Luciana Zeferino Portfolio

About Me

Hi there! I'm Luciana, a Data Analyst currently part of Thales (CDI) Data Governance team in France.

My journey in data analysis has been both challenging and rewarding, allowing me to develop strong skills in tools like Tableau, Power BI, SQL, and Python. I’ve had the opportunity to work on diverse projects that have sharpened my analytical abilities and fueled my passion for transforming complex data into actionable insights.

In addition to my technical skills, I am deeply committed to continuous learning and staying at the forefront of data analytics trends.

I invite you to explore my portfolio and reach out if you’d like to discuss potential collaborations or opportunities.

Skills

Data Visualization

Creating intuitive and interactive dashboards to present data insights effectively.

Statistical Analysis

Applying statistical techniques to interpret data and generate actionable insights

Data Wrangling and ETL

Extracting, cleaning, and transforming data from multiple sources to prepare it for analysis.

Database Management

Managing and optimizing databases to ensure organized, secure, and efficient data storage and access.

Data Governance

Implementing policies and procedures to maintain data integrity, security, and compliance across the organization.

Tools

SQL Python Power BI Tableau Tableau Prep Google Cloud MySQL SSMS SSIS Jira Confluence Excel GitHub AWS

HackerRank Profile

Education

MSc Machine Learning Engineer 12/2023 - 06/2025

Openclassrooms, Nice, FR

Focus on supervised and unsupervised learning, deep learning, model evaluation, data preprocessing, and the use of Python, NLP, computer vision, MLOps, and cloud platforms like AWS and Azure

MSc in Data Analytics 10/2022 - 12/2023

Data Science Tech Institute, Sophia Antipolis, FR

Work-study program focusing on key data analytics skills such as SQL for database querying, Python and R for statistical analysis, data visualization with Power BI and Excel, ETL processes, and CRM data management.

BSc in Data Analytics 10/2021 - 10/2022

Openclassrooms, Nice, FR

Project-based program, using real-world cases to develop practical skills. Projects include market analysis, counterfeit note detection, income prediction, and dashboard creation for business insights, emphasizing tools like Power BI, Excel, Python, R, and SQL.

Certifications

AWS Machine Learning Fundamentals

Udacity & AWS08/2024

PL-300 Power BI Data Analyst Associate

Microsoft Certification01/2024

AI Programming with Python

Udacity & AWS 09/2023

Data Analyst Professional Certificate

Coursera & Google 09/2021

Professional Experience

Data Analyst 05/2025 - Present

Thales, Gémenos, FR

As part of the Data Governance team, I work on improving the quality, integrity, and usability of Master Data through strategic projects focused on governance and analytics.

Analyzing business needs and translating them into data-driven solutions
Designing dynamic and interactive dashboards with Power BI
Optimizing data flows and transformation processes using SQL & Dataiku
Implementing quality control plans and governance policies
Supporting the evolution of the MDM Data Hub and developing GenAI-based assistance tools (OpenAI API)

Data Analyst 10/2022 - 05/2025

Vulog, Nice, FR

Vulog is a global leader in shared mobility technology, providing solutions for car-sharing, scooter-sharing, and other fleet management services.

Created dynamic dashboards in Tableau for B2B clients and internal teams, covering fleet performance, user behavior, marketing impact, geographic dynamics, revenue, and real-time operational metrics.
Built automated data preparation flows in Tableau Prep for data extraction and transformation, improving data accessibility for analysis.
Proactively explored data sources and tables, identifying and proposing KPIs and analyses aligned with business goals.
Documented analytical processes and created user guides detailing KPI calculations and dashboard utilization to provide transparent and actionable insights.

Portfolio

Welcome to my portfolio! Here, you'll find a collection of projects I've developed both during my studies and in my professional career, showcasing my ability to turn data into actionable insights