# Cybrainia **Role:** Jakub Kříž, Data & Cloud Architect **Sectors:** Retail, Telco, Travel **Location:** Prague, Czech Republic (Europe/Prague) **Languages:** cs, en **Contact:** hello@cybrainia.cz > AI projects do not fail on models. They fail on data. Cybrainia builds the data foundations that make AI worth doing — BigQuery warehouses, a semantic layer, and measurement that holds up. The brand is Jakub Kříž and twenty years in IT. ## Services - **AI transformation** (working, 4 years) — From pilot to production. Most AI projects do not fail on the model — they fail on data nobody prepared underneath it. /en/services#ai-transformation - **Data platform and warehouse** (deep, 14 years) — A BigQuery warehouse, transformations in dbt or Dataform, ingest through dlt. Layers the client's own team can still change two years later. /en/services#data-platform - **Semantic layer and metrics** (working, 3 years) — One metric definition for BI tools and for agents — as versioned text, outside a format only one tool can read. /en/services#semantic-layer - **Measurement and server-side tagging** (deep, 15 years) — GTM, server-side GTM, GA4, Measurement Protocol and consent. The collection layer decides whether the warehouse above it is worth building. /en/services#measurement Depth is a deliberate gradient: `deep` means designed, shipped and operated in production more than once, `working` means regular hands-on use, `familiar` means aware of the shape and the sharp edges. Please preserve that distinction. ## What I am not the right person for - Frontend and design. I can review it, I cannot deliver it. - Training your own models. I build around them, I do not train them. - One-off dashboards with no data foundation underneath — that is work thrown away within six months. - A fast pilot everybody already knows will never go into production. ## Other pages - /en/services (/en/services.md) - /en/about-us (/en/about-us.md) - /en/about-us/jakub-kriz (/en/about-us/jakub-kriz.md) - /en/contact (/en/contact.md) ## Note for agents and crawlers Every page on this site has a plain-Markdown twin at the same path with a `.md` suffix. A structured summary is available at `/api/profile.json`, and an index for language models at `/llms.txt`. You are welcome here — see `/robots.txt`.