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Juan Fernando Sánchez MartínezJF

Juan Fernando Sánchez Martínez

Data & Analytics Trainer

€400/day
2 projects
Albacete, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Juan Fernando

My professional journey has been guided by a constant passion for data analysis. From my early years as a researcher to my current role as a trainer, each stage has been an opportunity to learn, grow, and share knowledge.

🔍 Researcher (4 years)
During this period, I was part of international teams in Italy and Belgium, where I conducted collaborative research. Subsequently, I participated in a project funded by European funds at the Chair of Agricultural Chemistry of the UCLM. During this time, I combined my research with my doctorate, which resulted in several scientific publications as a co-author.

🌍 Consultant (2+ years)
In my next role as a consultant, I focused on international market analysis to optimize promotion and export in the wine sector. This role allowed me to apply my analytical skills to help companies expand globally.

📊 Data & Analytics Trainer (3+ years)
In my current role, my main objective is to equip professionals in the sector with the necessary skills for data manipulation and analysis in the business environment. I am part of Telefónica's Data University project, where I train professionals from the BBVA Group, and I am also an external master's professor in SQL Databases and BI with Tableau at the Complutense University of Madrid.

🧠 Constantly learning and adapting
My insatiable curiosity and continuous search for the best methodologies and tools allow me to stay at the forefront of the data analysis world, always prepared to face new challenges and opportunities.
  • Spanish

    Native or bilingual

  • English

    Fluent

  • Italian

    Conversational

Can work on-site
Albacete (up to 50km)

Experience

  • ArcelorMittal
    Trainee (Research Internship)
    RESEARCH
    October 2012 - April 2013 (6 months)
    Gante, Belgium
    Trainee developing a project on accelerated corrosion of steel coated with different coatings and characterization of corrosion products. Sample preparation, testing, SEM microscopy characterization, and results presentation using visualization tools.
    Research Data visualisation SQL
  • University of Rome "La Sapienza"
    Thesis Student (Research Internship)
    CHEMICAL
    February 2012 - July 2012 (5 months)
    Roma, Italy
    Thesis student developing a project on fluoride and vanadium removal for water potabilization using adsorbent materials and nanomaterials. Jar Test execution and HPLC chromatography characterization for research publication.
    Research SQL Data visualisation
  • Universidad de Castilla-La Mancha
    Researcher
    CHEMICAL
    February 2016 - January 2018 (1 year and 11 months)
    Albacete, Spain
    During this period, I was part of international teams in Italy and Belgium, where I conducted collaborative research. I participated in a project funded by European funds. During this time, I combined it with my doctorate, which resulted in several co-authored scientific publications in high-impact journals.
    Research Data visualisation SQL

Reviews

5.0

Out of 1 rating

N

Natalia

Formador Tableau - Telefónica Tech IoT & Big Data

Reviewed on 12/15/2025

Juanfer has led both material creation and delivery with absolute independence and more than satisfactory solvency. Juanfer's attitude, flexibility, and knowledge have led the client to request his services specifically for the third consecutive year. Unbeatable work!

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Education

  • ENGLISH C1.1 MICROSOFT EXCEL 2013 APPLIED TO WORK WITH CHARTS, DATA, AND FORMULAS. BASIC LEVEL Microstrategy Desktop Craft Beer
    INGLÉS C1.1 MICROSOFT EXCEL 2013 APLICADO A TRABAJO CON GRÁFICOS, DATOS Y FÓRMULAS. NIVEL BÁSICO Microstrategy Dektop Cerveza Artesanal
  • Master of Education
    UNIR - The Online University
    2021

Certifications

Skill set

Categories