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David DiasDD

David Dias

Data Analyst — CRO | A/B Testing, GA4, GTM, JS

€200/day
2 projects
Madrid, ES
3-7 years

Average response time: 1 hour

About David

The Guy Who ❤️ Checkouts

Data Analyst / CRO Specialist with +4 yr experience in Digital Products.
My objective is remove stress and friction in purchase decisions and improve Checkouts and Booking Processes for companies, to boost up conversion rate and revenue.


Clients:



⚡️ Codere Apuestas
⚡️ Action Against Hunger
⚡️ British Council
⚡️ OCU (Euroconsumers)
⚡️ UrbanFisio (Funded by Lanzadera)
⚡️ Orange
⚡️ Roche
⚡️ The Good Goal
⚡️ Grapp Comics
⚡️ Freepik Company
⚡️ IKEA
⚡️ Buendía

Always obsessed with

⭐ Customer needs

⭐ Understanding human psychology in Digital Environments.


Interested in #ELearning, #EdTech, #Ecommerce, #Gaming and #Engagement mechanics.
  • English

    Fluent

  • Spanish

    Native or bilingual

Can work on-site
Madrid (up to 15km), Barcelona (up to 30km), Oviedo (up to 50km), Valencia (up to 50km), Málaga (up to 50km)

Experience

  • Sterling
    Founding Data Analyst
    April 2025 - Today (1 year and 4 months)
    A data boutique for startups, medium companies and VCs to improve their knowledge of their products.

    Tools:

    Bayesian Calculator: A A/B Testing Calculator using Bayesian Statistics.

    A Diff-in-Diff Tool: A tool to run Diff-in-Diff analysis.

    Batch S1Y25:
    - Cleverals (Increase lead generation through A/B Testing
    Tools: VWO, Google Tag Manager

    Batch S1Y26:
    - Buendía (Implement GTM-based tracking to gather data
    Run analysis using BigQuery and Python to create product hypothesis.


    Tools: GA4, Google Tag Manager, BigQuery, Looker Studio

    Currently, building MVPs to validate business models.
    Experimentation BigQuery Looker Studio Python (Programming Language) Google Analytics 4 (GA4)
  • TecData Engineering
    Senior Data Analyst, Product
    RESEARCH
    November 2024 - September 2025 (10 months)
    Madrid, Spain
    • Funnel Analysis y Path Analysis para la extracción de insights en los siguientes KPIs: User Acquisition, Retention, Performance. (Big Query, Python)
    • Visualizar los insights para los equipos de Producto y Business puedan consultar los datos de forma autónoma (Power BI)
    • Creación de tablas y automatizaciones en Google Cloud Platform
    • Modelado de datos en DBT y Git
    • Comunicar y compartir insights con Stakeholders



    Clientes: IKEA (Live at Home Platform)

    Google Play: Apple store link:

    Q4 2024:

    Alcanzar 80 compañías en el marketplace


    Q1 2025:

    Se añade transferencia bancaria (10% de las transferencias desde el lanzamiento)
    Flujo de cancelación y reagendar servicios desde la aplicación
    Mostrar reseñas de usuarios


    Q2 2025:

    Permitir visitas al hogar para mejorar los presupuestos
    Introducir pago fraccionado para mejorar la tasa de conversión
    Big Query Microsoft Power BI Google Analytics 4
  • Bluarrakis
    Data Analyst/Adobe Developer, Experimentation (Freelance)
    E-COMMERCE
    August 2024 - April 2025 (8 months)
    Madrid, Spain
    - Analizar el comportamiento web para identificar oportunidades de mejora en el proceso de compra y suscripción.
    - Preparar A/B Tests y otros experimentos para validar hipótesis y mejorar la tasa de conversión e ingresos.
    - Colaborar con los equipos de diseño, marketing y data para implementar las iniciativas.

    Cliente: NDA firmado

    Tools: ContentSquare, Adobe Customer Analytics, Adobe Target
    Adobe Analytics Adobe Target Conversion Rate Optimization A/B Testing Content Square

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Education

  • Grado en Economía
    Universidad Autonoma de Madrid
    2018

Certifications

Skill set

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