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Jonathan CastilloJC

Jonathan Castillo

Web Analytics Engineer | Google Expert

€400/day
Lisbon, PT
3-7 years

Average response time: 1 hour

About Jonathan

I transform data into strategic insights for brands and agencies. As a Digital Analytics Manager with four years of experience, I specialize in AI-driven analytics and privacy-focused data collection. My expertise spans across developing advanced tracking mechanisms, including server-side measurement and predictive analytics, enabling businesses to make informed decisions. I have successfully worked with various teams to create actionable solutions that enhance performance and drive growth. If you're looking for someone who can navigate the complexities of digital analytics and provide clarity through data, I am ready to collaborate. Let's discuss how I can help elevate your data strategy and achieve your business objectives.
  • Spanish

    Native or bilingual

  • English

    Fluent

  • Portuguese

    Fluent

Remote only
Primarily works remotely

Experience

  • SIXT
    Tracking Engineer | Data Governance Specialist
    TECH
    April 2026 - Today (4 months)
    Part of the Online Data Engineering & Tracking (ODET) team — SIXT's central engineering unit responsible for the integrity, architecture, and governance of digital tracking across all web and app products globally. The team owns the full Google Stack, the user behaviour events pipeline, and the data infrastructure that connects front-end instrumentation to the datalake.

    Tech Stack: GA4, Google Tag Manager (client & server-side), Google Cloud, BigQuery, Apache NiFi, AVO, AWS S3, GitHub, UserCentrics, etc.
  • Euroconsumers | Deco Proteste
    Digital Analytics Manager
    DIGITAL AND IT
    March 2024 - April 2026 (2 years and 1 month)
    Lisbon, Portugal
    As a Digital Analytics Manager at Euroconsumers | Deco Proteste I was responsible for managing, operating and scaling the digital analytics ecosystem across the web, app and cloud environments. In addition, I led a taskforce of digital experts by providing strategic guidance while acting as a bridge between Business/Product, Marketing and Engineering teams, translating their needs into actionable solutions.

    The role combined hands-on execution with strategic ownership, being responsible for delivering a robust, compliant and future-proof tracking schema throughout EC's digital channels, including:

    - Governance over the Google Stack, including both Marketing and Cloud Platforms.

    - Management, setup and integration of Analytics and Advertising platforms such as Google Analytics, Google Ads, Meta Ads, Firebase, Search Console and BigQuery.

    - Technical implementation of tags, pixels and server-side architecture in Google Tag Manager with strong focus on Performance and GDPR compliance.

    - Advanced, automated and user-friendly reporting in Data Studio (Looker) integrating multiple data sources.

    - Redaction of technical documentation for scalation across multidisciplinary teams.
    Google Tag Manager Google Analytics Web analytics Looker Studio Google cloud
  • SIVA | PHS
    Paid Media & Analytics Manager
    AUTOMOBILE
    January 2023 - March 2024 (1 year and 2 months)
    Lisbon, Portugal
    As a Paid Media & Analytics Manager at SIVA | PHS, I was responsible for managing, end-to-end, the digital campaigns of the VAG brands in Portugal: from the elaboration of briefings to the validation of the media plans, performance analysis and reporting. In addition, I was responsible for the governance of the web analytics stack at the local level, including:

    - Management, setup and integration of Analytics and Advertising platforms such as Google Analytics, Google Ads and Meta Ads.

    - Basic implementation of marketing pixels in Google Tag Manager - including Consent Mode V2.

    - User-friendly and automated reporting in Looker Studio, integrating multiple data sources.

    Platforms: Google Analytics, Google Tag Manager, Power BI, Looker Studio, Google Ads, Facebook Ads.
    Google Tag Manager Google Analytics Web analytics Advertising Looker Studio

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Education

  • WEB FRONT-END DEVELOPMENT Postgraduate degree.
    IADE
    2025
    WEB FRONT-END DEVELOPMENT Postgraduate degree.
  • Master's degree.
    UNIR
    2022
    Master's degree.

Certifications

  • Onetrust Consent Expert
    Onetrust
    2024
  • Google Analytics 4
    Google
    2024

Skill set

Categories