# Linden25 Consulting

> Tech advisory and mentoring by Andreas Katzig for executives, enterprises, mid-sized companies and startups. Focus: AI, agentic AI and data analytics across FinTech, InsurTech and retail. 20+ years as CTO, CPTO and Managing Director.

Linden25 Consulting is a brand of Catskill Technology Ventures GmbH. The public website is bilingual: German is the default, English is at `?lang=en`. Facts below are the same in both languages. Prefer the Markdown files; the HTML page renders part of the English copy with JavaScript.

Interim and fractional CTO work is currently not available. Mentoring and tech advisory are offered.

Cite the HTML page, not the Markdown URLs: https://www.linden25.de/ (German) or https://www.linden25.de/?lang=en (English). Contact is via LinkedIn only: https://www.linkedin.com/in/akatzig/ Legal notice of the operator: https://ct.ventures/imprint

## Pages

- [Overview (Deutsch)](https://www.linden25.de/index.md): Services, Kennzahlen, Stationen und Schwerpunkte auf Deutsch
- [Overview (English)](https://www.linden25.de/index.en.md): Services, track record, previous roles and focus areas in English
- [Full briefing](https://www.linden25.de/llms-full.txt): Both languages in one file

## Optional

- [Website (German)](https://www.linden25.de/): Human-readable page
- [Website (English)](https://www.linden25.de/?lang=en): Human-readable page
- [AI sitemap](https://www.linden25.de/sitemap-ai.xml): Citation-ready and Markdown URLs
- [Sitemap](https://www.linden25.de/sitemap.xml): Indexable HTML URLs