SEBASTIAN VIER
Madrid
Summary
Results-driven Senior Data Scientist with expertise in ETL development and data migration at ATM GRUPO MAGGIOLI. Strongly interested in giving decision makers insights into de data and driven by a detailed oriented development. Strong analytical skills complemented by effective communication.
Overview
3
3
years of professional experience
Work History
Senior Data Scientist
ATM GRUPO MAGGIOLI
02.2024 - Current
- I developed a clustering process to identify people, providing 60% more insight into the data to our supports team
- Contributed to the development of a migration process that improved efficiency by reducing processing time by up to 40x, utilizing Polars and Git
- Contributed to a complex data migration project involving over 40 tables, taking on the role of providing key information to the team to optimize workflow and decision-making processes.
Data Analyst
Cookdata
05.2022 - 02.2024
- Develop a Pareto Query in SQL using Window Functions to reduce waiting times in visualizations by 50%
- Design a data upload process to a Azure database to provide consultants with greater flexibility for customizing the data in Dashboards
- Develop data extractions software for REST APIs in REVO, Mercado Libre, and TSpoonLab using Pandas
Education
Bootcamp - Data Analyst
Ironhack
Berlin05-2022
Bachelor of Arts - Philosophy
Universidad De Navarra
Navarra, Spain06-2015
Skills
- ETL development
- Data modeling
- Data migration
- Scripting languages
- SQL expertise
- Data curating
Languages
Spanish
Bilingual or Proficient (C2)
English
Advanced (C1)
German
Intermediate (B1)
Timeline
Senior Data Scientist
ATM GRUPO MAGGIOLI
02.2024 - Current
Data Analyst
Cookdata
05.2022 - 02.2024
Bootcamp - Data Analyst
Ironhack
Bachelor of Arts - Philosophy
Universidad De Navarra
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