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Roberto Arce

Roberto Arce

Data Scientist

42 | Paris


My Portfolio Highlights

My New Project

Dr. Semmelweis and the Discovery of Handwashing

My New Course

Introduction to Python

Data scientist, turning data chaos into organized knowledge.

My Work

Take a look at my latest work.


Data Manipulation with pandas


Introduction to Python


Intermediate Python

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

Sanofi | Jan 2023 - Present

Data Scientist

Working in the data team implementing a Bayesian regression for a media mix model to measure advertising effectiveness and provide insights for future budget allocation decisions. Stack: Amazon Web Services (AWS), Spark, Databrick, Python, Jupyter, Git.
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Stealth Startup | Jun 2022 - Dec 2022


Our company's foremost goal is to streamline access to Amazon's publicly available data for our clients. By implementing cutting-edge web scraping methodologies, developing resilient data pipelines, and performing rigorous testing on information sourced from Amazon's platforms and third-party sellers, we deliver indispensable insights to sellers, private equity firms, and talent scouts. Our diverse, global team thrives in a completely remote work setting, guaranteeing efficient communication and productivity throughout all time zones.

BRANDED | May 2021 - May 2022

Data Analyst/Scientist

Working as the main data contact for the Marketing pillar. • Design, ingest and monitor data pipes from each new seller API ensuring requirements are met. • Performed data modeling with DBT for the creation of a comprehensive data lake that serves as foundation for all data related matters on DTC. • Established and maintained evolving data requirements with business. • Co-established/challenged key performance metrics for operational efficiency. • Creation of automated data accuracy tests/analysis/reports/alerts. • Built, developed and maintained dashboards for DTC. • Created ad hoc analysis on historical data. Stack: SQL, GCP, DBT, Airflow, Gsheets, Tableau/G-studio, Gitlab, Python, Fivetran. Ticketing: Gitlab, Click-Up, Trello

BlaBlaCar | Mar 2019 - Nov 2019

Data Analyst

• Working as a full stack Data Analyst within the Financial, Strategy and Product team. • Working with product managers (analysis framework), developers (probes request) and Data engineers (tracking contract) to ensure that the data arrives on time and that the analysis is ready to perform, at the launch of new features. • Other Topics: Monetization, Product redesign, Search performance, Pricing strategy, Data merge with Ouibus.

Deezer | Jan 2018 - Mar 2019

Data Analyst - Americas

In continuity with past missions with a greater scope.

Deezer | Jan 2017 - Jan 2018

Data Analyst - Brazilian and Colombian Markets

The Job can be summarized in 4 aspects: • Insight researcher: With the objective to gain deep knowledge of the customer-app interaction. ➢ Improved general knowledge of the customers journey and insights by providing in-depth research on App usage and Customer journey. • Country Adviser: The objective is to measure and inform each country's actions performance, by providing feedback based on deep forensic insights, as well as proposing possible action plans. ➢ Worked with internal global teams and global partnerships (B2B): analyzing their performances on: offers usage, price rates and promotions; detection and correction of technical issues impacting our partnership customers base and thus the billing figure. • Data Developer and Controller: The objective is to create, update and sustain all databases and codes-scripts that support our current metrics. ➢ Supported, created and updated databases and code-scripts for the regular follow up of the KPIs’ and tableau visualizations workbooks. • Budget analyst/follower: The objective is to co-create the budget with the aid of the historic knowledge and to challenge the assumptions in the financial model presented by the financial team. ➢Provided relevant consolidated metrics for the planning and follow up of the marketing campaigns. ➢Weekly, monthly and after campaign performance follow up. Cross-team-topics: → Churn, conversion, lifetime cycle, customer value (B2B and B2C) and Business Budget. Softwares: Hadoop-hive, SAS, python (pandas), Tableau, SQL, Github and excel.

L'Oréal | Jul 2016 - Dec 2016

Digital Business Analyst / Financial Controller

Digital Project manager assistant at MaBeautéLuxe.fr Start-up with +200 K€ of turnover, 10 Luxury Brands and +600 products. • Followed site KPI and content analysis to optimize media and CRM strategy. • Monitoring the products performance, sources of traffic and email campaigns. Financial Controller: • Budget and forecast consolidation inside L'Oréal Digital (21 brands worldwide) with SAP magnitude tool, SAP BO and Compass. • Monitoring the gap analysis, margin rates and budgetary control.

oDesk | Sep 2014 - Sep 2015

Freelance Consultant

Different Excel VBA projects, mainly done at Odesk.com. Extreamly competitive enviroment, global competition for each project. Last project: DataBase consolidation and cleanning for the start up IAM sport

Shopshopdeco.com | Jun 2014 - Sep 2014

Supply Chain Analyst

Start-up furniture ecommerce company of 12 people, based on france, operations in DE, DK,ES, FR & UK. -Procurement -Client service (FR/ES/EN) -Provider contact, orders expediting and follow up -Logistics: expedition, exchange, warehousing follow up -Process improvement

Groupe SEB | Dec 2013 - Apr 2014

Supply Chain Project Manager


Groupe SEB | Jun 2013 - Dec 2013

Assistant Logistique International at Groupe SEB

Mission 1 - Supply Chain KPI follow-up • Propose new and review current KPI within the Corporate Logistics, based on the IT tool that is shared throughout the whole company Mission 2 - Diversity • Analyze the level of communality of portfolios between markets and address recommendations. Mission 3 - Item creation process • Reduce time to market lead-time for new item creation; Diagnosing the current situation with other Departments in order to reduce it.

MADEPA S.A. GRUPO LA PAPELERA | Sep 2010 - Jun 2011

Production Analyst

• Supported operations according to procedures and instructions • Maintained all safety rules in accordance with the company rules and policies • Maintained appropriate files for tracking batch and lot records • Coordinated and expedited work in the establishment, supporting over 120 operators • Assisted in day-to-day department operations • Assisted in the creation of the production master schedule • Gave worker orders, established priorities according to work order specifications and availability • Ensuring that the production is cost effective  Co-Created and established products specifications, procedures and standards  Increased overall communication lowering time outs

SYNERGY | Feb 2009 - Jul 2009

Sales Executive

Follows up on all prospects Conducts telephone inquiries. Assist customers with the right product for their needs

Walt Disney World | Aug 2007 - Jan 2008

Attraction Operator / Crowd Controller

• Worked in an international environment • Gave service to more than 35 000 guests on a weekly basis • Followed the Disney Basics while attending Disney University  Coordinated task in a multicultural team to meet Disney standards

My Education

Take a look at my formal education

42 | 2019
Master of Science - MS, Finance, GeneralGrenoble Ecole de Management | 2017
Master of Science - MS, Supply Chain and Purchasing ManagementMIP-Politecnico Di Milano | 2013
Bachelor of Engineering (B.Eng.), Industrial Engineering, Industrial EngineeringUniversidad Privada de Santa Cruz de la Sierra | 2010
Audencia Nantes Ecole de Management

About Me

Roberto Arce

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