage of collaborative tools with Power BI for a luxury brand, and improved the accuracy of an LLM-based tool by 8% for Petrobras. I enjoy using my data knowledge for positive impact causes through volunteer work like the Climate Fresk or Data For Good.

Languages

French
Native or bilingual
Portuguese
Native or bilingual
English
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 50km)

Wavestone
Digital Transformation Consultant
CONSULTING AND AUDITS
February 2025 - July 2025 (5 months)
Puteaux, France
Strategic deployment of No/Low Code tools in a luxury house (Revenue > €17 billion) and support for continuous governance improvement:
• Analysis of performance data of the old intranet with Power BI to guide the launch strategy
• Training of over 60 international employees on No/Low Code tools (Power BI, Power Apps, Power Automate, Copilot Studio)
Petrobras
AI Engineer
ENERGY AND UTILITIES
January 2024 - December 2024 (11 months)
São Paulo, Brazil
8% improvement in the accuracy of an internal LLM chatbot (Petrobras, Revenue > €4.7 billion):
● Synthetic data generator (numerical regex, textual GPT-4o mini) to enrich the training base
● Intelligent summarization tool (segmentation, embeddings, scoring, filtering) to optimize input processing and overcome token limits
LLMs RAG Python Langchain Elasticsearch
Educacode
Data Scientist
EDUCATION AND E-LEARNING
June 2023 - August 2023 (2 months)
La Rochelle, France
Creation of dashboards in a startup digitizing driving school training:
• First data scientist in the company: creation and structuring of databases and analytical flows with UML, PostgreSQL
• Predictive modeling of success rates on a 2-year data history using R and Python (Scikit-learn, Pandas)
• Analysis of 200+ profiles via process mining (PM4py), revealing key insights that challenged the pedagogical strategy

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Ingénierie informatique et intelligence artificielle
Escola Politécnica da Universidade de São Paulo
2025
Douple diplôme avec l'université de São Paulo M2 : Ingénierie informatique avec spécialisation en intelligence artificielle
Ingénierie data science
Grenoble INP - Ensimag, UGA
2025
L3 : Tronc commun M1 - M2 : Modélisation Mathématiques, Image et Simulation (MMIS)

Data Scientist

Angela Colas

Data Scientist

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