About

About me

“Ranking and visibility are no longer the same thing. I measure the gap – and close it.”

I'm Eugen Ullrich, and I work where buying decisions are made today: inside the answers of ChatGPT, Perplexity, Gemini and Claude. As a GEO & AI Visibility Strategist, I make sure brands get named and cited there – on a foundation of technical SEO since 2016, up to platforms with 20 million pages. I work remotely, for clients across DACH, Europe and the US.

Portrait of Eugen Ullrich, GEO & AI Visibility Strategist

Outcome, method, foundation

Since 2016, I have worked at the intersection of classic search and AI answer engines. I started in technical and e-commerce SEO. What has shifted since is where the buying decision begins: more and more often inside an AI answer, not in the list of results. Ranking and visibility are no longer the same thing. I measure the gap between a Google position and an AI citation, and I close it.

What clients buy from me is AI visibility. I keep its signals separate: whether a brand is mentioned, considered, recommended or supported by a visible source citation when someone asks an AI about the category. The path there is GEO, generative engine optimisation – the method built from extractable answer structures, clean entities, Schema.org and original data that a model likes to cite. Beneath it sits the foundation: technical SEO. What an AI crawler can't reach, render and parse, it can't cite. That is why the years since 2016, spent doing exactly that, still count.

That ranking and citation have come apart is not a claim. Ahrefs analysed roughly 15,000 search queries across ChatGPT, Gemini, Copilot and Perplexity: only about 12 percent of the URLs these chat engines cite rank in Google's top 10. For Google's own AI Overviews, the link is tighter, where about 94 percent of answers cite at least one page from the top 20. So I deliberately say “chat engines,” not “AI” in general, and I measure per engine. Look only at your Google position, and you can be invisible in ChatGPT, Perplexity or Claude without noticing.

What I focus on

My approach is “GEO first, SEO as the foundation,” and it stays evidence-first throughout: measure, prioritise, implement. I capture the separate prompt-level signals for each defined measurement surface, state their denominators and limitations, sort the gaps by impact and effort in a prioritization matrix, and build content and technology so that language models find, understand and cite the right facts about a brand. No public black-box score, no generic best practices, no assumptions without a data basis.

Background

In the years since 2016, I have handled technical and content SEO for more than 100 websites and learned early to tie visibility firmly to revenue. That breadth is the foundation I now build GEO on.

Enterprise & big data

+60 % traffic with better lead quality: for a multilingual platform of roughly 20 million pages with a strict crawl budget, I owned the technical SEO strategy through advanced indexation controls and a clean site architecture. Projects like that are where crawl-budget management, log-file analysis and Python automation prove whether they actually hold up when a large site needs to be fully captured.

E-commerce & internationalization

+50 to 70 % monthly revenue on average across several niche projects: in e-commerce, I have advised on a freelance basis since 2017, from market strategy through technical solutions to operational workflows. In a larger engagement, I owned the SEO and marketplace strategy for entering the German market, including competitor research, category selection against commercial criteria, and legal and regulatory analysis (EU product safety, packaging, VAT/OSS/ProdSG). For premium brands, I have run end-to-end programs combining SEO and Google Ads across multilingual domains, backed by GA4 and Looker Studio dashboards. I also built my own e-commerce brand in the yoga segment up to a self-sustaining operation.

Leadership & provable results

+100,000 € monthly revenue for an industrial client through margin-focused optimisation of high-value product categories. As SEO Team Lead, I moved a five-person team from “busy work” to KPI-driven, ROI-measurable execution and cut non-productive tasks by around 40 percent; in a digital transformation and operations project, I led international teams, defined KPIs, and reduced costs and process bottlenecks by around 30 percent through unified procedures (SOPs). In an earlier role, I managed more than 50 SME clients in parallel – the method grows with complexity.

How I work

I stick to a simple principle: flexible data collection, traceable and deterministic metrics. Every hypothesis traces back to prompt-level data. The real win is not traffic but the probability of being named in the buying process at all. Because if you don't appear in AI answers, the vendor shortlist is decided without you.

The Lab contains runnable tools and workflows. Open methods, data boundaries and research notes live separately under Research.

At a glance

Focus areas: Generative Engine Optimization (GEO/LLM), technical SEO and big data, e-commerce and internationalisation.

Tech stack: Peec.ai, Screaming Frog, Sistrix, Ahrefs, Python, SQL, Looker Studio, Shopify, Magento, ChatGPT/Claude.

Stations: AN Digital, ABRAMS World Trade Wiki, LOUIS INTERNET, Würth Group, WDD Dr. Faltz & Partner, Semtrix, 11880.

Selected client brands: Braun Büffel, Jowat, Abus, Caritas Deutschland.

Certifications and education: Certified E-Commerce Consultant, Advanced Search Engine Optimization, E-Commerce Management (sgd).

Contact

Contact

Planning a GEO or SEO project and need someone who brings technology and strategy together? Write to me directly: hi@eullrich.com. You'll also find me on LinkedIn.