Hello World, I'm Yannis.

I set up, fix, and make sense of digital analytics for brands, so they can make better decisions with their data. I can also work alongside agencies across their client projects.

GA4, GTM, BigQuery, server-side tracking, and everything in between.

GA4 Google Tag Manager BigQuery Server-side Tracking Looker Studio Consent Mode

Get in touch Book a call

Based in London. Available remotely worldwide or on-site in London.

What I do

End-to-end analytics support, from strategy to insights.

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Measurement Strategy

I can build a measurement framework that gives you reliable metrics and helps you actually use them to inform business decisions.

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Tracking Setup

GA4, GTM, server-side tagging, consent mode, marketing pixels and any other type of tracking. I can help you set them up properly or fix existing issues.

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Ad Platform Tracking

Google Ads, Meta, LinkedIn, and any other marketing pixels. Accurate conversion tracking so you make the most out of your advertising budget.

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Data Analysis & Insights

Deep dives into your data to answer your business questions and provide actionable insights.

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BigQuery & Analytics Engineering

Export your data to BigQuery, organised in a scalable, cost-effective way. Bring in non-GA4 sources for a holistic view of your user journeys.

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Looker Studio & Reporting

Dashboards focused on the metrics your stakeholders care about.

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Cookie Consent & Compliance

Implementation of compliant cookie banners and consent mode.

What clients say

Trusted by brands and agency partners.

"I had the pleasure of working with Yannis on a critical project to rebuild the analytics foundation for iwocaPay, and he exceeded expectations at every stage. This wasn't a superficial clean-up — he rebuilt the foundation to ensure data accuracy, consistency, and long-term scalability. His recommendations were pragmatic, prioritised, and clearly tied to business impact. I would highly recommend Yannis."

Marion Bruniaux Head of Performance Marketing, iwocaPay

"Yannis has been our partner for Google Analytics and Google Tag Manager work since 2017. He has worked on everything from complex GA4 migrations to consent mode implementation and conversion tracking. He has always delivered reliably, communicated clearly, and flagged things we hadn't thought to ask about. I'd recommend him without hesitation."

Mike Barrett Founder & MD, Compound Partners

"Working with Yannis has been an absolute pleasure. His deep expertise in digital analytics — especially around Google Tag Manager and GA4 — makes him a true subject matter expert. I could always count on him to communicate clearly, stay on top of deadlines, and deliver exactly what he promised — often going above and beyond. Yannis is one of those rare people you can completely trust to get things done the right way. I’d work with him again in a heartbeat."

Ilia Markov Senior Growth Marketing Manager, Meilisearch

"I had the pleasure of working with Yannis on a six-month-long analytics project. He is very professional, extremely creative, responsible and he is willing to go the extra mile to satisfy the customer. I would definitely recommend him for any analytics-related project!"