Available for new opportunities

Design meets
Analytics.

Hi, I'm Guillermo García — Digital Analytics Specialist & Designer. I bridge the gap between data strategy and creative vision to build experiences that are both measurable and beautiful.

GA4 · GTM · Data Strategy · UI Design · Branding

5+
Years in
Analytics
30+
Projects
Delivered
100%
Data-
Driven
Curiosity

About me

Data meets craft

Marketing and Digital Business graduate (Esic University) and Business Analytics graduate (European University) with experience in Digital Analytics Consultancy. I have worked with clients from various industries such as Bizum, Bankinter, Nebrija University, AXA, Oysho, and Airzone, delivering measurement solutions (data collection with GTM across Web and App), analysis (GA4 / BigQuery), and data visualization (dashboard creation using Looker Studio and Power BI).

From my perspective, data and its analysis begin with a solid measurement logic defined in the central analytics framework (the tagging guide), where it is essential to clearly determine what should be measured (events and parameters) with future analysis and visualization needs in mind.

Without a clear definition, both analysis and visualization may become superficial and lack the robustness required for data-driven decision-making.

My professional objective is to provide clients with reliable, scalable, and well-structured data that enables them to make decisions with a real business impact. That is why the tagging guide must be understandable to all stakeholders (analysts, business teams, and developers) to ensure proper and efficient implementation.

Analytics
Design
League of Legends
Padel
Guillermo García
Current focus
Digital Analytics
GA4 · GTM · Data Strategy

Work history

Where I've worked

Ayesa

Digital Analytics Engineer

Ayesa · Full-time · Hybrid · Madrid
Current Nov 2025 – Present
  • Implementation, governance, and data quality in digital Web and App environments — end-to-end measurement cycle from strategic definition to final validation.
  • Configuration of Google Analytics, Firebase, and Google Tag Manager ensuring accurate data collection aligned with business objectives.
  • Definition and creation of implementation guides and measurement plans — translating business requirements into scalable technical solutions.
  • Clients: Oysho, Lefties, Pelayo, AXA & Direct Seguros, Airzone, ISDIN
Google Tag ManagerGoogle AnalyticsFirebaseJavaScriptChrome DevToolsMeasurement Strategy
t2ó

Digital Analytics Consultant

t2ó · Full-time · Hybrid · Madrid
Oct 2024 – Oct 2025 · 1 yr
  • Technical implementation and data analysis across multiple clients: EVO/Bankinter, Línea Directa, Bizum, Nebrija University, Visalia
  • GA4 & GTM audits, measurement plans, full GA4 implementations, analytics incident support.
  • Dashboarding & BI (Looker Studio / Power BI) — data model planning, ETL via funnel.io, and BigQuery.
GA4GTMLooker StudioPower BIBigQueryfunnel.io
Incubeta

Digital Analytics Consultant

Incubeta · Full-time → Internship · Hybrid · Madrid
Mar 2024 – Oct 2024 · 8 mo
  • Part-time internship (Mar–Jul 2024) → Full-time role after completing Master's in Business Analytics (Jul–Oct 2024).
  • GA4, GTM, Looker Studio dashboards, debugging, exploratory Web Analytics analysis, Python & SQL (BigQuery).
  • End-to-end CMP implementation (Didomi) — platform config to GTM data collection. Clients: Prosegur, SGS, Victorinox, Telefónica
GA4GTMLooker StudioPythonSQLBigQueryDidomi CMP
Telefónica

Paid Social — Marketing Associate

Telefónica · Internship · Madrid
Oct 2021 – Mar 2022 · 6 mo
  • Customer Experience, Advertising & Multi-brand area — Communications Department (Media and Social Networks).
  • Campaign monitoring (KPIs), reporting, performance summaries. Collaboration with Havas media agency.
  • Paid Social campaign management: Facebook & Instagram (Business Manager), TikTok (TikTok Business Center).
Meta Business ManagerTikTok AdsCampaign ReportingPaid Social

Featured work

Selected projects

A curated selection across analytics and digital art.

All projects →
2019 — Now Personal

Digital Art

TNK Designs

Personal graphic design brand — cover art for underground artists, photo manipulations, illustrations, and creative multimedia content.

Instagram · YouTube · Twitter

PhotographyCover ArtIllustration
View project
TNK Logo
localhost:3000
TNK Design & Analytics
2025 Personal

Web Development

TNK Design & Analytics

This very website — 13 pages built entirely with Claude Code. Static HTML, Tailwind CSS, consistent design system. Zero lines hand-written.

13 pages · 0 lines hand-written · 100% AI

HTML5Tailwind CSSClaude Code
View project

Expertise

Skills & tools

Two distinct but complementary skill sets — data-driven thinking and visual craft.

Digital Analytics
Data strategy & measurement
Design
Visual craft & interaction

Also familiar with

Supermetricsfunnel.ioDidomiOneTrustAnalytics Debugger for AppsAdobe AnalyticsAdobe LaunchClaude Code

Tech Stack

Tools in orbit

Every tool in my stack — core analytics at the center, design and secondary tools in outer rings. Hover to pause.

GA4
GTM
Google Tag Manager
Looker Studio
Power BI
BigQuery
Figma
C
Canva
Procreate
Ps
Photoshop
Python
SM
Supermetrics
funnel.io
Did
Didomi
OneTrust
Adobe Analytics
TAGS
Adobe Launch
GAS
Google Apps Script
Claude Code

Writing

Latest posts

Thoughts on analytics, design, gaming and life on the padel court.

All posts →
Analytics 8 min read

Getting Started with GA4: What Every Digital Marketer Needs to Know

Universal Analytics is gone. GA4 is the new standard — but it's a fundamentally different product. Here's everything you need to understand.

Mar 1, 2024 Read →
Design 7 min read

Design Principles for Data Products: Making Dashboards People Actually Use

Most dashboards are never used after the first week. Here's the design framework I use to build data products that stick.

Feb 15, 2024 Read →
More posts coming soon

League of Legends ranked tips, padel strategy, and more analytics deep-dives.

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Let's work together

Ready to level up
your analytics?

Whether you need a robust tracking implementation, a data strategy overhaul, or a beautiful interface — let's talk.

Get in touch View projects →