# ombera GmbH > ombera is a Hamburg-based German consultancy specialising in KI-Sichtbarkeit (AI Visibility) and Generative Engine Optimization (GEO). Combining 25 years of digital transformation and e-commerce experience, ombera helps mid-sized B2B companies and brands become visible and citable in AI-powered search systems such as ChatGPT, Perplexity, Gemini, and Claude. The company was founded by York Fischer (also known as York Nikolas Fischer). It advises companies on how to build algorithmic authority so their brand, products, and expertise are surfaced when large language models answer customer queries. ## Key Facts - **Legal Name:** ombera GmbH - **Commercial Register:** Amtsgericht Hamburg, HRB 150662 - **Address:** Tibarg 31, 22459 Hamburg, Germany - **Markets Served:** DACH region (DE, AT, CH) - **Contact Email:** kontakt@ombera.de - **Contact Phone:** +49 179 799 7271 - **Core Strategy:** Transforming business substance into algorithmic relevance, emphasizing that organic authority beats pure advertising spend in the AI era. ## Team - **York Fischer** (Founder / Managing Director) - Strategy, e-commerce, company building, and M&A. Alumnus of Hamburg Media School. [Full profile](https://www.ombera.de/team/york.html) - **Leonie Offermann** (Content & Product) - Content strategy, SEO, and product thinking. [Full profile](https://www.ombera.de/team/leonie.html) - **Lisa Sevinç** (CFO & Tech Lead) - AI strategies, data & business intelligence, automation, and financial strategy. [Full profile](https://www.ombera.de/team/lisa.html) ## Services - **GEO Audit:** Structured diagnosis and analysis of current AI visibility, share of voice, and citation gaps. - **Content Architecture & LLM-Readiness:** Structuring corporate knowledge and semantic authority so LLMs can process and cite it confidently. - **Structured Data:** Advanced Schema.org / JSON-LD implementation for explicit entity grounding and AI indexing. - **Transformation & Consulting:** Pragmatic, hands-on implementation and internal enablement with clear KPIs rather than buzzwords. - **KI-Check:** Initial 30-minute strategic consultation (bookable via Google Calendar appointment schedules). ## Main Pages - [Homepage](https://www.ombera.de/): Overview of services, team, and testimonials. - [Wissen & Insights Hub](https://www.ombera.de/wissen/): Index of all strategic briefings and analyses on AI visibility, GEO, and risk management published by the ombera team. - [Services & Audits](https://www.ombera.de/#leistungen): Detailed breakdown of the GEO audit, strategy development, and transformation workflows. - [Team / About Us](https://www.ombera.de/#team): Background profiles and professional focuses of the consulting team. - [York Fischer - Profil](https://www.ombera.de/team/york.html): Detailed profile of York Fischer including professional history, academic background, publications, and triathlon record. - [Das Ende der Gratis-Marge](https://www.ombera.de/wissen/das-ende-der-gratis-marge.html): Executive Briefing by York Fischer on how the AI gatekeeper shift threatens organic traffic margins and what GEO means for risk management. - [Leonie Offermann - Profil](https://www.ombera.de/team/leonie.html): Detailed profile of Leonie Offermann including expertise in content strategy, SEO, GEO, and product thinking. - [Lisa Sevinç - Profil](https://www.ombera.de/team/lisa.html): Detailed profile of Lisa Sevinç including expertise in AI strategies, data & business intelligence, and financial strategy. - [Historical Context (Gatekeeper Shift)](https://www.ombera.de/#historie): Chronological analysis of digital gatekeepers (2000-2026), explaining why the shift to AI requires organic authority over pure ad spend. - [Client Testimonials](https://www.ombera.de/#cases): References from ASAMBEAUTY, 35up GmbH, and other clients on ombera's consulting work. - [Why Now?](https://www.ombera.de/#warum-jetzt): Urgency analysis on the closing window for organic AI authority before paid KI-ad formats dominate. - [FAQ Section](https://www.ombera.de/#faq): Direct answers regarding AI visibility measurement, differences between GEO and classic SEO, and corporate strategy. - [Contact & Strategy Call](https://www.ombera.de/#kontakt): Book a free 30-minute KI-Strategiegespräch via Google Calendar. - [Impressum](https://www.ombera.de/impressum.html): Legal notice with full corporate registration and contact details. - [Datenschutz](https://www.ombera.de/datenschutz.html): Privacy policy compliant with DSGVO / GDPR. ## External Verified Profiles - [LinkedIn Company Profile](https://www.linkedin.com/company/ombera): Official corporate presence. - [North Data Entry](https://www.northdata.de/ombera+GmbH,+Hamburg/HRB+150662): Commercial register data and corporate structure. - [Creditreform Entry](https://firmeneintrag.creditreform.de/22459/2151869706/OMBERA_GMBH): Credit rating and financial company data. - [York Fischer - Hamburg Media School](https://www.hamburgmediaschool.com/koepfe/fischer-york-nikolas): Founder profile at his alumnus institution. - [York Fischer - LinkedIn](https://www.linkedin.com/in/york-fischer/): Professional profile of the founder. - [Leonie Offermann - LinkedIn](https://www.linkedin.com/in/leonie-offermann-b87aa424a/): Professional profile of the Content & Product lead. - [Lisa Sevinç - LinkedIn](https://www.linkedin.com/in/lisa-sevinc/): Professional profile of the CFO & Tech Lead.