Johann Keller
AI Content Architect · Berlin
German specialist crafting multilingual AI-generated content for enterprise brands. Blends prompt engineering, vector search, and synthetic data pipelines to deliver consistent tone and factuality.
Generative AI
Multilingual
RAG Systems
Last updated: 09 Dec 2025
Capabilities
- End-to-end AI content production for German/English campaigns, with human QA checkpoints.
- Custom prompt stacks for long-form articles, product copy, and thought leadership.
- RAG architectures with curated embeddings to keep outputs grounded in verified sources.
- Automated A/B testing loops and scoring for style, compliance, and SEO signals.
Recent Work
- Scaled multilingual catalog descriptions (60k SKUs) with style-guided prompts and brand tone filters.
- Built LLM-driven newsroom assistant for daily briefs, bias checks, and citation enforcement.
- Launched synthetic data generator to balance domain coverage for a financial Q&A bot.