# Linden25 Consulting

Canonical URL: https://www.linden25.de/?lang=en
Language: English
German: https://www.linden25.de/index.md

Tech advisory and mentoring for executives, enterprises, mid-sized companies and startups.

Andreas Katzig – 20+ years as CTO, CPTO and Managing Director. Focus: AI, agentic AI and data analytics across FinTech, InsurTech and retail.

Contact: https://www.linkedin.com/in/akatzig/

## Services

### Mentoring

Individual 1:1 mentoring for executives, CTOs and decision-makers: broaden your perspective, de-risk decisions, gain confidence.

- Executive & leadership mentoring
- CTO sparring
- Role & career development

### Tech Advisory

The right decisions on AI, data, architecture and development processes – well-founded and fast.

- AI, agentic AI & data analytics
- Technology & product strategy
- Architecture & cloud
- Tech audits & due diligence

### Interim & Fractional CTO

Currently not available.

Hands-on technology leadership for a defined period: building, transforming and stabilising product and tech organisations.

- CTO / CPTO for a defined period
- Organisation building
- Regulated environments

## Track record in numbers

- 20+ years in technology and product leadership
- 30+ products developed and launched
- 10+ companies advised and scaled – from 10 to 200 and from 100 down to 10 employees
- 100M+ users reached worldwide
- €100M+ in funding supported
- −50% infrastructure costs reduced while improving scalability

## Previous roles

- anybill — Chief Product & Technology Officer
- XPAY — Group CTO
- ottonova — Group CTO & Managing Director
- Chimera Entertainment — CTO & Technical Director
- Antler — Entrepreneur in Residence

## Focus areas

- AI, LLM & agentic AI
- Data analytics & data governance
- FinTech, InsurTech & retail
- Regulated environments: BaFin, VAIT, GDPR
- AWS, Azure, GCP
- Enterprise architecture
- ISMS & security
- OKRs & agile operating models
- M&A tech due diligence

## Legal notice

Linden25 Consulting is a brand of Catskill Technology Ventures GmbH. This website is provided and operated by Catskill Technology Ventures GmbH. The full provider information pursuant to § 5 DDG (German Digital Services Act) is in the legal notice of Catskill Technology Ventures GmbH: https://ct.ventures/imprint