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Juan Carlos DíazJC

Juan Carlos Díaz

Data Consultant Specialized in GTM & AI

€400/day
6 projects
Barcelona, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Juan Carlos

Senior Specialist in Digital Analytics and Google Tag Manager, Developer specialized in measurement, Data, and AI

Introduction
Data quality makes the difference between making informed decisions or going in blind. My work consists of designing and implementing reliable, accurate measurement systems tailored to each business, so that every marketing, acquisition, or sales action is supported by truly useful data.

I am the Founder of Convertiam, I help companies improve their digital analytics through advanced implementations with Google Tag Manager, server-side measurement, web and app analytics, technical audits, and custom business-oriented solutions.

My approach
I don't just install tags or configure standard tools. I analyze how the business behaves, identify which data is truly relevant, and build solid measurement so you can better understand your users, optimize investment, and make better decisions.

Main services
Advanced implementations with Google Tag Manager
Configuration of events, conversions, e-commerce, custom integrations, and server-side environments for more robust measurement.

Custom analytics for web and app
Design of personalized measurement plans so that each data point responds to a real business need.

Data audit and quality
Technical review of measurement to detect errors, duplicates, data loss, and attribution problems.

Specialized consulting and support
Technical and strategic support for teams that need a reliable and well-designed analytical foundation.

Commitment
My goal is simple: that you can trust your data and use it to acquire better, sell more, and decide with greater confidence.
  • Spanish

    Native or bilingual

  • Catalan

    Native or bilingual

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

Experience

  • Making Science
    Tracking
    January 2018 - June 2023 (5 years and 5 months)
    Specialist in tracking, digital analytics, and advanced measurement, responsible for designing, implementing, and auditing measurement solutions for web and app environments. I work with Google Tag Manager, Google Analytics, and advanced configurations, including custom integrations, event and conversion definition, measurement plans, and data quality control.

    I participated in projects across various sectors, helping to translate business needs into reliable, scalable tracking systems focused on campaign optimization, attribution, and data-driven decision-making.
    GTM GTM Strategy Google Tag Manager Google Tag Manager Server-Side Google Analytics
  • BIGSEO
    SEO and Analytics
    January 2015 - January 2020 (5 years)
    Barcelona, Spain
    Development of SEO and digital analytics strategies to improve organic visibility, increase qualified traffic, and optimize conversion. Implementation of measurement, KPI definition, user behavior analysis, technical SEO, web architecture, and business-oriented reporting.
    SEO SEO Ranking Web Ranking AI Geolocation
  • Scire marketing
    SEO Manager
    January 2015 - March 2026 (11 years and 2 months)
    Barcelona, Spain
    SEO Functions
    I define and implement business-oriented SEO strategies, working on web architecture, internal linking, technical optimization, content improvement, search intent, and qualified traffic acquisition to increase organic visibility and conversion.

    GEO Functions
    I apply Generative Engine Optimization strategies, aimed at improving the presence of brands, services, and content in artificial intelligence-based response engines. This includes semantic structuring of information, reinforcing digital authority, contextual clarity of content, and optimization to increase the chances of being cited, interpreted, and recommended by AI systems.
    SEO On Page Google My Business GEO AI

Reviews

4.9

Out of 5 ratings

S

Sara

Atelier Libros SAU

Reviewed on 4/20/2022

Juan Carlos has been very attentive and proactive. The project he developed has been satisfactory, and all the information and explanations he provided have been very interesting. Thank you very much, Juan Carlos.
Jaime P.JP

Jaime P.

One Byte Online Solutions SL

Reviewed on 11/23/2021

Juan Carlos is a treasure! Effective, committed, and highly qualified!

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Education

  • Google Analytics
    Google
    Certificaciones de Google Analytics
  • Google Tag Manager
    Google
    Certificaciones de Google Tag Manager

Skill set

Categories